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malfutka [58]
3 years ago
7

What do you think the organism is

Biology
2 answers:
I am Lyosha [343]3 years ago
6 0

Can you elaborate on the question you have provided here

padilas [110]3 years ago
3 0

Answer:

Kinda confused by the question but if you're asking what an organism is than..

Explanation:

it is "an individual animal, plant, or single-celled life form." -Google Definition

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Answer:

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A) How does HIV bind to a host cell?
Taya2010 [7]

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Binding and entering the host cell are the first steps of the HIV virus infection. So, these steps play a major role in determining the ability of HIV to degrade the human immune system. Binding of HIV to CD4+ T lymphocytes (express chemokine receptors CCR5 and CXCR4 called co-receptors) triggers the fusion of the viral and host cell membranes, initiating infection (viral core gets into the cytoplasm).

Attachment of the virion can be:

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• Specific-Env binds to integrin.

2. The correct answer is: Activation of the host cell by cytokines, growth factors, or antigens.

After the viral capsid enters the cell, single-stranded RNA genome is released from the attached viral proteins and copied it into a complementary DNA (cDNA) molecule thanks to an enzyme called reverse transcriptase. Next step is the integration of the viral DNA into the host cell's genome. This process is done by another viral enzyme called integrase. The integrated DNA  is transcribed into RNA and then translated into proteins that will help the package of new viruse particles.

3. The answer is: false

Reverse transcriptase is an enzyme that catalyzes the formation of DNA from an RNA template. Since the genome of the virus (HIV) is single stranded RNA, reverse transcriptase copies it into a complementary DNA (cDNA) molecule. Thanks to this enzyme, formed cDNA can be integrated into host’s genome. Because of this proprety, antiretroviral drugs used to treat HIV infection work as reverse-transcriptase inhibitors.

7 0
3 years ago
BRAINLIESTTT ASAP!!!!<br><br> Does distance from the sun affect seasons? Why or why not?
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hope this makes sense if not just message me and ill try to put it in a more understanding way :)

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Answer:

B

Explanation:

The correct answer is option B

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