define ostia in science
Answer:
Ostia are tiny pores present all over the body of sponges. its function is to let the water, along with desire nutrient flows interior of the sponges.
Answer:
An opening, a passage.
Explanation:
science - Anatomy
How many different genotypes are possible from a cross between the parents RRYy and rrYY?
Answer:
1 genotype is possible
RrYy
Two lizards with different coloring exist within the same ecosystem. One lives in the trees, and the other prefers hiding among rocks. They are separate species because
they behave differently
Othey have different characteristics
Othey cannot successfully reproduce
Othey exist within the same ecosystem
Natural selection is that the process through which populations of living organisms adapt and change.
What are the adaptations behavior in organisms?
Many animals are well adapted to biotic and abiotic conditions due to behavioral, physiological, or structural adaptations that increase their chances of survival and reproduction.
Behavioral - responses made by an organism that help it to survive/reproduce..
Physiological - a bodily process that helps an organism to survive/reproduce.Structural - a feature of an organism’s body that helps it to survive/reproduce.Thus, we can conclude that the correct option is (b).
They are separate species because they cannot successfully reproduce.
which means they have different adaptation methods.
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explain how bacteria cam develop resistance to an antibiotic?
Explanation:
Bacteria develop resistance mechanisms by using instructions provided by their DNA. Often, resistance genes are found within plasmids, small pieces of DNA that carry genetic instructions from one germ to another. This means that some bacteria can share their DNA and make other germs become resistant.
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Adaptation:
Question 4
Which phrase indicates that organisms in a population with the best-adapted set of traits become more common over time?
Select one:
Mutations are not harmful.
Bigger is better.
All organisms have a common ancestor.
Survival of the fittest.
Answer:
Mutation is yes a harmful
Explanation:
A common genetic mutation that lowers levels of the enzyme cathepsin C severely reduces a person’s ability to ward off periodontitis, or gum disease. The enzyme triggers immunological reactions that destroy diseased cells and eliminate infections
in the mouth. But researchers are developing ways to restore the enzyme to normal levels. Once that happens, we will be able to eliminate periodontitis.
Which one of the following is an assumption on which the argument depends?
(A) Restoring cathepsin C to normal levels is the only way to eliminate periodontitis.
(B) Genetic mutation is the only cause of lowered levels of cathepsin C.
(C) Researchers will soon succeed in finding means of restoring cathepsin C to normal levels.
(D) Persons who do not have the genetic mutation that lowers levels of cathepsin C do not get gum disease.
(E) A person whose cathepsin C level has been restored to normal will not suffer from periodontitis.
Answer:
(E) A person whose cathepsin C level has been restored to normal will not suffer from periodontitis.
Explanation:
Considering the fact that there may be some other causes of periodontitis aside from the lowered levels of the enzyme.
Therefore, should there be some other causes of periodontitis, hence, it can be concluded the process of restoring the enzyme to normal levels might not be sufficient for eliminating periodontitis.
Hence, the author's argument is solely based on this assumption, and option. Hence, option (E) is the correct answer.
asexual reproduction can be a disadvantage to a population if
Answer:
it can be a disadvantage to population because it produces many offsprings which can lead to high increase in population.
A lion chases an antelope, which narrowly escapes being eaten. Which
energy conversion saved the antelope's life?
Answer:
Chemical energy to kinetic energy.
Explanation:
Answer:
Chemical energy
Explanation:
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Which of the following is the correct Lewis structure diagram for Sodium (Na)? (2 points)
Select one:
a. The letters Na with one dot
b. The letters Na with two dots
c. The letters Na with three dots
d. The letters Na with four dots
Answer:
a. The letters Na with one dot
Explanation:
An atom can be defined as the smallest unit comprising of matter that forms all chemical elements. Thus, atoms are basically the building blocks of matters and as such determines or defines the structure of a chemical element.
Generally, atoms are typically made up of three distinct particles and these are protons, neutrons and electrons.
