Answer:
mallard ducks I think so
Answer:
D.
Explanation:
Galapagos tortoises have been and continue to be threatened by predation and habitat destruction from invasive species, and increasing human
How does the Gulf Stream affect London?
O
A. It moves warm water north from the Gulf of Mexico during the winter, keeping the temperature constant year round.
0
B. The moving water causes lower air pressure which holds less moisture and reduces the precipitation that London
receives.
C. It moves warm water north from the Gulf of Mexico, making London warmer than it should be at its latitude.
D. It moves cool water north from the Gulf of Mexico, making London colder than it should be at its latitude.
Answer:
The Gulf Stream affects London because C. It moves warm water north from the Gulf of Mexico, making London warmer than it should be at its latitude.
Explanation:
If it weren't for the Gulf Stream, London would have the same climate as Canada rather than New York. This is why latitude is not the only factor for an area's average temperature throughout a certain time of a year.
You are running a genetics experiment. Which of the following will help you obtain the copies of the gene you need?
A. Ribosome
B. Mesosome
C. Plasmid
D. Nucleus
Answer:
D
Explanation:
i think this is the answer because the nucleus contains threads of DNA called chromosomes.which can help in a genetic experiment.
I hope this helps
In the given context, Nucleus would help in obtaining the copies of the gene.
The nucleus controls and regulates the activities of the cell and carries the genes, structures that contain the hereditary information.
What is Nucleus?In cell biology, the nucleus is a membrane-bound organelle found in eukaryotic cells.
The nucleus was discovered by Robert Brown in 1831.
Nuclear DNA is a multiple long linear molecules in a complex with a large variety of proteins, such as histones, to form chromosomes. The genes within these chromosomes are structured in such a way to promote cell function.
The nucleus maintains the integrity of genes and controls the activities of the cell by regulating gene expression and thus control the center of the cell.
The main function of the cell nucleus is to control gene expression and mediate the replication of DNA during the cell cycle.
Nucleus houses an organism’s genetic code, which determines the amino acid sequence of proteins critical for day-to-day function, it primarily serves as the information center of the cell has been found that replication happens in a localized way in the cell nucleus.
What is Ribosomes?A ribosome is a complex molecular machine found inside the living cells that produce proteins from amino acids during protein synthesis or translation. The process of protein synthesis is a primary function, which is performed by all living cells.
Ribosomes are specialized cell organelles and are found in both prokaryotic and eukaryotic cells. Every living cell requires ribosomes for the production of proteins.
This cell organelle also functions by binding to a messenger ribonucleic acid (mRNA) and decoding the information carried by the nucleotide sequence of the mRNA.
They transfer RNAs (tRNAs) comprising amino acids and enter into the ribosome at the acceptor site. Once it gets bound up, it adds amino acid to the growing protein chain on tRNA.
What is Mesosome?Mesosome is formed by an extension of the plasma membrane into the cell wall. These extensions are usually in the form of vesicles, tubules, and lamellae.
The main use of mesosomes are:
- Synthesis of a cell wall.
- DNA replication.
- Distribution of daughter cells, respiration, secretions, etc.
What is Plastid?Plastids are double-membrane organelles which are found in the cells of plants and algae.
Plastids are responsible for manufacturing and storing of food. These often contain pigments used in photosynthesis and different types of pigments that can change the color of the cell.
Different types of plastids with their specialized functions are:
- Chloroplasts
- Chromoplasts
- Gerontoplasts
- Leucoplasts
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Which of the following would ATP NOT be used for as energy?
A. Osmosis
B. Healing a cut
C. Keeping warm
D. Push ups
Answer:
[tex]\boxed {\boxed {\sf A. \ Osmosis}}[/tex]
Explanation:
ATP or adenosine triphosphate is used as energy in all living organisms. It is required for many processes to keep an organism alive. We are looking for the process that does not require ATP.
A. Osmosis
Osmosis is the diffusion of water across a selectively permeable membrane. It is a type of passive transport, so there is no energy expenditure. ATP is not used, but we can check the other answer choices.
B. Healing a cut
Healing a cut requires transporting substances to the cut, inflammatory responses, and cell division to repair the cut. This does require ATP.
C. Keeping warm
To stay warm the body's blood vessels near the surface constrict so less heat is lost and the sweat glands are inactivated. This requires ATP.
D. Push ups
Push ups require many different muscles throughout the body and exercise requires lots of ATP.
The correct answer is Choice A. Osmosis.
How do temperature and concentration of monounsaturated phospholipids change the rate at which molecules permeate the plasma membrane?
Answer: At low temperatures the fluidity of the membrane decreases and it favors fluidity. The higher the concentration of unsaturated fatty acids, the less tightly the phospholipids can bind and the more fluid (more permeable).
