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densk [106]
3 years ago
15

Which changes take place in the immune system of a person who is infected with hiv, and how might that infection develop into ai

ds
Biology
1 answer:
solniwko [45]3 years ago
6 0
Well a person with HIV would only have AIDS if he/she has really low number of CD4 cells if this is the case that is when doctors would diagnose that person with AIDS. Hope I helped
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The only difference in the chemical<br> structure of DNA between various organisms is
Alchen [17]

Answer:

the backbone of DNA contains deoxyribose, where as the backbone of RNA contains ribose.

Explanation:

6 0
2 years ago
Why the membrane potential is negative, if there is a higher concentration of positive ions inside the cell than outside (counte
Nina [5.8K]

Answer:

Net membrane potential is equal to the difference of positive charge and negative charge existing at the inner and outer side of the cell respectively. Since outer negative charge is higher in concentration, the net membrane potential is negative

Explanation:

The cell membrane potential defined as the net difference of ion concentration existing at the inner and outer side of a cell membrane at nay instance.  

When the cell is at the resting potential, the positive potassium ion starts accumulating at the inner surface of the cell membrane as it becomes favors positive potassium ion. This leads to development of negative potential at the outer side of cell membrane by the accumulation of negative ions or charges. Hence, a net negative potential membrane develops.

3 0
3 years ago
Compare clonal selection to a phosphorylation cascade that occurs in a signal transduction pathway. How are they similar to one
dybincka [34]
<h2>Clonal Selection to a Phosphorylation Cascade </h2>

Clonal selection describes the roles of compartments of the privileged operation in reply to specific antigens attacking the basis in immunology. A phosphorylation cascade is a series of situations wherever one catalyst phosphorylates is different. It makes a succession reactions driving the phosphorylation of thousands of proteins. This can be observed in omen transduction of hormone communications.


4 0
3 years ago
PLLLZ HELP Which point on the timeline best indicates the time when birds first appeared?
Vedmedyk [2.9K]

Answer:

The answer should be C

Explanation:

If you look at the the graph, C points to the time period after mammals appeared. Since birds are mammals, they should have appeared after the time that mammals first came to be on Earth.

Hope this answer helps you! Please rate it and mark it Brainliest!

3 0
3 years ago
From may to september, the worst time of day for pollution is during what hours?
SCORPION-xisa [38]
3:00 -7:00 PM

This is the span of the time wherein most commuters travel and industrial factories produce emissions. 
6 0
3 years ago
Read 2 more answers
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