In Chemistry, electrons can be defined as subatomic particles that are negatively charged and as such has a magnitude of -1.
Valency can be defined as a measure of the combining power of a chemical element with other atoms to form a molecule or chemical compound.
Valence electrons can be defined as the number of electrons present in the outermost shell of an atom. Thus, valence electrons are used to determine whether an atom or group of elements found in a periodic table can bond with others.
Sodium is a chemical element that is found in group (1) of the periodic table and as such it has 1 electrons in its outermost shell. Also, the chemical symbol for Sodium is Na and it has one (1) valence electron.
A Lewis structure can be defined as a structural representation of an atom or molecule by using a dot to show the position and distribution of electron(s) around the atom or molecule.
Hence, the letters Na with one (1) dot is a correct Lewis structure diagram for Sodium (Na) because it has just one (1) valence electron in outermost shell.
For example, the Lewis structure diagram for Sodium (Na) is •Na.
Answer:
Na with 1 dot
Explanation:
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Why is it difficult to bond three phosphate groups to Adenosine?
They have the same charge and repel each other.
They form a strong attraction to each other.
They are like opposite poles of a magnet.
The energy is evenly dispersed across all three bonds.
Many animals have a mutually-beneficial, symbiotic relationship with bacteria that reside in their guts. To study the effects of these relationships in more detail, research organisms such as fish and mice have been raised under germ-free conditions. What important process do you predict is compromised in germ-free mice
Answer:
Explanation:
Quá trình tiêu hoá và hấp thụ chất dinh dưỡng
Which of the following is NOT of the major biogeochemical cycles?
A.Life cycle
B.Water cycle
C.Carbon cycle
D.Phosphorus cycle
water cycle............
The following is NOT of the major biogeochemical cycles D.Phosphorus cycle is D.Phosphorus cycle.
What is the difference between Carbon cycle and Phosphorus cycle?The major distinction among carbon and phosphorus cycle is that carbon cycle interacts with the environment while phosphorus cycle does now no longer engage with the environment. Therefore, the carbon cycle is a sort of gaseous biking while the phosphorus biking is a sort of sedimentary rocks.
As in comparison to nitrates & different macro elements, decomposers take longer time to decompose any lifeless biota into phosphates. Decomposers are organisms mainly a soil bacterium, fungus, or invertebrate, that decompose natural material. These are the motives for phosphorus cycle being the slowest biogeochemical cycle.
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Most fresh water fish are hypertonic, meaning their body cells contain more salt than the surrounding water. Since osmosis should push water into their cells, why don't they explode? They don'Ât drink any water because they get so much from osmosis. They have adapted to live with high osmotic pressure. They urinate a lot, so the water does not build up. Their cells have adapted to absorb salt. All of the above
Answer:
They urinate a lot, so the water does not build up.
Explanation:
Freshwater fishes are fishes that live in freshwater habitat i.e. little or no salt. This means that the fishes are hypertonic (have more salt) to their external environment. Due to their hypertonicity, freshwater fishes tend to take in more water via osmosis.
Freshwater fishes, however, do not explode despite this phenomenon because they pass out the excess water via urine waste. Freshwater fishes urinate a lot, hence, the absorbed water does not build up in their bodies.
How could the genetic engineering process affect the genetic variation of your organism?
Why are there many separate ecosystems in a rain forest? A. There are three different seasons in a rain forest . B. Rain forests have very few primary consumers.C. Different conditions support different organisms.D. There are three levels of consumers in rain forests.
Answer:
C. Different conditions support different organisms
Why do frogs have triangular heads?
Plz help me with this question!!
Answer:
Aquatic frogs tend to have long, flat skulls, while digging species often have short skulls with pointed snouts, a shape that also enables them to use their mouths like chopsticks to catch small, scurrying prey such as ants and termites.
Explanation:
What do we call the likelihood that in event will occur
Answer:
It's Called Probability.