Explanation:
The plasma membrane is a lipid layer that delimits the entire cell, dividing the extracellular medium from the intracellular (the cytoplasm of a cell). They are composed of phospholipids, which are molecules composed of glycerol, a phosphate group and two lipid chains (such as fatty acids). Glycerol is a three-carbon molecule that functions as the backbone of this membrane. A geometry is formed that allows the phospholipids to line up side by side to form broad sheets. They are insoluble in water, but their unique geometry causes them to aggregate in layers without any energy input, as they possess a hydrophilic phosphate head and a hydrophobic tail consisting of the two fatty acid chains. The hydrophilic heads of the phospholipids in a bilayer membrane face outward and are in contact with the aqueous fluid inside and outside the cell. Because water is a polar molecule, it readily forms electrostatic (charge-based) interactions with the phospholipid heads.
Selective permeability is a property of the plasma membrane and other semipermeable membranes that allow only certain particles to pass through them. In this way, those particles that are needed by the cell can enter the cell and those that are not useful to the cell are prevented from entering. In the same way, the cell can eliminate the particles it has produced as waste. In this way, the entry and exit of substances through the membrane is regulated and the correct functioning of the cell is achieved.
For a particle to be able to cross the plasma membrane it must have a size equal to or smaller than the pores of the membrane, it must have the opposite charge to the charge of the membrane or simply have a neutral charge, and if it is larger than the pores it must be dissolved in a solution, decreasing its size and thus be able to enter the cell through the membrane.
Plasma membranes are fluid and this fluidity depends on their lipid composition and temperature. Depending on the temperature, membrane lipids can be found in two different states or phases: gel (solid-like, with more rigid hydrocarbon chains) and liquid crystal (more fluid, with more mobile hydrocarbon chains). At low temperatures the fluidity of the membrane decreases and in these conditions the increase of its concentration favors fluidity. The temperature at which the transition from one state to the other occurs is the phase transition temperature (Tc). At values below Tc, the bilayer is in the gel state and at higher values it passes to the liquid crystal. It should be noted that there is an equilibrium between the gel state and the liquid crystal state and that the characteristics of the lipids of the bilayer condition the transition temperature. In the case of bilayers consisting of only one type of lipid, the Tc is well defined. But biological membranes are complex lipid mixtures and the transition from one state to another occurs over a range of temperatures. The presence of short-chain or unsaturated fatty acids reduces the transition temperature, while saturated fatty acids and the increase in the length of the hydrocarbon chains cause this temperature to rise. Then, phospholipids with unsaturated fatty acid tails cannot bind as tightly due to the bent structure of their tails. For this reason, a membrane of unsaturated phospholipids remains fluid at lower temperatures than a membrane of saturated phospholipids.
The fluidity of a membrane is the ability of a molecule to move through it. In short, the higher the concentration of unsaturated fatty acids, the less tightly the phospholipids can bind and the more fluid (more permeable) the membrane will be even at low temperatures. However, at low temperatures the fluidity of the membrane decreases (lower permeability) but the effect will depend on the composition of the fatty acids. To determine the exact permeability, it is necessary to relate the concentration of unsaturated bonds and the length of the fatty acids in the phospholipids and the temperature.
Which phase happens first in meiosis
Although ____________ is the most efficient and sometimes least-costly way to cut trees, it can also harm an ecosystem by causing increased erosion, sediment pollution of nearby waterways, and losses in biodiversity.
Answer:
Clear cutting.
Explanation:
Clear cutting is the most efficient and less costly way to cut down the trees. This practice of cutting trees can harm an ecosystem by increasing erosion, sediment pollution of waterways, and losses in biodiversity that lives there before the cutting of trees. This clear cutting destroy the habitat of thousand of organisms and erosion of the productive layer of soil occurs that is depleted due to heavy rainfall and wind.
Which actions could be categorized in the “aerobic” section of the Venn diagram?
Check all that apply.
consists of three stages
yields 36 ATP molecules
does not require oxygen
produces lactic acid
starts process with a glucose molecule
Identify the stage of cellular respiration in which each of the following takes place.
Produces 32 ATP molecules
Creates four ATP molecules, but then gains overall only two
Gives off carbon dioxide
Gives off water
Produces two ATP molecules
Answer:
start process with gulcose
Explanation:
simple
11
Select the correct answer.
Which part of an atom has most of its mass?
A.
electrons
B.
neutrons
Oc.
nucleus
OD.
protons
Reset
Answer:
C NUCLEUS
Most of an atom's mass is in the nucleus—a small, dense area at the center of every atom, composed of nucleons. Nucleons include protons and neutrons. All the positive charge of an atom is contained in the nucleus, and originates from the protons.
What is mean by photosynthesis?
Answer:
the process by which green plants and some other organisms use sunlight to synthesize nutrients from carbon dioxide and water.
