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Elena-2011 [213]
3 years ago
13

Which is the primary advantage of instincts, such as the tendency of a mother bear to attack anything between herself and her cu

bs? A) They improve survival rates. B) They reduce predator contacts. C) They improve food selection choices. D) They allow for smaller brains and less wasted energy.
Biology
2 answers:
Kitty [74]3 years ago
4 0
B.) They reduce predator contacts.
Reika [66]3 years ago
3 0

Answer: answer is a

Explanation: i just did the usa test prep

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Memory cells may take the form of B cells. T cytotoxic cells. T helper cells. All of the choices are correct.
topjm [15]

Answer:

Having considered how an appropriate primary immune response is mounted to pathogens in both the peripheral lymphoid system and the mucosa-associated lymphoid tissues, we now turn to immunological memory, which is a feature of both compartments. Perhaps the most important consequence of an adaptive immune response is the establishment of a state of immunological memory. Immunological memory is the ability of the immune system to respond more rapidly and effectively to pathogens that have been encountered previously, and reflects the preexistence of a clonally expanded population of antigen-specific lymphocytes. Memory responses, which are called secondary, tertiary, and so on, depending on the number of exposures to antigen, also differ qualitatively from primary responses. This is particularly clear in the case of the antibody response, where the characteristics of antibodies produced in secondary and subsequent responses are distinct from those produced in the primary response to the same antigen. Memory T-cell responses have been harder to study, but can also be distinguished from the responses of naive or effector T cells. The principal focus of this section will be the altered character of memory responses, although we will also discuss emerging explanations of how immunological memory persists after exposure to antigen. A long-standing debate about whether specific memory is maintained by distinct populations of long-lived memory cells that can persist without residual antigen, or by lymphocytes that are under perpetual stimulation by residual antigen, appears to have been settled in favor of the former hypothesis.

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2 years ago
Which base is normally used in the synthesis (making) of RNA but not in the synthesis (making) of DNA?
Sphinxa [80]

Uracil......... Is the answer i could find.

:3

7 0
3 years ago
Which of the following monomers are correctly matched with their polymers
Marat540 [252]
I think it's A....hope that helps at least
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3 years ago
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Select the correct answer.
Aliun [14]

Answer: C. regulates spatial and artistic skills

The right side of the brain controls the left side of the body. A right hemisphere dominant person excels in arts. It is visual and intuitive. It is also called the analog brain.

Explanation:

Each hemisphere of the brain is dominant for other behaviors. For example, it appears that the right brain is dominant for spatial abilities, face recognition, visual imagery and music. The left brain may be more dominant for calculations, math and logical abilities.

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2 years ago
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The measurement of the amount of water vapor in the air called
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Humidity. I think you need to work on your grammar a little bit pal, if you ever need help with ELA homework, hmu.
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3 years ago
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