Answer:
Reproductive isolation
Explanation:
The definition of speciation is "the formation of new and distinct species in the course of evolution." Because a new a distinct species is formed, even if not physically isolated, they can not interbreed because two species can not reproduce with each other. Therefore, the answer is Reproductive isolation, because speciation will still occur even without physical isolation.
In order for speciation to occur organisms can no longer interbreed This is known as Reproductive isolation.
What is reproductive isolation ?
The inability of a species to breed successfully with related species due to geographical, behavioral, physiological, or genetic barriers or differences.
What is reproductive isolation give an example?An example of reproductive isolation is in changes of bird song from different species of finch of the Galapagos island.
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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:
answer is A
Explanation:
it is because in mitosis , the cell divides it self into two daughter cells as it is asexual
in binary fission the cell divides into two daughter cells. so both ways are similar
Answer: A. They produce identical daughter cells.
Mitosis and binary fission are similar because they produce identical daughter cells.
Explanation:
Binary fission is an asexual reproductive method found in organisms like hydra. The offspring produced by binary fission are identical to the parent. Mitosis is similar to binary fission in this respect.
Mitosis and meosis occur in eukaryotic cells. Mitosis produces only two daughter cells which are identical while meosis produces four daughter cells and they need not be identical.
It is meosis that takes place in reproductive cells and mitosis that takes place in somatic cells. Diploid daughter cells are produced by mitosis and haploid daughter cells are produced by meosis.
Which of the following are limits of reductionism when applied to living systems?
Answer:
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.
Explanation:
.hevdueveieveyegeueveudrvhrh
What is true about liquid water?
A. Ice has a higher density then liquid water because it has less space between molecules
B. Ice has a lower density then liquid water because it has more space between molecules
C. Ice has a lower density then liquid water because it has less space between molecules
D. Ice has a higher density than liquid water because it has more space between molecules
Answer:B. Ice has a lower density then liquid water because it has more space between molecules
Explanation:apex
Is true about liquid water is Ice has a lower density then liquid water because it has more space between molecules.
How to explain density?Density is the ratio between the mass of a material and its volume (d = m/V) at a given temperature and pressure.
The density of liquid water is 1.0 g/cm3, while that of ice is 0.92 g/cm3. Therefore, in the glass in which there is water, the ice floats. Note that the ice is not entirely above the water's surface, but most of it is submerged.
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i eat only plants. iam a(n)______
Answer:
Herbivore.
Explanation:
Herbivores only eat plants, while carnivores only eat meat.
Answer:
herbivore because they only eat plants
Blood is a mixture of a variety of materials. Some of the materials are dissolved in the fluid portion of blood. Other materials, such as blood cells, do not dissolve but move along with the blood.
For these reasons, blood is an example of which type of mixture?
A. a solvent
B. a solution
C. a suspension
D. a buffer
Answer:
Explanation:
I don't know exactly, but I think it is a suspension because of all the macromolecules and other things in the blood. It could also be a solution because blood dissolves things like salt, minerals, vitamins, and lots of other things. I would pick one of those two.
Answer:
The correct answer is C. a suspension
Explanation:
Suspension is a mixture of solute and solvent in which the solute particles do not mix with solvent and get pellet down if left undisturbed.
So in the case of blood, blood cells do not dissolve in it and these cells settle down when left undisturbed for some time. Salts, proteins, and serum also settles down with blood cells.
But blood is a mixture with quality of all three medium solution, colloid, and suspension so it is hard to say that blood is only suspension. Colloidal suspension is another word that is widely used for blood.
Tim wants to perform an experiment with yeast. He forms a hypothesis in which he predicts that all of the yeast will eventually die. Would this be a good experiment?
A. Yes, because it involves living things and you can observe what happens to the bacteria.
B. No, because the hypothesis is not falsifiable since all living things eventually die anyhow.
C. Yes, because you could test a lot of different ways the bacteria could die.
D. No, because he does not explain what the results of the experiment are
The experiment performed by Tim is not considered a good experiment. This is because he does not explain the results of the experiment along with the die-off of yeast. Thus, the correct option for this question is D.
What is a Hypothesis?A hypothesis may be defined as a type of testable declaration that significantly deals with the relationship between two or more variables in order to propose an explanation for some sort of observed phenomenon.
Every hypothesis must be terminated with a valid and accurate conclusion with respect to the clear result and outcome. Until this is not achieved, an experiment will not be considered good or valid.
So, according to Tim's experimental hypothesis, all of the yeast will eventually die but he does not illustrate the result behind the same.
Therefore, the experiment performed by Tim is not considered a good experiment. This is because he does not explain the results of the experiment along with the die-off of yeast. Thus, the correct option for this question is D.
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What is C. difficile’s role in disease? Detailed answer.
Role of C. difficile in disease:
Clostridium difficiles are anaerobic, spore-forming, and Gram-positive bacteria that produce two exo-toxins: toxin A and B. This is a very common symptoms of Antibiotic-Associated Diarrhea (AAD).
Patients with C. difficiles feces spores, without strict precautions, the spores accidentally fall into the hands, kitchen utensils and food.
