Answer:
Extremophilic microbes
Explanation:
The Most Extreme Creatures Extremophilic microbes are a wild bunch. They can be found thriving in some of the most hostile environments imaginable - swimming in near-boiling water, eating rocks, lounging in sub-zero temperatures, and hanging out where radiation levels rival nuclear reactors.
the dna with the gene of interest for a cloning experiment was left on the lab bench overnight (instead of storing it in the freezer). as a result, it was degraded. they didn't know the dna was left out and used it in the experiment. the plasmid, however, was stored correctly. the vector contains a gene for ampicillin resistance. after the transformation procedure, the bacteria were plated on media containing ampicillin. what results are expected from this faulty molecular cloning experiment?
In a molecular cloning procedure, the DNA to be copied is extracted from a target organism and split into smaller DNA fragments in a test tube using enzymes.
These pieces are subsequently joined with vector DNA to produce recombinant DNA molecules. After that, a host organism is given the recombinant DNA (typically an easy-to-grow,strain of E. coli bacteria). Recombinant DNA molecules will be duplicated alongside the host DNA in the resulting population of organisms. These are transgenic or genetically modified organisms because they have foreign DNA pieces. Thus, the term "clone" is frequently used to describe both the bacterial population and the recombinant DNA molecule. In actuality, molecular cloning refers to the scientific techniques utilised to put them together.The idea arose that different DNA sequences could be inserted into a plasmid and that these foreign sequences would be carried into bacteria and digested as part of the plasmid. That is, these plasmids could serve as cloning vectors to carry genes.
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how many of these mutations are conservative, in the sense that an arg codon is changed to a functionally similar lys codon? express your answer as an integer.
Three nucleotide bases called codons are used to encode an amino acid or signal at the start or finish of protein production. An amino acid is represented in the genetic code by 3 nucleotides, whereas there are only 4 bases.
Proteins are constructed from a set of 20 amino acids in a variety of configurations. For every four nucleotides and 20 amino acids, there are 64 potential codon configurations, provided that at least three bases are present.
Given the genetic code's degeneracy, numerous codons encoding the same amino acid are not required because the genetic code carries more information. As there are three base pairs each codon and three DNA base pairs every base pair, there are nine potential substitutions for each DNA base pair.
for arginine, including 6 codons 6×9= 54
∴ There could be 54 mutations for the 6 arginine codons.
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Limestone forms as ocean water evaporates and leaves calcium carbonate behind, which is then deposited on the ocean floor. what type of rock can be formed in this way?
Limestone is an example of sedimentary rock. It forms when ocean water evaporates and leaves calcium carbonate behind.
One of the most prevalent categories of chemical rocks is limestone. When calcium and bicarbonate ions erode from the remains of shells, coral, crustaceans, and mollusks in the water, they form limestone. These structures are gradually broken down by wave action into calcite and other calcium carbonate-based minerals, which build up in the ocean's water. These solutes can precipitate to form sediments rich in calcium carbonate as they are transported from the deep ocean environment to shallow areas like lagoons and tidal pools. For instance, calcium carbonate can precipitate in lagoons to form ooids, which are spherical nodules that cling together to form oolitic limestone, or limestone that has the shape of an egg.
Hence, limestone is forms link between living and non living.
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Select the correct answer from each drop-down menu. the planets that reside in the region of the solar system are jupiter, , uranus, and neptune. although these planets are made up of lighter elements, they have a solid core. the atmosphere of all these planets is made up of hydrogen and . in addition to these two elements, the planets neptune and contain methane.
The correct answer from the drop-down menu is (a) the planets that reside in the region of the solar system are Jupiter, Uranus, and Neptune.
Jupiter, Saturn, Uranus, and Neptune are the planets that are found in the solar system's outermost zone. They have a strong core despite the lighter components that make up these planets. Hydrogen and helium make up the planets' atmospheres in all cases. The planets Neptune and Uranus also have methane in them in addition to these two elements.
Uranus and Neptune share a lot in common. It has a solid center the size of Earth covered in a dense fog of water, ammonia, and methane. Hydrogen and helium, together with a small amount of methane, make up the majority of these elements' atmospheres.