Hey there!
Photosynthesis is the reaction that converts light energy to chemical energy in sugar and carbohydrates. Humans can't eat sunligh, so we eat the plants. Plants convert the energy in the sunlight into chemical energy using chlorophyll. Chlorophyll is a molecule produced by plants, algae and cyanobacteria, which aids in the conversion of light energy into chemical bonds. It is the reen pigment found in the chlorookasts of higher plants. They are a part of our ecosystem, and they are lower on the food chain.
Hope this helps! I promise I did not copy or anything like that from the internet.
Have a great day! :)
How are mitosis and binary fission similar?
A. They produce identical daughter cells.
B. They occur only in prokaryotes.
C. They involve division of nuclei as well as cytoplasm.
D. They occur only during sexual reproduction.
Answer:
They produce identical daughter cells.
Which is a possible outcome of global warming?
A. Hurricanes and other extreme weather will increase
B. Most crops will grow better in warmer climates
C. Sea levels will drop all around the world
D. Disease will not be able to spread as quickly
A possible outcome of global warming is that hurricanes and other extreme weather events may increase. Therefore, the correct statement is option A.
What causes an increase in the temperature of Earth?The gradual rise in the Earth's atmosphere's average temperature that results from the buildup of greenhouse gases, primarily carbon dioxide, released by human activities like the burning of fossil fuels and deforestation is known as global warming.
The Earth's climate and weather patterns may alter as a result of this temperature rise, which might result in more frequent and severe weather events like hurricanes, floods, and droughts.
Due to alterations in precipitation patterns, increased pest pressure, and other factors, it is unlikely that most crops will grow more effectively in warmer climates. Because of the melting of glaciers and ice caps, sea levels are more likely to increase, resulting in floods in low-lying places.
Therefore, a possible outcome of global warming is that hurricanes and other extreme weather events may increase.
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Ans:using a filament of spirogyra in a laboratory Demonstrate how plasmolysi wil occur
Answer:
plasmolysis is the shrinkage of protoplast from the cell wall under the influence of a hypertonic solution.this can be observed by placing the fresh filament of spirogyra in a 10% solution of common salt.the cell undergoes exomosis.
I hope this helps
evolution by natural selection is an example of a scientific
Answer:
Ideas aimed at explaining how organisms change, or evolve, over time date back to Anaximander of Miletus, a Greek philosopher who lived in the 500s B.C.E. Noting that human babies are born helpless, Anaximander speculated that humans must have descended from some other type of creature whose young could survive without any help. He concluded that those ancestors must be fish, since fish hatch from eggs and immediately begin living with no help from their parents. From this reasoning, he proposed that all life began in the sea.
In the rock cycle, if any type of rock is broken down into little pieces, it changes into ______ rock.
Answer:
small rock
Explanation:
hope it's helpful
what is reflex action
A action that has came in result of an event
Plz answer this. I miss typed it as advanced placement.
Answer:
option 1
Explanation:
Answer:
a and R
are correct
Explanation:
plz it will help me alot
Answer:
Physical trauma, acute disease, chronic disease, infectious disease and emotional trauma.
Explanation:
Physical trauma, acute disease, chronic disease, infectious disease and emotional trauma are the ways from which health should be affected by happening of natural disasters such as earthquake and cyclones. We are able to predict the weather with the help of satellites that monitors the movement of clouds on the earth atmosphere. Advancement of technology is the main reason which enable us to predict the weather conditions as well as the coming of cyclones in a specific region.
pls answer this guys pls
Answer:
a
Explanation:
¿Cuántas partes se divide el cráneo?
Answer:
8
Explanation:
Los 5 huesos que forman la base del cráneo son el etmoides, el esfenoides, el occipital, el frontal emparejado y el temporal emparejado. La base del cráneo se puede subdividir en 3 regiones: las fosas craneales anterior, media y posterior.
Espero que esto ayude
hello!!
What´s Antibiotic
Antibiotics are drugs that are able to fight diseases caused by bacteria. Besides, it is a "golden solution" that can kill harmful bacteria (pathogenic bacteria such as fungi, actinomycetes, ...), has the effect of inhibiting the growth and spread of of these bacteria.
Answer:
antibiotics mean a type of antimicrobial substance against bacteria.
Which best describes the processes of mitosis and meiosis?
Cells in mitosis go through the PMAT stages twice to produce diploid cells while cells in meiosis go through PMAT stages once to produce haploid cells.
Cells in mitosis and meiosis go through the PMAT stages twice to produce haploid cells.
Cells in mitosis go through the PMAT stages once to produce diploid cells while cells in meiosis go through PMAT stages twice to produce haploid cells.
Cells in mitosis and meiosis go through the PMAT stages once to produce diploid cells.
