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Oduvanchick [21]

3 years ago

15

A mutant bacterial cell has a defective aminoacyl-trna synthetase that attaches a lysine to trnas with the anticodon aaa instead

of the normal phenylalanine. The consequence of this for the cell will be that _____.

1 answer:

ruslelena [56]3 years ago

8 0

Answer:

B) proteins in the cell will include lysine instead of phenylalanine at amino acid positions specified by the codon UUU

Explanation:

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. As arteries extend outward they decrease in thickness until they turn into microscopic vessels known as_ ((frog dissection))

sveticcg [70]

ANSWER: The correct answer is CAPILLARIES

EXPLANATION: Arteries are the muscular wall tube that carries oxygenated blood from the heart to other part of the body. The arteries extend outward from the heart, and form capillaries.

The capillaries are hairlike thinnest blood vessels, that helps to join the arteries and ventricles together. The blood in the arteries extends to the capillaries of the organs where the blood is supplied, and then moves out to from the organ via the ventricles.

The capillary starts from the part of the arteries that are very thin.

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Which is NOT a factor that influences mass movements?

Kazeer [188]

Soil type would be a factor that does not influence mass movement

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3 years ago

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What process occurs in prokaryotes but not in eukaryotes?

Naddika [18.5K]

Explanation:

In the given question, the options are not provided in the question and neither they are found anywhere therefore based on the previous knowledge this can be answered.

Since both the prokaryotes and eukaryotes are living therefore they perform the metabolism or chemical reactions in the form of process.

Both eukaryotes and prokaryotes perform almost similar process like the cellular respiration, photosynthesis by green colored organisms, the Central dogma related process like the replication, transcription and translation.

The central dogma related processes differ in these process only in terms of the site they are performed and a few modifications which are characteristics of the eukaryotic cells.

In prokaryotes, the transcription and translation are coupled and takes place in the cytosol whereas in eukaryotes transcription in the nucleus and translation in the cytosol.

Also in eukaryotes, modifications like the splicing, alternative splicing, capping and tailing are observed which are not observed in the prokaryotes.

8 0

3 years ago

What would be the most likely effect on the transcription of the trp structural genes for the mutation scenarios provided? mutat

blagie [28]

Answer:

I've responded to each scenario individually, please see below:

1. mutation that prevents ribosome binding to the mRNA

No transcription occurs

2. 5' UTR mutation that changes region 1 tryptophan codons into alanine codons

Transcription when alanine is low

3. mutation that creates a stop codon in region 1 of mRNA 5' UTR

Transcription occurs, a truncated protein will be made during translation

4. deletions in region 2 of the mRNA 5' UTR

Transcription occurs, region 1 and 2 might get paired together

5. deletions in region 3 of the mRNA 5' UTR

Transcription occurs, region 3 and 4 could combine to form a hairpin loop structure

6. deletions in region 4 of the mRNA 5' UTR

Transcription occurs, region 3 and 4 could combine to form a hairpin loop structure

7. deletion of the string of adenine after region 4 of the mRNA 5' UTR

Transcription occurs, however, it will not be as stable a molecule because of losing its polyA tail

Hope that answers the question, have a great day!

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3 years ago

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Which term best demonstrates when an organism is better adapted to the environment that they live in and are most likely to surv

Maksim231197 [3]

The answer is natural selection. :)

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