Explanation:
What would be the resulting polypeptide chain that is produced from the DNA template code: TACTTCAAAATC? Use the following RNA codon to amino acid table to help you figure out the resulting polypeptide. Show your steps.
Answer:
Methionine- Lysine- leucine- stop
Explanation:
This question is describing the processes of transcription and translation, which are both involved in protein synthesis. Transcription is the synthesis of a mRNA molecule from a DNA template while translation is the synthesis of a polypeptide/amino acid sequence from a mRNA template.
The following DNA molecule was given as follows; TAC TTC AAA ATC. Firstly transcription will synthesize an mRNA molecule based on complementary base pairing rule. The resulting mRNA will be: AUG AAG UUU UAG
Next, the process of translation which involves the synthesis of an amino acid sequence from mRNA. Using the genetic code will produce the following:
Methionine- Lysine- leucine- stop
Besides plants, what other factor distinguishes one biome from another biome?
(A) the number of plant species in the biome
(B) the variety of animal species
(C) average temperatures and precipitation
(D) geographic location
Which of the following describes a solution that contains a buffer?
• A. Citric acid is added to the solution, but the pH of the solution does
not change.
O B. Distilled water is added to the
does not change.
solution, and the ph of the solution
• C. Acetic acid is added to the solution, and the ph of the solution
becomes lower.
D Sodium hydroxide, a base, is added to the solution, and the pH of
the solution becomes higher.
Answer:
a Citric acid is added to the solution, but the pH of the solution does
not change.
Explanation:
Write one functions of seed.
Seeds serve several functions for the plants that produce them.
What kind of rock is this?
igneous
Where would this rock most likely be formed?
To which group of rocks would this rock belong?
Rocks can be classified based on texture. The
size of the grains in a rock affects its texture.
Coarse-grained rocks have large grains, and fine-
grained rocks have small grains.
Rocks formed from magma under Earth's surface
have larger grains than rocks formed from lava
on Earth's surface. This is because magma cools
slower underneath the ground than it does above
ground.
Metamorphic Rock Isua
Metamorphic rock, estimated to be as old as 3.8 billion years, located near Isua at Qorqut Sound, Greenland.
Answer:
What kind of rock is this?
✔ igneous
Where would this rock most likely be formed?
✔ underneath Earth’s surface
To which group of rocks would this rock belong?
✔ coarse-grained rocks
Explanation:
Just worked on this assignment
ANSWER AND I’LL GIVE BRAINLIEST
Which of the following statements can you infer would happen If one organ system stopped working?
a. The other organ systems would have to work harder to make up for the broken system
b. The other organ systems would stop working too.
c. The other organ systems would still work on their own but might have to work harder to complete their function correctly.
Answer:
b
Explanation:
After one system shuts down, the others would slowly start to shut down as well until the body can no longer maintain homeostasis and the person would slowly die. 3. All systems would be working together but the main ones would be muscular, nervous, and skeletal.
laws of thermodynamics
Answer:
The Zeroth Law of Thermodynamics states that if two systems are in thermodynamic equilibrium with a third system, the two original systems are in thermal equilibrium with each other. The Second Law of Thermodynamics states that the state of entropy of the entire universe, as an isolated system, will always increase over time. The First Law of Thermodynamics states that energy can be converted from one form to another with the interaction of heat, work and internal energy, but it cannot be created nor destroyed, under any circumstances. The 3rd law of thermodynamics will essentially allow us to quantify the absolute amplitude of entropies.
An individual with two different versions of a gene is genetically ____________ . In traits with a simple pattern of inheritance, only the trait conferred by the ____________ form of the gene will be visible. The other form of the gene is ____________ : it confers a trait that is only visible when the individual is genetically ____________ , or has two identical copies of the gene.
Answer:
heterozygous; dominant; recessive; h.o.mo-zygous
Explanation:
Genetics can be defined as the scientific study of hereditary in living organisms such as humans, animals and plants.
