Answer:
1 and 6 are correct
Explanation:
1. A and B are probably closely related - true, as reflected by their close gene sequences which usually represents a very close genetic relationship
2. B and C are probably closely related - false, if their gene sequences are very different then they are probably not so closely related
3. A and C are probably closely related - false, we know A and B are close, and B and C are very different, therefore A is probably also very different
4. B is probably an outgroup while A and C are sister taxa - false, A and B are highly similar
5. A is probably an outgroup while B and C are sister taxa - false, B and C are very different genetically
6. C is probably an outgroup while A and B are sister taxa - true, we know A and B share similar gene sequences, whereas C is distinct.
How does the immune system
produce memory cells for antigens?
This is the BEST research
question for students to ask if they are conducting research on antibodies
because t<span>he answer to this question must tell about
production of B-cells, recognition of antigen, T-helper cells, colony formation,
and phagocytosis of foreign antigen, T-killer cells, and all other details which
is possible.</span>
Answer:
A. These homologous structures indicate that these four organisms all share a common ancestor.
Explanation:
Homologous structures mean the organs will have similar structure, but not necessarily function (human arm vs whale's flipper). While analogous structures are similar in function but not structure (wings of an airplane vs wings of a bird). Since the question states that they are similar in skeletal structure, we know they must be homologous structures, thereby eliminating B and C. D is not a choice because the question does not provide anything about the order of evolution. Therefore the answer is A. These homologous structures indicate that these four organisms all share a common ancestor.
Answer:
8)
Potential Explosions
Radiation
Radioactive Waste
9)
1st option
10)
Nuclear Fission is not a good source of energy. This is by reason of only 0.7% of the uranium being captured. This is small even if one doesn't mention that only 40% of that 0.7% is converted into usable energy. There are also chances that the power plant could explode during conversion. All of this evidence points to the fact that Nuclear Fission and Nuclear Energy themselves should not be relied on.
11)
Sun and Stars
7)
Uranium and Plutonium
Fungi were classified in the kingdom Plantae because they are
sedentary. I am hoping that this answer has satisfied your query
and it will be able to help you in your endeavor, and if you would like, feel
free to ask another question.