The methane in Uranus' upper atmosphere absorbs the Sun's red light while reflecting its blue light back into space.
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The planets that reside in the outer region of the solar system are Jupiter, Saturn, Uranus, and Neptune. Although these planets are made up of lighter elements, they have a solid core. The atmosphere of all these planets is made up of hydrogen and helium. In addition to these two elements, the planets Neptune and Jupiter contain methane.
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How many water molecules would be needed to break apart a carbohydrate made of 27 glucose monomers? Explain
Carbohydrates are made up of monosaccharides, which are simple sugars such as glucose. When two or more monosaccharides are joined together, they form a disaccharide or a polysaccharide. Polysaccharides are long chains of monosaccharides that are joined together by glycosidic bonds.
In order to break apart a carbohydrate made of 27 glucose monomers, you would need to hydrolyze the glycosidic bonds that hold the monomers together. Hydrolysis is the process of breaking a chemical bond by adding water molecules. For each glycosidic bond that you want to break, you would need to add one water molecule.
Since a carbohydrate made of 27 glucose monomers would have 26 glycosidic bonds (one less than the number of monomers), you would need to add 26 water molecules to break it apart. This is because each water molecule would be used to hydrolyze one of the 26 glycosidic bonds in the carbohydrate.
It's worth noting that the number of water molecules needed to break apart a carbohydrate would depend on the length of the carbohydrate and the type of glycosidic bonds it contains. For example, a carbohydrate with more monomers or with different types of glycosidic bonds might require more water molecules to be hydrolyzed.
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in of mice and men, george and lennie share a special relationship. what motif do these characters fit into?
Loneliness, dream ranch, the river setting ,animal imagery motif fits into these characters in of mice and men, george and lennie sharing a special relationship
George and Lennie have a unique friendship in of mice and men. These individuals meet the themes of animal imagery, the river location, the dream ranch, and loneliness. In the novella Of Mice and Men, loneliness plays a significant role in the life of a migratory labourer. In Of Mice and Men, the reader can observe various characters who are impacted by loneliness. After losing his loyal buddy, his dog, Candy is left alone. Because he is a black man living in a segregated 1930s society, Crooks is lonely. Since she is the only female on the ranch and has no company, Curley's wife is lonely. Even though George and Lennie are homeless and have little money,they are optimistic.
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outline an optimal treatment plan for julie and explain your reasoning. discuss the tradeoff s encountered during the composition of your plan (consider alternative drug targets and a bone marrow transplant).
The primary medication used to treat CML is a drug named imatinib. It is typically administered quickly after a cancer diagnosis in order to decrease the disease's course and keep it from progressing to an advanced stage.
Reduced formation of aberrant white blood cells is how imatinib functions.
BMT, commonly referred to as a bone marrow transplant as well as hematopoietic stem cell transplant could treat AML for patients of any age. It swaps out harmful stem cells with good blood-forming ones. Many people's diseases can be cured through transplants.
A bone marrow, meaning stem cell, transplant is such kind of therapy for CML where the patient receives transplanted bone marrow from a donor. The first and only recognized treatment that can completely cure CML would be an allogeneic transplant.
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Drag the terms to the correct boxes to complete this infographic on the general parts of the eukaryotic cell. Cell Wall External Chromosomes Internal Mitochondria Cytoskeleton Glycocalyx Cilia Ribosomes Boundary EUKARYOTIC CELL Cytoplo membrane Append Nu Homebound Olle Endoplasmi reculum Coleratu Flagella Nuclear envelope Muide Mikrotubules Intermediate laments Actin laments chlo
A nucleus and other membrane-bound organelles are found in the cells of eukaryotes, which are creatures.
What are eukaryotic cells?A nucleus and other membrane-bound organelles are found in the cells of eukaryotes, which are creatures. All mammals, plants, fungi, protists, and the majority of algae are eukaryotic creatures, as are many other types of life. Single cells or many cells can make up eukaryotes.
