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Lady_Fox [76]
3 years ago
8

How did Earth's atmosphere become oxygen-rich?

Biology
1 answer:
eduard3 years ago
4 0

Answer:

The answer is tiny organisms known as cyanobacteria, or blue-green algae. These microbes conduct photosynthesis: using sunshine, water and carbon dioxide to produce carbohydrates and, yes, oxygen. ... "What it looks like is that oxygen was first produced somewhere around 2.7 billion to 2.8 billon years ago.

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During protein synthesis, an RNA strand is transcribed from one strand of DNA (GCG
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Answer:CGC AAU GGA

Explanation:

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3 years ago
Most crimes involve some evidence relating to the human body; for that reason, what related science is frequently used in forens
kirill115 [55]
D. Biology. In forensics, they use DNA-related evidence, and DNA relates to biology.
7 0
3 years ago
How are lysosomes and vacuoles the same? How are they different?
patriot [66]

Answer:

No, lysosomes and vacuoles are not the same.

lysosomes are membrane bound sacs filled with digestive enzymes.

they digest a by foreign material and the worn out cells

they are known as the (brainly won't let me use the right word) <em><u>k</u></em><em><u>i</u></em><em><u>l</u></em><em><u>l</u></em><em><u>i</u></em><em><u>n</u></em><em><u>g</u></em><em><u> </u></em><em><u>i</u></em><em><u>t</u></em><em><u>s</u></em><em><u>e</u></em><em><u>l</u></em><em><u>f</u></em><em><u> </u></em>bags of the cell.

vacuoles are storage sacs of the cell for solid or liquid contents.

they are very small in animals and large in plant cells.

they provide the cell with turgidity and rigidity.

Explanation:

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5 0
3 years ago
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Deposition of plaques in the walls of the arteries results in ______
Charra [1.4K]
Hardening of the arteries results in atherosclerosis and deposition of plaques in the walls of the arteries results in <span>atherosclerosis</span>.

Hope this helps !

Photon
4 0
3 years ago
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If a mutation occurred that increased the number of exons in a sequence of DNA, what impact would this have on the protein forme
erastovalidia [21]

Answer:

See the answer below

Explanation:

<em>An increase in the number of exons in a sequence of DNA would result in another protein with a longer amino acid sequence.</em>

<u>Exons are the coding part of a gene as opposed to introns. After transcription, the non-coding part of the gene - the introns - are removed by splicing and the exons are joined back together. The final RNA that will undergo translation consists of only exons. </u>

The longer the exons in a gene, the more the codons present in the corresponding mRNA from the gene, and the more the number of amino acids that would be translated from the mRNA. A longer amino acid chain would result in a different protein.

Hence, a mutation that causes an increase in the number of exons in a sequence of DNA would result in a different protein with a longer amino acid sequence.

5 0
3 years ago
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