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victus00 [196]
3 years ago
10

3TC is an antiretroviral treatment used to prevent HIV infection from becoming AIDS. After treatment with 3TC, the HIV populatio

n in a patient consists entirely of 3TC-resistant virus particles. What best explain this phenomenon? A) HIV can change its surface proteins through mutations and resist vaccines. B) The patient became re-infected with 3TC-resistant viruses after the initial exposure. C) The drug caused RNA changes to occur, creating a resistance to the once-applicable drug. D) A few drug-resistant viruses were present at the start of treatment and selective pressures increased their frequency.
Biology
1 answer:
Alexxandr [17]3 years ago
5 0

Answer:

D

Explanation:

3TC is an antiretroviral treatment used to prevent HIV infection from becoming AIDS. After treatment with 3TC, the HIV population in a patient consists entirely of 3TC-resistant virus particles. What best explain this phenomenon?

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Answer:

A. homologous structures

Explanation:

The answer is homologous structures.

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The urinary bladder is composed of ________ epithelium. A) transitional B) simple squamous C) stratified squamous D) pseudostrat
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The urinary bladder is composed of transistional epithelium.

<h3>What is Urinary bladder?.</h3>

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The transitional epithelium contain multiple cells that changes shapes.

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Ket [755]
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3 years ago
Predict how an ecosystem would respond if either its producers or decomposers were removed.
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What is the difference between an endoskeleton and a exoskeleton? What types of animals have each?
dsp73

Answer:

an endoskeleton is a skeleton on the inside of a living creature. look at endo like enter, its on the inside! an exoskeleton is on the outside of a living creature. think of exo as exit, its on the outside! animals with endoskeletons are like dogs, cats, fish, and raccoons. animals with exoskeletons are like spiders, ants, crabs, and snails.

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