Eukaryotic cells are comprised of 3 major compartments. There are two different kinds of glycocalyx and appendages in the exterior compartment.The boundary can consist of a cell membrane and possibly a cell wall as well. The internal compartment is comprised of the cytoplasm, the nucleus, cytoskeletal components, and other organelles, such as mitochondria and ribosomes.To learn more about Eukaryotic cells refer to:
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here is a portion of a hypothetical dna sequence: 3' t t c g a a c c g a g 5' suppose this sequence is part of the template strand of a gene. the sequence of the rna transcript produced from this part of the gene would be:
Answer:
sequence of the RNA transcript produced from this part of the gene would be:
5' A A G C U U G G C U C 3'
Explanation:
The RNA transcript is produced by transcribing the DNA sequence into RNA using the enzyme RNA polymerase. During transcription, RNA polymerase reads the DNA sequence and uses it as a template to synthesize the complementary RNA sequence. Because RNA is single-stranded and DNA is double-stranded, the RNA transcript is complementary to the non-template strand of the DNA, not the template strand.
In the given DNA sequence, the non-template strand would be:
3' A A C G T T G G C T G 5'
The RNA transcript is produced by transcribing this non-template strand, so the resulting RNA sequence would be the complementary sequence:
5' A A G C U U G G C U C 3'
This RNA transcript would be the sequence of the RNA produced from the given DNA sequence.
Why do the cells in all living things need energy?
Responses
Answer:
All living cells need energy to carry out their basic functions, such as growth, reproduction, and maintenance. This energy is necessary for cells to maintain their structural integrity, to synthesize new molecules, and to perform the many other processes that are essential for life. Without a constant supply of energy, cells would not be able to carry out these functions and would quickly die.
modern humans have: a. large browridges, large nasal sinuses, and a large masticatory complex. b. a high vertical forehead, a round and tall skull, and small browridges. c. a small face, small teeth, and a projecting chin. d. both b. and c.
Modern humans have traits a high vertical forehead, a round and tall skull, and small browridges
The lighter skeletons of modern humans can be used to identify them anatomically from ancient humans. Modern humans have extraordinarily large brains, which vary in size from population to population and between males and females. The average size of these brains is approximately 1300 cubic centimetres.
Many of the physical and behavioural traits that modern humans have evolved share some similarities with other early human species, though not to the same extent. Modern humans were able to connect with their environment and one another in novel and unusual ways thanks to their complex minds. Our predecessors were better able to survive as the environment got more unpredictable thanks to larger brains.
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1. as you travel up through the atmosphere it gets colder and colder the rate at which it gets colder is called the _______ rate and it is about ____ c per km of altitude
2. the less atmosphere over our heads, the _________ the lower the atmospheric pressure
3 the atmosphere weighs_______ kg per cubic centimeter
the atmosphere keeps the earth warm when light from the sun is reflected back from the earth as heat and trapped in the atmosphere it is called the _________
3. __________ smog occurs when sunlight reacts with chemicals from car exhaust
4. when coal is burned to make electricity it produces sulfur when the sulfur combines with rain to make sulfuric acids it is called _________
As you travel up through the atmosphere it gets colder and colder the rate at which it gets colder is called the "lapse rate" and it is about 6.5°C per km of altitude.
2. The less atmosphere over our heads, the "thinner" the lower the atmospheric pressure.
3. The atmosphere weighs about 1.2 kg per cubic centimeter. The atmosphere keeps the earth warm when light from the sun is reflected back from the earth as heat and trapped in the atmosphere it is called the "greenhouse effect."
3. "Photochemical smog" occurs when sunlight reacts with chemicals from car exhaust.
4. When coal is burned to make electricity it produces sulfur. When the sulfur combines with rain to make sulfuric acids it is called "acid rain."
What is lapse rate?The lapse rate is the rate at which the temperature of the atmosphere decreases with an increase in altitude. It is usually expressed in degrees Celsius per kilometer of altitude.
The lapse rate is important because it determines how the temperature of the atmosphere changes with altitude, which in turn affects the formation of clouds and precipitation. The average lapse rate in the Earth's lower atmosphere is about 6.5°C per kilometer of altitude, but it can vary depending on local weather conditions and other factors.
