10. What hormone is antagonistic to the activity of PTH? How do they work together to

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!

6 0

3 years ago

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Which of the following statements about eukaryotic mRNA processing is not correct?

ch4aika [34]

Answer:

The correct answer will be option-D.

Explanation:

In eukaryotes, the process of transcription takes place inside the nucleus whereas translation takes place in the cytosol. So, mRNA has to export to the cytosol from the nucleus.

Before export, the post-transcriptional modification takes place like 5' capping, 3' tailing and splicing mechanism.

The capping is done at 5' end by adding modified guanine (G) nucleotide which protects the mRNA from exonuclease activity and tailing is done at 3' end by adding adenine nucleotides which provides stability to the mRNA.Splicing removes the junk DNA called introns and joins the exons before export.

Thus, option-D is the correct answer.

6 0

3 years ago

HELP ASAP!!!

Margarita [4]

I think the answer should be True! Because it had the distance from to the sun and Earth is only one astronomical unit.

Hope it helped!

6 0

3 years ago

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An antibiotic kills 99.9% of a bacterial population. You would expect the next generation of bacteria Group of answer choices to

nignag [31]

to be more resistant to that antibiotic

7 0

3 years ago

Margaret's parents are both obese. She has dieted six times, each time losing a considerable amount of weight and subsequently r

alex41 [277]

Answer: c. when she ends the diet she regains additional body fat.

Explanation:

Obesity can be defined as a genetic disorder in which the body obtains and retains too much amount of body fat. It is different from being overweight.

Obesity happens when the person obtains more amount of calories in the food then actually burned through work or exercise. Obesity increases the risk factor for arthritis, stroke and cancer.

Here, in the given situation, ending up diet is the likely cause of regaining weight again. As the unstable diet is likely to add more calories then actually utilized by the body and will be retained as fat.

5 0

3 years ago