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san4es73 [151]
3 years ago
5

When is S-phase complete?

Biology
1 answer:
Lina20 [59]3 years ago
5 0

Answer:

D. when each chromosome is duplicated

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What are forms of cell regulation
Naddik [55]

Answer:

Hi!

Question :What are forms of cell regulation

Answer: Regulator Molecules of the Cell Cycle. In addition to the internally controlled checkpoints, there are two groups of intracellular molecules that regulate the cell cycle. These regulatory molecules either promote progress of the cell to the next phase (positive regulation) or halt the cycle (negative regulation).

Remember: Any process that controls the series of events by which a cell goes through the cell cycle. During the cell cycle, a cell makes a copy of its DNA and other contents, and divides in two.

4 0
3 years ago
Living organisms maintain a constant internal environment by sensing and responding to their internal conditions. this stable ma
Lelechka [254]
The answer to this question is Homeostasis <span />
3 0
3 years ago
There are many routes of administration that can deliver drugs directly to the developing fetus. The direct fetal routes of drug
rjkz [21]

Answer:

The correct answer is option - 1. If passage through the placenta is adversely affected by fetal disease. and 4. If rapid drug effects are required.

Explanation:

Normally the drug that is provided and administrated to the fetal is through the placenta of the mother. The direct delivery of medicine can be dangerous. However, with the advancement of the medical technology direct fetal drug administration is possible and it assists in the rapid uptake of the drug by the fetus.

If the fetus requires a rapid drug effect it can be provided by direct drug delivery. Also when the placental is not working properly and affected by the disease it is recommended to provide the fetus with the drug with the help of direct delivery.

Thus, the correct answer is : 1. If passage through the placenta is adversely affected by fetal disease. and 4. If rapid drug effects are required.

3 0
3 years ago
1 pts
WARRIOR [948]

Answer:

I'm pretty sure the answer is natural selection.

Explanation:

Natural selection acts on phenotypic variations in populations.

5 0
3 years ago
Hemoglobin is a complex protein that contains four polypeptide chains. The normal hemoglobin found in adults, called adult hemog
AlekseyPX

Answer:

GUA and GUG.

Explanation:

If you look at the attached genetic code, the wild-type glutamic acid (Glu) is coded by the codons GAA and GAG.

Valine (Val) can be coded by the codons GUU, GUC, GUA or GUG.

Sickle-cell hemoglobin arises from a single mutation, which causes the translation of Val instead of Glu. The only codons that code for Valine that differ in just one base with the Glu codons are GUA and GUG.

7 0
3 years ago
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