Therefore, In general, the lapse rate decreases with an increase in humidity and the presence of clouds, and it increases with a decrease in humidity and the absence of clouds.
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How would you describe the difference in the motion of the skier from when he starts at the top of the slope to when he is halfway down the hill?
A skier starts at the top of a hill with of potential energy. At the bottom of the hill, she has only of kinetic energy, this is the difference in the motion of the skier from when he starts at the top of the slope to when he is halfway down the hill.
What is potential energy?Potential energy is a type of stored energy that depends on the interactions of various system elements. The potential energy of a spring rises when it is compressed or expanded. If a steel ball is lifted above the ground as opposed to falling to the ground, it has higher potential energy.
Any item that is raised from rest has an energy that may be released at a later time; for this reason, it is referred to as potential energy.
Examples include elevating an item, stretching a spring, and using a battery. The two major forms of energy are potential and kinetic.
Potential energy is lost and kinetic energy, or the energy of motion, is acquired as the skier starts the ascent down the slope. The skier increases speed as he loses height.
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Besides relative humidity, identify another weather variable of the air in the classroom
that may be determined by using both temperature readings on the hygrometer.
The hygrometer calculates the relative humidity in the air as a percentage.
How are relative humidity levels determined?
In meteorological science, hygrometers are devices that measure the humidity, or the amount of water vapour in the air. To measure humidity, hygrometers of many major types are employed.
What are the two thermometers and how are they different from one another?
An infrared thermometer's digital sensor or a mercury-in-glass thermometer's bulb are two examples of temperature sensors that vary in response to temperature, and a visible scale is an example of a means to translate this change into a numerical number.
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A food worker has just rinsed a dish after cleaning it.
What should he do next?
a. Scrub the dish
b. Air-dry the dish
c. Sanitize the dish
d. Put soap on the dish
Answer:
C. Sanitize the dish
Explanation:
Sanitizing the dish helps to kill any remaining bacteria or other pathogens that may be present on the dish, which can help to prevent food-borne illness.
a physical injury to the body's tissues can result from the repeated action of relatively small forces acting on tissue, and this is called: question 19 options: a) a chronic injury. b) a mechanistic injury. c) an acute injury. d) a microinjury.
A physical injury to the body's tissues can result from the repeated action of relatively small forces acting on tissue, and this is called a chronic injury.
Human frame tissue is some manner of describing how our cells are grouped in a fantastically organized manner consistent with particular structure and function. These groupings of cells form tissues, which then make up organs and numerous components of the body. As an instance, it’s easy to look at and feel the muscle in the body. Muscle is one of the four types of human frame tissue.
A chronic injury is the end result of prolonged, repetitive movement, especially while doing activities that include swimming, strolling, and biking. As such, persistent accidents are often referred to as overuse injuries.
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hyaline cartilage extracellular matrix of hyaline cartilage identify the structure indicated by the arrows
Collagen type II is the dominant fiber type of matrix in hyaline cartilage extracellular matrix of hyaline cartilage as indicated by the arrows.
The extracellular matrix contains chemicals that enable the cartilage to draw and retain water, making it a great shock absorber as well. (This crucial function pertains to bones that come into contact with one another at joints.) Type II collagen, proteoglycans, glycoproteins, and extracellular fluid make up the matrix of hyaline cartilage. Up to 40% of the dry weight of the semitranslucent blue-gray hyaline cartilage matrix is made up of collagen.
The most common type of cartilage in the body is hyaline cartilage. Although collagen type II is the predominant fiber type in the matrix, it cannot be seen with a light microscope.
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species that undergo sexual selection often have males and females that differ dramatically in phenotype, a phenomenon called sexual dimorphism. since sexual dimorphism is a result of selection for the two extremes of a phenotypic trait, what pattern of selection is this?
Option A disruptive is the correct answer. This pattern of selection is disruptive because it favours the two extremes of a phenotypic characteristic, which results in sexual dimorphism.
Sexual dimorphism is the systematic shape difference between individuals of different sexes within the same species. For instance, the male in some species, such as many animals, is bigger than the female. The female of some species, like some spiders, is larger than the male. This sexual dimorphism has been noted in early development studies, childhood, adolescence, and maturity. On average, males' total brain size is around 8%–15% greater than females' (uncorrected for body size).
