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Natalija [7]
3 years ago
13

20 POINTS!! How does a DNA molecule make a copy of itself?

Biology
2 answers:
SSSSS [86.1K]3 years ago
5 0

The two strands of a DNA molecule have complementary base pairs, the nucleotide sequence of each strand automatically supplies the information needed to produce its partner.

Musya8 [376]3 years ago
4 0

When chromosomes are duplicated before mitosis, the amount of DNA in the nucleus is doubled?

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Why is 2 the correct answer to number 16 ? Explain why please and answer this !!
marta [7]

an egg cell has a haploid nucleus so it has half the number of dna because it fuses with a sperm cell to have the full amount of dna.

an egg cell has 23 chromosomes and a sperm cell has 23 chromosomes.

they both have half the amount of dna to form a zygote

5 0
2 years ago
What is the process of glacier development and growth called?
zhuklara [117]

Answer:

glacial till

Explanation:

hope that helps you out mate!! good luck!!

4 0
3 years ago
Read 2 more answers
_________ is a network of flattened membrane sacs and the small, round membrane-coated vesicles that arise from them. the smooth
alexgriva [62]
The organelle described above is called the endoplasmic reticulum.
The rough portion of this called the granulated endoplasmic reticulum and the ribosomes attached to it enable it to produce proteins.
The smooth portion of this organelle does not contain ribosomes and it has a role in the synthesis of lipids. 
3 0
2 years ago
Ricardo Richardson works in environmental services for a local hospital. He is being evaluated in your clinic for possible HIV e
shusha [124]

Answer: A. Zidovudine​ (Retrovir) and emtricitabine​ (Emtriva)

Explanation:

Basic postexposure prophylaxis​ (PEP) therapy typically includes treatment with one of these combinations of pharmacologic​ agents:

Zidovudine​ (Retrovir) and emtricitabine​ Emtriva),

Lamivudine​ (Epivir) and tenofovir​ (Viread), or

Tenofovir​ (Viread) and emtricitabine​ (Emtriva)

If the accidental exposure is especially​ severe, a third agent may be included.

8 0
3 years ago
The chart shows shared characteristics of three kinds of plants. Which is supported by the information in the chart?
Alinara [238K]

Answer:

b. All three plants have a common ancestor that had leaves.

Explanation:

7 0
3 years ago
Read 2 more answers
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