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polet [3.4K]
3 years ago
13

Why is a second blood test necessary three months after a person thinks he or she has been exposed to hiv?

Biology
2 answers:
stepan [7]3 years ago
7 0
It takes 3 months for antibodies
Elza [17]3 years ago
6 0
The antibodies to the HIV virus may take up to three months to appear in the blood of the infected person. 
Therefore, the second blood test is necessary three months after a person thinks that he/she has been exposed to HIV to check the presence of these antibodies and confirm whether the person is infected or not.
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H
vazorg [7]

Answer:

I don't know the question u are trying to say

7 0
3 years ago
what is the subdivision of the peripheral nervous system that connects to sensory receptors and to skeletal muscles called
vampirchik [111]

Answer:

The somatic nervous system

Explanation:

The peripheral nervous system is categorized into two types: the autonomic and somatic nervous system.

The somatic nervous system controls the voluntary actions of the boys so is also known as the voluntary nervous system and the voluntary system involves the skeletal muscles therefore is also known as the skeletal nervous system.

The skeletal nervous system contains two types of neurons called the afferent neurons which carries the sensory input from the muscle to the CNS ans the efferent neurons which brings the impulse from the CNS to the muscles.

Thus, the somatic nervous system is the correct answer.

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3 years ago
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MrRissso [65]
<span>The correct answer is Mitochondria. That's why it is said that the mitochondria is the powerhouse of the cell. Cellular respiration is a process in which the mitochondria converts nutrients from food into energy created in the form of ATP and ADP. This energy is then transfered to wherever you need it to have a proper metabolism and keep your bodily functions normal.</span>
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3 years ago
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iren2701 [21]
A metamorphic rock is a type of rock which has been changed by extreme heat and pressure.  so must be option D
8 0
3 years ago
Ionic bonds involve _______, while covalent bonds involve _______.
lesya [120]
Ionic bonds involve the gaining and losing of valence electrons between atoms, while covalent bonds involve the sharing of valence electrons between atoms
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