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Kobotan [32]
3 years ago
6

A secondary immune response occurs when an antigen is encountered on a second occasion, due to exposure to a pathogen that previ

ously caused infection. Which property of some viruses explains the lack of a secondary immune response?
A. Viruses fail to induce a primary response.
B. Viruses can have a high mutation rate.
C. B cells do not interact with viruses.
D. Antibodies cannot interact with viruses.
Biology
1 answer:
skad [1K]3 years ago
7 0

Answer:

B

Explanation:

Our bodies can produce antibodies against viruses when they're in the interstitium before they invade our cells. They induce a complete primary response with memory cell production.

And the biggest evidence is that if a person gets chicken pox (Varcilla), it's not likely that they'll ever get it again.

Now why isn't that so for all viruses? Why is it that we keep getting flu?

Not all viruses are like the Varcilla with stable genetic makeup. Many viruses keep changing their antigens so that even if the immune system produced antibodies against a certain strain with a certain antigen, it won't recognize a different, mutated strain.

Viruses can evade our immunological memory in this way.

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Therefore,when carbon monoxide is present,it blind to hemoglobin preferentially over oxygn.As a result,oxygen cannot blind to hemoglobin ,so very little oxygen is transported through the body carbon monoxide is a colorless odorless gas and is therefore difficult detect.

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2 years ago
Increasing the number of stomata per unit surface area of a leaf when atmospheric carbon dioxide levels decline is most analogou
Liono4ka [1.6K]

Increasing the number of stomata per unit surface area of a leaf when atmospheric carbon dioxide levels decline is most analogous to a human

B. putting more red blood cells into circulation when atmospheric oxygen levels decline.

<h3>What are stomata?</h3>

The stomata are apertures in the epidermis, each bounded by two guard cells. There are small openings on the lower surface of the leaves. These pores are called stomata. Loss of water from the stomata creates an upward pull, that is suction pull, which helps in the absorption of water from the roots. That is helpful for the transpiration process. They help in exchange for gases. Any of the tiny pores or openings in the epidermis of leaves and young stems are referred to as a stomate, sometimes known as a stoma, the plural of which is stoma or stomas. On the underside of the leaves, stomata tend to be more numerous. They enable the exchange of gases between the atmosphere outside and the leaf's branching network of interconnected air canals.

To learn more about  stomata, Visit;

brainly.com/question/28212270

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8 0
2 years ago
True or false scientists are certain that human beings cause global warming and climate change​
kiruha [24]

Answer:

yes not just scientists but everyone! all the wars and battles thats happening and pollution and lack of nature are all causing global warming and climate change.

so ur answer is true!

~batmans wife dun dun dun....

7 0
3 years ago
Many signaling pathways have multiple transducer proteins, for example in a multi-enzyme phosphorylation cascade - one of the pu
zimovet [89]

Answer:

b. to amplify the signal

Explanation:

A multi-enzyme phosphorylation cascade is a series of signaling events where one enzyme phosphorylates to another, then this last enzyme acts to phosphorylate another protein and so successively, thereby triggering a chain reaction that leads to the phosphorylation of hundreds or even thousands of proteins. A multi-enzyme phosphorylation cascade is known to increase the number of activated (phosphorylated) proteins at each step of the signaling cascade. Phosphorylation is a posttranslational modification capable of activating proteins during long periods, thereby a phosphorylation cascade also enables the activation of multiple proteins before these proteins become inactive again.

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3 years ago
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