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kap26 [50]
3 years ago
5

A child was exposed to a disease-causing virus (most likely chicken pox from the Varicella zoster virus) when he was 5 years old

. At 12 years old, the child encounters the same virus again. What is most likely expected to happen?
Biology
1 answer:
STatiana [176]3 years ago
8 0

Answer: What is expected to happen is that the secondary immune system acts immediately against the virus.

Explanation:

When a virus first enters our body, in order to defend itself, the body must first recognize what the antigen is in order to fight it through <u>antibodies</u>. Once it does it will keep a memory of it that it can use if this virus enters the body again. <u>This will be done through the secondary immune system</u>.

As the body already recognizes the antigen, it knows how to fight it immediately, generating a thousand times the amount of antibodies generated the first time.

Thanks to its memory cells, the virus will remain much less time in the body.

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Martha has a widow's peak (dominant trait) and attached earlobes (recessive trait). Martha's dad had a straight hairline and una
Readme [11.4K]

Answer:

3/8

Explanation:

Martha has a widow's peak (dominant trait) and attached earlobes (recessive trait).

Martha's dad had a straight hairline (ww) and unattached earlobes (Ee, because she has the recessive alleles ee and both parents give us one allele).

This tells you that martha has a mother with at least one of both alleles dominant for widow peak and at least one recesive allele of attached earlobes

So, martha's alleles are: Ww and ee.

If she marries a man that is heterozygous for both traits (Ww and Ee) the probabilitys are

Ww Ee x Ww ee: WWEe, WwEe, wWee, and wwee

8 0
2 years ago
When a cell uses chemical energy to perform work, it uses the energy released from a(n) ________ reaction to drive a(n) ________
Lorico [155]

Answer: EXERGONIC; ENDERGONIC

Explanation:

An Exergonic reaction is one that occurs spontaneously, with the release of high amount of energy usually in form of ATP. a good example of this is the oxidation of glucose (glycolysis) in the Human body.

Whereas an energetic reaction is one that will ONLY occur in the supply of energy. A good example is biosynthethic reaction such as

- formation of glycogen (glycogenesis)

- formation of lipids etc

3 0
3 years ago
Unlike reptiles and amphibians, birds generate their own body heat, what does this mean for birds?​
ioda

Answer:

Birds can keep themselves warn without any external heat source which is not the case with reptiles and amphibians

Explanation:

Birds are able to generate heat means they are endothermic. They generate heat through various metabolic processes.  They have air pockets beneath their feathers to insulate their bodies during cold temperatures. Feathers which are modified reptilian scales help birds to streamline their exterior body and structure feathers in a way that it insulates the body.

8 0
2 years ago
The direction air tends to move is from
sleet_krkn [62]

Answer:

The air tends to move from high pressure to low pressure

7 0
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Does endoplasmic reticulum play a part in cell division
stich3 [128]
ER membranes flow to Golgi through ERGICs and get fragmented into small vesicles. When the cell divides, those vesicles within the daughter cells reassemble Golgi and ER to resume membrane traffic
7 0
2 years ago
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