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weqwewe [10]
3 years ago
6

According to the model, what is the role of RNA in DNA replication? A) RNA has no role in DNA replication B) RNA acts as a prime

r to direct the synthesis of new DNA by polymerase. C) RNA acts as an enzyme that breaks hydrogen bonds between base paired nucleotides. D) RNA stabilizes the DNA molecule on the leading strand while replication occurs on the lagging strand.
Biology
2 answers:
rjkz [21]3 years ago
8 0
The answer is B. Primase produces RNA, making it a type of RNA polymerase. RNA is complimentary to a single strand of DNA.
S_A_V [24]3 years ago
8 0

Answer:

Option-B

Explanation:

DNA replication is a process which replicates the DNA in a cell and increases the amount of DNA mediated by the enzymes.

The DNA replication begins when the Helicase enzyme opens the DNA and primase form an RNA molecule with a complementary sequence at 5' end of DNA which acts as a primer. The DNA polymerase can add the nucleotide after it binds the RNA primer as primer provides it's 3'-OH group to bind new nucleotides.

Since RNA molecule acts as a primer in the replication process to which the new nucleotides will be added, therefore, the Option-B is the correct answer.

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A teacher shows students a string of beads as a model of a chromosomes and genes. What do the beads represent? Explain
Elza [17]

Answer:

If the string of beads refer to a chromosome, then each bead is a gene responsible for one or more traits.

If the string of beads refer to a gene, then each bead refers to the sequence of nitrogenous bases in one strand of the gene.

Explanation:

A chromosome is composed of several genes.

A gene is composed of several nucleotides each containing a nitrogenous base. A gene is primarily made functional by the sequence of nitrogenous bases in its structure. If AGATTCA is a hypothetical sequence of the nitrogenous bases on one strand of a hypothetical gene then TCTAAGT will be the sequence of nitrogenous bases on the complementary strand of that particular gene.

3 0
3 years ago
A cell spends approximately _____ of its cycle in the M phase. 10% 30% 60% 90%
yawa3891 [41]
<span>90%

The M phase is part of the cell division process where the cell spends most its time in. This cell division process is varied from S phase, M phase, G1 and G2 phases. The mitosis process is where the cell starts to duplicate itself and produce daughter cells. </span>
7 0
3 years ago
Read 2 more answers
Which statement indicates that the patient who is taking an adrenergic-blocking drug understands the importance of avoiding othe
Vilka [71]

Answer:

Answer is 2,  "I should avoid drinking my morning coffee while taking this drug".

It should be noted that, the question is incomplete, because the options were not included. But, the likely options are,

1

"I should limit my fluid intake while taking this medication."

2

"I should avoid drinking my morning coffee while taking this drug."

3

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4

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Explanation:

Adrenergic - blocking drugs are also known as beta blockers. They are drugs or medicines used in treating or preventing high blood pressure, irregular heart beat, heart attack among others.

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In this sense, Food items containing caffeine, like coffee, should be avoided when taking the drugs , because, caffeine affect the work of beta blockers in the body.

6 0
3 years ago
After jogging for a while a person begins to experience burning muscle fatigue. Explain the reason for this. Be sure to identify
sergeinik [125]

anaerobic respiration.

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Thats the short answer, I don't know if you want more details such as using the equations of both types of respiration, etc.

5 0
2 years ago
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Which is a better scientific statement?
kenny6666 [7]
2. The function of wings is flight
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2 years ago
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