In Genetics, co-dominance can be defined as a phenomenon in which two (2) alleles of the same gene are present in a living organism and both are equally expressed to a degree or simultaneously.
This ultimately implies that, co-dominance is a phenomenon that typically involves the relationship between alleles i.e the two (2) versions of a gene present in living organisms. Also, a single version of a gene expressed by a living organism is referred to as an allele.
Trait can be defined as a distinguishing quality or characteristic of a living thing.
Simply stated, a trait refers to the specific features or characteristics possessed by a living organism. It is essentially transferred from the parent of a living organism to her offspring and as such distinguishes him or her.
Some examples of traits in genetics are colorblindness, handedness, curly hair, height, complexion, weight, hair color, dimples, tongue-roll, etc.
In Genetics, when an individual has two (2) different versions of a gene, he or she is said to be genetically heterozygous.
In traits with a simple pattern of inheritance, only the trait conferred by the dominant form of the gene from the parent organism will be visible in the offspring of a living organism. The other form of the gene is recessive : it confers a trait that is only visible when the individual is genetically , or has two identical copies of the gene.
What is the control for “which bait works best for a homemade fly trap?”
Answer:
A glass of water or an empty cup
Explanation:
If no flies are attracted, that means your experiment is not flawed.
The MLH1 protein dimerizes with the PMS2 protein to form a complex that is involved in the correction of errors of DNA replication. Loss-of-function mutations in the genes that encode for these proteins increase the incidence of colon cancer. Which type of DNA error would be repaired by the activity of this complex
Answer:
Mismatched bases
Explanation:
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biological term for control of the body temperature
All the following rely on ATP as a source of energy except
Select one:
a. the active transport of glucose from the small intestine to the blood
b. diffusion and osmosis across semi-permeable membranes
c. the movement of the flagella of sperm for motility
d. exocytosis of waste substances across a semi-permeable membrane
Answer:
b. diffusion and osmosis across semi-permeable membranes
Explanation:
ATP (adenosine triphosphate) is a high energy carrying molecule in the system of living organisms. It posseses the ability to store and release energy for use by organisms during biochemical activities. However, some processes do not require ATP to occur and are called PASSIVE TRANSPORT while those that require energy (ATP) are called ACTIVE TRANSPORT.
In the above options, the processes listed as follows require ATP to occur:
- The active transport of glucose from the small intestine to the blood
- The movement of the flagella of sperm for motility
- Exocytosis of waste substances across a semi-permeable membrane
However, the diffusion and osmosis across semi-permeable membranes, which is a passive transport does not require ATP.
While you and your little cousin are walking through a natural history museum, she points out the skull of an australopithecine with a large crest on the top and asks you what its purpose was. How might you correctly sum up this complicated evolutionary trait for your little cousin
Answer:
The purpose of the crest was to provide a surface for masticatory muscle attachment or insertion.
Explanation:
This crest is called the sagittal crest. It is present in extinct hominids, such as Australopithecus and Paranthropus, and can also be found in living animals such as gorillas or lions and some reptiles.
The sagittal crest is a bony structure that crosses the hominids´ skull longitudinally, and it is so well-developed that it stands out notoriously.
This crest, like others in the skulls, provides an attachment surface for many muscles. In the particular case of the sagittal crest, it is believed to provide an insertion area to mastication muscles.
It seems that Australopithecus had a special diet composed of tough items. The hominid probably needed to strong bite while eating. The strong jow muscles gave them the possibility to bite but needed a wide area for insertion. The sagittal crest provided that wide surface. There was a direct relationship between the size of the crest and the muscle mass. The bigger the crest was, the more developed the muscle was.
It is believed that in living animals, such as gorillas, the development of the crest in males is for sexual selection and reproductive success. The bigger the crest is, the more attractive the male is, and the more chances to be selected by the female to mate it will have. Some hypothesize that the development of the crest in Australopithecus could also be related to sexual selection.
