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ryzh [129]
3 years ago
9

Which of the following situations would most likely lead to a stable

Biology
1 answer:
zlopas [31]3 years ago
6 0

Answer:

C. The rates of birth and immigration were balanced by the rates of  death and emigration .

Explanation:

A stable population size means that, over the years, number of individuals doesn't change significantly. This condition is only possible when the birth rate and immigration rate is balanced with the death rate and emigration rate. In this scenario, population size would not change much.

On the other hand, if a birth rate and immigration rate will increase, the population size in any area would be increased. This typically happens in growing cities. By contrast, if death rate and emigration rate increases, the size of population will decrease. This happens mostly in rural areas.

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What are the reasons for the several day delay in a primary response. Infection______. A. transport to secondary lymphoid tissue
Liula [17]

Answer:

The correct answer is D. proliferation and differentiation.

Explanation:

Primary immune response occurs due to the first exposure of an antigen to the immune system. The primary immune response is generally delayed by many days because it takes time for B and T cells to become cloned and to proliferate and differentiate.

Then after several days of proliferation and differentiation of activated T and B cells, T cells become effector T cells and B cell becomes plasma cells which then eliminates the antigen. Memory B and T cells are also produced during this process which helps in generating a quick immune response during the second and subsequent exposure of that antigen.

So the correct answer is D. proliferation and differentiation.

7 0
2 years ago
Is this organelle more likely to be found in animal cells or plant cells
Anna007 [38]
More likely to be found in plant cells
7 0
2 years ago
Read 2 more answers
An adult female client describes the pain in her hand as having an audible grinding and cracking sound, especially in her thumb
slamgirl [31]

Answer: The correct answer to the question is option C

OSTEOARTHRITIS.

The client has a degenerative form of disease that is evidenced by osteoarthritis.

Explanation: Osteoporosis is otherwise known as degenerative joint disease.

In a healthy joint,a protective cartilage cushions the end of bones(articulating bones) and as well acting as a shock absorber.

In osteoarthritis,these cartilage that acts as a cushion to the bones wears down down or generates with time exposing the joint and the bones predisposing them to mild to moderate friction that occurs as a result of mobility of the bones/joint.

Osteoarthritis mostly affect joints of the hips, hands,spine and knees.

Some of the common symptoms of Osteoarthritis are;pain in the joints of the hands,knees,hips,lower back and neck with crackles,stiffness and tenderness of the joints which often results to difficulty in walking and deformity of the joint if left untreated.

7 0
3 years ago
100 points and brainliest!!
Savatey [412]

Answer:

owo i tried

Explanation:

B.

C.

need the attachment

still need the attachment

A.

D.

i dont remebr

A.

A.

C.

srry if im wrong!

3 0
3 years ago
Two protein kinases, K1 and K2, function sequentially in an intracellular signaling pathway. If either kinase contains a mutatio
Korolek [52]

Answer:

The order must be K2→K1, since the permanently active K1 allele (K1a) is able to propagate the signal onward even when its upstream activator K2 is inactive (K2i). The reverse order would have resulted in a failure to signal (K1a→K2i), since the permanently active K1a kinase would be attempting to activate a dead K2i kinase.

Explanation:

  • You characterize a double mutant cell that contains K2 with type I mutation and K1 with type II mutation.
  • You observe that the response is seen even when no extracellular signal is provided.
  • In the normal pathway, i f K1 activat es K2, we expect t his combinat ion of two m utants to show no  response with or without ext racell ular signal. This is because no matt er how active K1 i s, it would be unable to  act ivate a mutant K2 that i s an activit y defi cient. If we reverse the order, K2 activating K1, the above  observati on is valid. Therefore, in the normal signaling pathway, K2 activates K1.
7 0
3 years ago
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