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11Alexandr11 [23.1K]
2 years ago
5

What is the importance of DNA replication to all living organisms?

Biology
1 answer:
Semmy [17]2 years ago
4 0

Answer:

B. DNA replication determines which genes are active

Explanation:

DNA replication is important in all organisms to stop the meiosis and mitosis from killing the cells. If DNA replication is done, the process can be stopped from occurring. The DNA doubles itself to quantify the cells splitting during the mitosis or meiosis. The DNA replication is similar to RNA transcription.

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What is the density of a 75 g cube measuring 4 cm on each side
Tema [17]
D = m/V

m = 75g

V = 4 x 4 x 4 = 64 cm^3

d = 75/64 = 1 11/64 g/cm^3

5 0
3 years ago
According to slide 12, what is the relationship between opportunistic infections and the number of T cells a person has? Explain
podryga [215]

Answer:

The fewer number of T cells a person has, the more chances to be affected by an opportunistic infection. When the number of T cells reaches 200 cells/µl, the person is at risk of being infected by other infections.  

Explanation:

The whole immune system of a person who is infected with HIV infection seems to be severely affected.  When the person is not treated or the disease is in a very advanced stage, the depletion of the T- cells turns to be very sharped, especially CD4+ T cells. At this point, the immune system can not resist the attack of other microorganisms. The <em>lower is the number of CD4+ T Cells, the higher possibility the person has to be attacked by opportunistic infections. </em>

Classically, it has been suggested that opportunistic infections appear after the CD4 + T lymphocytes reach very low levels, such as 200 cells/µl. The number of circulating T cells can be used as an indicator and a measure of global "immune competence", and the previously mentioned amount of CD4 + T cells is an accepted universal reference used to predict the risk of having one of these opportunistic infections.

8 0
3 years ago
Phosphorus is very important for living things because living organisms need phosphorus for what?
Lemur [1.5K]
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4 0
2 years ago
Answerr these questions please!!! will mark brainliest. They are simple
aleksklad [387]
What’s the question?
7 0
2 years ago
PLEASE BE QUICK!! I’M TIMED!!
Firlakuza [10]

Answer: i thi

Explanation:

4 0
2 years ago
Read 2 more answers
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