As a result, we can conclude that Option A disruptive is the best choice. Sexual dimorphism results from selection toward the two extremes of a phenotypic characteristic, hence this pattern of selection is disruptive.
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Complete Question:
Species that undergo sexual selection often have males and females that differ dramatically in phenotype, a phenomenon called sexual dimorphism. Since sexual dimorphism is a result of selection for the two extremes of a phenotypic trait, what pattern of selection is this?
Choose one:
A.disruptive
B.stabilizing
C.directional
match each term to its defention
Answer: Can you add the image?
Explanation: There is nothing here.
(b) Many insects use litter on the soil surface as a habitat and for nutrients. Discuss how the
invasion of earthworms is likely to change the forest food web.
The invasion of earthworms is likely to change the forest food web by improving the nutrient level of the soil but decreasing the amount of litter on the soil surface, thus, decreasing the number of insects on the forest floor.
What is a food web?A food web is an interconnection of related food chains showing how organisms that are present in the food chain depend on each other for the provision of food.
The invasion of earthworms is likely to change the forest food web. Earthworms present in soil increase soil fertility by burrowing, feeding on leaf litter, and mixing soil
These activities of earthworms affect the soil properties causing changes in soil layers, vegetation, and soil organisms.
For example, the insects that use litter on the soil surface as a habitat and for nutrients would not have enough litter to make their home.
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the movement of a drug through the tissues and cells of the body, including the processes of absorption, distribution, and localization in tissues; biotransformation, and excretion by mechanical or chemical means is called
Pharmacokinetics is the study of how drugs are absorption, distributed, transformed biologically, and excreted by the body.
Pharmacodynamics is the study of a drug's biochemical and physiological effects and how it works. The transport of a medication into the bloodstream is known as absorption. There are many variables that affect how quickly and how much a medicine is absorbed, including: administration route a drug's chemical makeup and formulation. Drug metabolism is the term used to explain how pharmaceutical drugs are biotransformed in the body to facilitate easier elimination. Subcellular delivery refers to the process of delivering a drug's active form to the cell's target region of action.
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what are 3 ways that we can reduce the amount of carbon dioxide in the atmosphere?
The 3 ways to reduce carbandioxide in the atmosphere are :
Coastal Blue Carbon.Planting Trees.Forest Management.Agricultural Practices.Why is atmospheric carbon dioxide required?Carbon dioxide is a crucial greenhouse gas that helps keep heat in our atmosphere. Without it, our planet would be too cold to support life. But other aspects of Earth's climate are being impacted by an increase in average global temperatures spurred on by growing CO2 levels in our atmosphere.
Carbon dioxide is the source of carbon, the fundamental component of all life. Just as plants require carbon dioxide to thrive, animals eat plants to obtain the carbon they require to survive.
When incoming solar radiation is reflected back to space near the earth's surface, the atmosphere's carbon dioxide absorbs and stores the energy. The earth's surface would be cooler than it is now if there were no carbon dioxide because there would be no solar energy absorption.
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Biologists are analyzing soil to check for the number of worms and grubs in a wildlife preserve. Let the random variable w represent the number of worms found in 1 square foot of soil, and let the random variable g represent the number of grubs found in 1 square foot of soil. The following tables show the probability distributions developed by the biologists for w and g.
Note that using the discrete distributions, it is found that the mean and standard deviation are given by: μ=5.28 and σ=1.67 (Option C)
What is Discrete Distribution?A discrete distribution has data that can only take on particular values, such as integers. A continuous distribution is one in which data can have any value within a certain range (which may be infinite).
