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mafiozo [28]
3 years ago
13

What factors do you think determine the age of the universe

Biology
1 answer:
Nadya [2.5K]3 years ago
4 0
The trees being so tall, eruption on rocks shows that the earth has aged, and weathering. Because scientists can track down years from these things listed
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3. Explain the main difference between organisms of the
Mice21 [21]

Answer:

Both Bacteria and Archaea are prokaryotes, single-celled microorganisms with no nuclei, and Eukarya includes us and all other animals, plants, fungi, and single-celled protists – all organisms whose cells have nuclei to enclose their DNA apart from the rest of the cell.

Explanation:

Both Bacteria and Archaea are prokaryotes, single-celled microorganisms with no nuclei, and Eukarya includes us and all other animals, plants, fungi, and single-celled protists – all organisms whose cells have nuclei to enclose their DNA apart from the rest of the cell.

6 0
3 years ago
One form of chromatin modification is acetylation, which is known to occur on positively charged histone tail amino acids, thus
Naya [18.7K]

Answer:

A. The tails do not interact with the DNA

Explanation:

The acetylation refers to the transfer of the acetyl group from Acetyl-CoA to the N-terminal of the histone protein.

Lysine residues (positively charged amino acid) are present at the end of the N-terminal of the histone protein which is neutralized by the acetyl group.

This loses the compaction between the positively charged histone and the negatively charged DNA and the DNA becomes more relaxed. This relaxed state allows the transcription factors to easily bind the DNA and therefore the DNA becomes transcriptionally active.

Thus, Option-A is correct

4 0
3 years ago
How is air pollution affecting global warming
Ahat [919]

Answer:

here is your answer

Explanation:

Global warming is primarily caused by emissions of too much carbon dioxide (CO2) and other heat-trapping gases into the atmosphere when we burn fossil fuels to generate electricity, drive our cars, and power our lives. Thus, as we continue to emit these gases, their atmospheric concentrations build up over time

8 0
3 years ago
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Your friend claims that all mutations are harmful to living things. Do you agree or disagree with this claim? Support your posit
oksian1 [2.3K]

Answer:

Explanation:

yes

4 0
3 years ago
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In which reactions of cellular respiration and fermentation does substrate-level phosphorylation occur? (A) only in glycolysis (
Roman55 [17]

The reaction of cellular respiration and fermentation substrate level phosphorylation occur in both glycolysis and the citric acid cycle.

This phosphorylation occurs in the cytoplasm of cell and in mitochondria. When the phosphorylation inside the mitochondria, it occur during Krebs cycle. In this reaction the molecules are broken down in presence of oxygen to produce energy.

In cytoplasm, the reaction occur during the glycolysis. It is the reaction to add a phosphate group to a molecule that is derived from ATP.

Krebs cycle this is also known as citric acid cycle (CAC). This is the reactions in which oxidation of acetic acid provides energy for storage in phosphate bonds.

To learn more about Krebs here

brainly.com/question/13153590

#SPJ4

5 0
2 years ago
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