Then, these are swallowed by another person. The spores live in the second person's human digestive tract, but in normal conditions bacteria control C. difficiles and the disease does not develop.
But if "good" GI bacteria are eliminated with antibiotics, C. difficiles reproduction and growth produce toxins that damage the intestinal mucosa. It causes diarrhea, inflammation, and sometimes loss in appetite.
Since crayfish eat dead perch and frogs but do not kill them they are
Final answer:
Crayfish that eat dead perch and frogs without killing them are classified as scavengers, which consume decaying organic material and aid in recycling nutrients.
Explanation:
Since crayfish eat dead perch and frogs but do not kill them, they are considered scavengers. Scavengers are animals that consume dead organisms that they did not kill themselves. In an ecosystem, scavengers play a crucial role by helping to clean up dead material and recycle nutrients back into the environment. Unlike predators, which hunt and kill their prey, scavengers take advantage of what is already deceased, thereby preventing the spread of disease and contributing to the decomposition process.
What is a difference between prokaryotic and eukaryotic cells? A. Prokaryotic cells do not have a nucleus, but eukaryotic cells do. B. Prokaryotic cells always have cell walls, but eukaryotic cells do not. C. Eukaryotic cells do not have membrane-bound organelles, but prokaryotic cells do. D. Organisms with eukaryotic cells are always multicellular, but organisms with prokaryotic cells are not.
Answer:
The correct answer is A
Explanation:
Eukaryotic cells have a nucleus containing their DNA, whereas prokaryotic cells do not have a nucleus.
Answer:
The Correct Answer is A
Explanation:
Numerous variations are connecting the two, but the most significant characteristic connecting them signifies that eukaryotic organisms have a distinguished nucleus comprising the cell's hereditary matter, while prokaryotic organisms don't have a nucleus and have free hovering hereditary matter rather.
Which situation would be most effectively shown by a conceptual model?
a model showing the organs in the human body
the flow of matter and energy through an ecosystem
the shape of a large molecule
the relationship between temperature and volume for gases
OPTION B.
A conceptual model is most effectively used to show the flow of matter and energy through an ecosystem, highlighting interactions and energy transfers between organisms.
Explanation:The situation that would be most effectively shown by a conceptual model is the flow of matter and energy through an ecosystem. Conceptual models are incredibly useful for demonstrating ecosystem structure and dynamics, which includes the relationships and transfers of energy or nutrients between different organisms and their environment. This often takes the form of flow charts or compartment models that graphically depict these interactions, and they are particularly important for understanding and managing the maintenance of ecosystem health.
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The most effectively shown situation by a conceptual model is B) 'the flow of matter and energy through an ecosystem.'
Conceptual models are particularly useful for showing relationships and interactions within a system. They often utilize flow charts to depict the relationships between different parts of an ecosystem and the transfer of energy or nutrients between them. This is because a conceptual model can clearly illustrate how energy and matter move through various trophic levels and compartments within an ecosystem.
Here are the options:
Model showing the organs in the human body: This would be better represented using a physical model or a detailed anatomical diagram rather than a conceptual model.Flow of matter and energy through an ecosystem: Conceptual models are particularly useful for depicting these kinds of relationships and dynamics. They can show how energy is transferred from one trophic level to another and how matter cycles through different parts of the ecosystem.Shape of a large molecule: The shape of molecules is typically represented using molecular models or structural formulas, not conceptual models.The relationship between temperature and volume for gases: This relationship is best described using mathematical equations and graphs, such as the ideal gas law, rather than a conceptual model.what is chyclomicrons?
Answer:
Chyclomicrons is a little fat globule made out of protein and lipid.
Explanation:
It is found in the blood and lymphatic liquid where they circle fat from its port of passage was given in the digestive tract to the Liver and fat tissue. When we take a greasy dinner the blood is satisfied with chyclomicrons.
It looks so smooth. The CM leeway rate is quick, the half-life is 10 minutes, and the ordinary human can not be recognized following 12 hours on fasting.
a controlled experiment you could perform to determine whether ants are more attracted to butter or honey
Place equal amounts of butter and honey on identical plates, observe ant attraction, and compare results to determine preference.
To determine whether ants are more attracted to butter or honey, follow this controlled experiment:
Materials
- Two identical containers or plates.
- Butter and honey.
- A fixed number of ants (e.g., from an ant farm).
- Stopwatch or timer.
- Controlled environment (same temperature, light).
Procedure
- Place equal amounts of butter on one plate and honey on another.
- Position both plates at equal distances from the ant colony.
- Release the same number of ants at a central point, equidistant from both plates.
- Observe and record the number of ants on each plate every 5 minutes for 30 minutes.
Controls
- Ensure plates are identical in size and shape.
- Keep environmental conditions consistent.
- Use equal quantities of butter and honey.
Analysis
- Compare the number of ants on each substance.
- Determine which attracted more ants based on the data.
Conclusion
- The substance with more ants indicates higher attraction. Repeat trials for reliability.
Complete question
Describe a controlled experiment you could perform to determine whether ants are more attracted to butter or to honey.
________ was an Austrian monk in the 1800’s who studied inheritance of traits by growing thousands of __________.