Not that:
The total of all outcomes multiplied by their relative probability yields the mean of a discrete distribution.The variance is calculated by multiplying the total of the differences squared between each event and the mean by their corresponding probabilities.The mean is the total of the means when two variables are joined, whereas the standard deviation is the square root of the sum of the variances.The computation is given as follows:
For Worms:
E[tex]_{w}[/tex] (X) = 0.05(0) + 0.06(1) + 0.18(2) + 0.35 (3) + 0.3(4) 0.05 (5) + 0.01 (6)
= 2.98
Var[tex]_{w}[/tex] (X) = 0.05 (0-2.98)² + 0.06 (1-2.98)² + 0.18(2-2.98)² + 0.35 (3-2.98)² + 0.3(4-2.98)² + 0.05 (5-2.98)² + 0.01 (6-2.98)²
= 1.4596
For Grubs:
E[tex]_{g}[/tex] (X) = 0.05(0) + 0.21(1) + 0.27(2) + 0.38(3) + 0.05(4) + 0.03(5) + 0.01 (6)
= 2.3
Var[tex]_{g}[/tex] (X) = 0.05 (0-2.3)² + 0.21(1-2.3)² + 0.27(2-2.3)² + 0.38(3 - 2.3)² + 0.05(4-2.3)² + 0.03(5-2.3)² + 0.01 (6-2.3)²
= 1.33
The sum, therefore, is given as:
E (X) = E[tex]_{w}[/tex] (X) + E[tex]_{g}[/tex] (X)
= 2.98 + 2.3
μ = 5.28
σ = √ (Var[tex]_{w}[/tex] + (Var[tex]_{g}[/tex] (X)
= √ (1.4596 + 1.33)
= √2.7896
= 1.67020956769
σ [tex]\approx[/tex] 1.67
Hence, it is correct to state that in the discrete distributions - mean and standard deviation are given by: μ=5.28 and σ=1.67 (Option C).
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Full Question:
Biologists are analyzing soil to check for the number of worms and grubs in a wildlife preserve. Let the random variable W represent the number of worms found in 1 square foot of soil, and let the random variable G represent the number of grubs found in 1 square foot of soil. The following tables show the probability distributions developed by the biologists for W and G.
W 0 1 2 3 4 5 6
Probability 0.05 0.06 0.18 0.35 0.30 0.05 0.01
G 0 1 2 3 4 5 6
Probability 0.05 0.21 0.27 0.38 0.05 0.03 0.01
Assume that the distributions of worms and grubs are independent. What are the mean, μ, and standard deviation, σ, for the total number of worms and grubs in 1 square foot of soil?
A) μ=5 and σ=1.67
B) μ=5 and σ=2.36
C) μ=5.28 and σ=1.67
D) μ=5.28 and σ=2.36
E) μ=5.28 and σ=2.79
Earth Science
Many massive stars end their life cycles as black holes. Why do astronomers not believe the sun will end its life cycle as a black hole?
1. It is not massive enough.
2. It is much too hot.
3. It is much too hot.
4. It is not a binary star.
Which accurately describes coral reefs? Select the three correct answers.(2 points)
1. Coral reefs often are located in nutrient-poor waters.
2. Coral reef ecosystems have low biodiversity.
3. Coral reef ecosystems are among the most biodiverse on Earth.
4. Coral reefs are sturdy structures that can exist for thousands of years.
5. Coral reefs are delicate structures that usually exist for less than 10 years.
6. Coral reefs often are located in nutrient-rich waters.
Answer: 1,4,5
Explanation:
Stars have a certain life period after that they will lost their heat and light and will end as a black hole. Some astronomers believe that, sun does not changes to a black hole because, sun is not so huge in comparison with other massive stars.
What is supernova?Supernova is a state of stars at which they loss heat and light energy and turns into a black hole or white dwarf. Thus, in fact a dead star is called a supernova.
Every stars including sun has a life period upto which they can be bright and hot. But some astronomers believe that sun cannot having a super nova state because sun is not that much hot and massive like other stars.
Coral reefs are ecosystems have low biodiversity. They are sturdy structures that can exist for thousands of years. Coral reefs often are located in nutrient-rich waters.
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The amount of plasma that filters into the nephrons is approximately ________ of the total volume.
The amount of plasma that filters into the nephrons is approximately 1/5 of the total volume.
