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Veseljchak [2.6K]
3 years ago
6

60 POINTS!!!!!!!!!!!!!!!!!!

Biology
2 answers:
GenaCL600 [577]3 years ago
7 0

Answer:

its A

Explanation:

olganol [36]3 years ago
6 0

The answer would be a
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Which group makes up the greatest amount of marine life mammals,fish,plankton,shellfish
Pachacha [2.7K]
Plankton they are the base for marine life
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3 years ago
For several years,researchers have atempted to produce AB artificial blood for transfusions. Artificial blood would most likely
Yuliya22 [10]

Answer:

It is a good concept but can't be used.

Explanation:

Producing artificial blood is a good concept but it can't take the place of real human blood because the artificial blood has many disadvantages which can cause great damage to our body such as binds nitric acid that affected blood flow, increases the level of bilirubin, amylase and lipase in the blood and also cause overload of iron in your organs or tissues so that's why it can't be used instead of original human blood but may be in the future if these complications are removed.

8 0
3 years ago
Classify each RNA post-transcription processing event according to whether it occurs in prokaryotes or eukaryotes.
tigry1 [53]

'RNA is transcribed and translated in the cytoplasm', 'transcription produces an mRNA ready for translation' and 'RNA is proofread for errors' occur in prokaryotes, whereas '5′ cap, 3' poly-(A) tail and RNA splicing' occur in eukaryotes.

The prokaryotic cells (e.g., bacterial cells) do not contain cell nuclei, thereby the messenger RNA (mRNA) must be transcribed and translated in the cytoplasm.

During prokaryotic transcription, the RNA transcript is proofread for errors. In bacteria, DNA polymerases proofread the transcript by using their 3’ → 5’ exonuclease activity.

In eukaryotic cells, RNA processing consists of several mechanisms:

  • A 7-methylguanosine cap (5′ cap) is added to the 5′ end of the precursor messenger RNA (pre-mRNA).

  • A 3' poly-Adenine (A) tail is added to the 3' end of the pre-mRNA.

  • Both the 5′ cap and 3' poly-(A) tail protect the RNA transcript from its degradation by exonucleases.

  • Eukaryotic RNA splicing consists of the removal of non-coding regions called 'introns' and subsequent splicing of the protein-coding regions called 'exons'.

Learn more in:

brainly.com/question/24415778

7 0
2 years ago
How does the use of nonrenewable resources compare to the use of renewable resources?
Afina-wow [57]
Renewable resources as u can guess are resources which can be reused. for example, wind energy and hydropower.

however non renewable resources are things like coal which can only be used once
7 0
3 years ago
Does anyone know im trying to answer this but im not sure
Andrew [12]
I think your answer is D
8 0
3 years ago
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