Answer:
cells in mitosis go through the PMAT stages twice to produce diploid cells while cells in meiosis go through PMAT stages once to produce haploid cells, is. the best answer
Answer:
The Answer is A.) Cells in mitosis go through the PMAT stages twice to produce diploid cells while cells in meiosis go through PMAT stages once to produce haploid cells.
Explanation:
Edge 2021
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Question 7 (True False Worth 1 points) (01.02 LC) The results of an experiment can be validated through replication O True 0 False
Answer:
Im pretty sure its true ill coment latter to tell youif it is or not
Explanation:
Answer:
true
Explanation:
The results of an experiment can in fact be validated through replication
Beth broke her ankle bone. The doctor gives her a
brochure on foods she can eat to help restore the
health of her bones. Which element will help Beth
strengthen the bone?
Answer:
Calcium
Explanation:
Calcium is the healthy bone mineral. About 99% of the calcium in the body is stored in the bones and teeth. It's the mineral that makes them hard and strong. The remaining 1% is needed for many activities that help keep the body functioning normally.
Answer:
Phosphorus will strengthen her bones.
Explanation:
There are a wide number of dietary minerals that are involved in the strengthening of bones. But among all of them, calcium and phosphorus are the key minerals that play an active role in providing strength to the bones. Phosphorus keeps the bones healthy and strong. It also helps in the growth of bones.
Low amounts of phosphorus can lead to thinning of the bones, a disease termed as osteoporosis.
The presence of a negative allosteric effector on an allosteric protein would: a. cause a shift to the left in the sigmoidal curve. b. increase the number of R conformations. c. decrease the cooperativity of the substrate. d. raise the apparent value of the equilibrium constant, L. e. increase the likelihood of the binding of S.
Answer:
d. raise the apparent value of the equilibrium constant, L.
Explanation:
Allosteric regulation is a type of regulation of an enzyme by binding an effector molecule at a site other than the protein's active site (i.e., the allosteric site). The equilibrium constant (L) refers to the transition between two forms of an allosteric protein in absence of a ligand. The properties of allosteric enzymes are explained by conformational changes associated with a low-affinity tense (T) state, or a high-affinity relaxed (R) state. Negative allosteric effectors are molecules that bind to the allosteric site on an enzyme in order to decrease its activity, thereby leading the enzyme to a low activity T state and thus increasing the value of the equilibrium constant.
Which type of graph could be easily converted into a pie chart?
Answer:
bar graph can be easily converted to pie chart
What is the scientific term used for the chemical reaction when a fuel burns? (Hint: your answer should be one word.)
Answer:
Combustion
Explanation:
Combustion is the chemical reaction that happens when fuel burns.
An organism and its taxonomic key are shown below.
An image of an organism is shown. The organism has two body regions with four legs on each side. 3 mm is written next to the image of the organism. There are no claw-like pinchers.
Taxonomic Key
Step Characteristic Organism
1 8 legs Go to step 2.
More than 8 legs Go to step 3.
2 One body region Go to step 4.
Two body regions Go to step 5.
3 One pair of legs on each body segment Centipede
Two pairs of legs on each body segment Millipede
4 Less than 1 millimeter long Mite
More than 1 millimeter long Tick
5 Claw-like pinchers Go to step 6.
No claw-like pinchers Spider
6 Long tail with a stinger Scorpion
No tail or stinger Pseudoscorpion
Which organism is shown in the image?
Millipede
Spider
Scorpion
Tick
spider has no tail and has no stinger
Answer: its a spider
Explanation: cause it case a legs and it has two body regions
Biomass is a :
(a) Dry weight of living organism
(b) Fresh weight of living organism
(c) Dry weight of dead organism
(d) Fresh weight of dead organism
(1) only a (2) a,b (3) c,d (4) only c
Answer: 1. only A
Explanation: bio means living
Answer:
(a) Dry weight of living organism
hope this help you
A projectile is fired vertically upward at an initial velocity of 100 m/s. How high will it rise? How long will it take to reach that height?
The question is solved using the equations of motion
According to the equations of motion:
[tex]v^2 = u^2 -2gh[/tex]
v = final velocity
u = initial velocity
g = acceleration due to gravity
h = height
Note that at the maximum height, the final velocity (v) = 0 m/s
so we can write:
[tex]u^2 = 2gh[/tex]
[tex]h = \frac{u^2}{2gh}[/tex][tex]h= \frac{100^2}{2 * 10}[/tex]
h = 500 m
The time taken is obtained from:
[tex]v= u - gt[/tex]
since v= 0 at maximum height
[tex]u = gt\\\\t= u/g\\\\t= 100/10\\t = 10 s[/tex]
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plz help me
I will give u like plus follow u
[tex] \hookrightarrow\large\sf \: Pepsin \: is \: an \: example \: of \: \boxed{\underline{\bf \: protease.}}[/tex]