Nephrons main tasks include filtering the blood of all waste products, including solid wastes and excess water, as well as reabsorbing, secreting, and excreting a wide range of compounds.The tiny molecules are transported into the glomerular capsules and proceed through a twisting network of tubules when the blood is forced through the glomerulus under high pressure.The cell found in each tube absorbs various molecules, with the exception of glucose, water, and other advantageous compounds known as the ultrafiltrate. More water is removed from the ultrafiltrate before it leaves the nephrons as the ultrafiltrate molecules become increasingly hypertonic as they go down the tubules.
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in dna, the two long strands that form a spiral are called what
4. What is TRUE about the use of bones to solve crimes?
Children are best identified by
observing ribs and joints.
Adults are best identified using teeth and long bones.
When human bones are found, a crime definitely took place.
The long bones are measured in length and circumference.
The truth about the use of bones to solve crimes is that long bones are measured in length and circumference. That is option D.
What is a bone?A bone is defined as a rigid and hard structure which consists of compact tissues and makes up the musculoskeletal system of the body.
There are different types of bones which include the following:
Long bone: has a long, thin shape. Short bone: has a squat, cubed shape. Flat bone: has a flattened, broad surface. Irregular bone: has a shape that does not conform to the above three types.The long bones of human being can be measured in length and circumference which is an advantage against that of animals and can serve as solution in a crime scene.
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What would be the best design for an experiment that tests how much water expands when frozen?
A. Purchase a small plastic container and mark increments of volume on the outside. Put in 5 ounces of water and place in the freezing compartment of your refrigerator for 8 hours. Compare the end (frozen) volume with the beginning (liquid) volume.
B. Purchase a small plastic container of bottled of water, any brand, commercially
sealed. Mark water line with a marker. Place it in the freezing compartment of your refrigerator for 8 hours. Observe the results.
C. Take a small bowl and fill it half full of water. Mark the level. Place it in a freezing compartment of your refrigerator for 8 hours. Observe the results.
Answer: C
Explanation:
scientists believe that perching birds originated on the continents of australia and antarctica. how would these scientists explain the discovery of ancient perching bird fossils in africa?
The concept that dinosaurs were the direct ancestors of birds was backed by new research on ancient specimens as well as by field finds of dinosaur and early bird species.
Numerous traits and behaviours that distinguish modern birds were also present in dinosaur forebears. Theropods were a class of meat-eating dinosaurs from which birds descended. Although birds originated from little theropods rather than gigantic ones like Tyrannosaurus rex, they nonetheless belong to the same group as the dinosaur. The earliest fossilised bird remains date back 150 million years. Since they have a foot structure that enables them to grip branches, many bird species, including the majority of songbirds, are also known as "perching birds." The shape of one toe at the back of the foot works as a pincher, stabilising the perched bird.
The complete question is:
Scientists believe that perching birds originated on the continents of Australia and Antarctica. How would these scientists explain the discovery of ancient perching bird fossils in Africa? A) At one time, the climate in Earth was consistent throughout the planet. B) The fossils may have been moved by man, animals, or Earth’s constructive and destructive processes. C) The birds originated in Africa, but migrated with human populations to Australia and Antarctica to Africa. D) During the life of Pangea, Antarctica, Australia and Africa were neighboring
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Periodic Table Coloring Activity-15 pts
5) If two atoms are in the same group they will have_ properties. If two atoms are in the
same period, they will have
properties.
6) As you go from right to left, metallic properties_
nonmetallic properties,
and
properties.
As you go left to right,
7) Metalloids contain both
8) The periodic table is arranged by increasing
9) In 1869, Dmitri Mendeleev arranged the periodic table by increasing
10) To become stable, atoms want to have a full
decreases
What is it referred to as when two atoms are identical?
Carbon monoxide (CO), which consists of a single carbon atom and a single oxygen atom, is an illustration of a diatomic molecule. It is known as a homonuclear diatomic molecule if the two atoms are from the same element, such as oxygen (O2) and nitrogen (N2).
As we move up the periodic table, fewer shells are present, making it more challenging for an atom to lose electrons.
Because of this, the metallic character gets weaker as you move up a group. As a result, choice three is right.
In a periodic table, the tendency to gain electrons decreases as we move from left to right. The metallic character fades over a period of time as it moves from left to right.
It is the periodic chart that
Learn about Periodic table
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