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Brrunno [24]
3 years ago
5

1) In an important experiment with E. coli Meselson and Stahl

Biology
1 answer:
Serggg [28]3 years ago
7 0

Answer:

C

Explanation:

Just took the test

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What happens to RNA polymerase II after it has completed transcription of a gene? a. It begins transcribing the next gene on the
Over [174]

The correct answer is: b. It is free to bind to another promoter and begin transcription

Transcription is the first step of gene expression in which DNA molecule is copied (transcribed) into RNA (mRNA) by RNA polymerase. The process of transcription is divided into three phases:

1. Initiation

• RNA polymerase with transcriptional factors bind to gene promoter  

• RNA polymerase unwinds DNA double helix (transcription bubble is formed)

2. Elongation

• RNA polymerases adds nucleotides complementary to DNA  

3. Termination

• RNA polymerase gets to stop codon (transcribes a sequence of DNA known as a terminator)

• Formed complementary RNA strand is released from DNA-RNA complex.

RNA polymerase is also released and can transcribe some other gene by binding to its promotor. RNA polymerase will transcribe just the genes whose products are needed at a particular moment.

7 0
2 years ago
An Asian elephant has a weight of 52,900 newtons. This enormous weight is balanced on four feet. In a circus act, these elephant
Aleonysh [2.5K]

Answer:

Option B, 18.11 \frac{N}{cm^{2}}

Explanation:

Given-

The average surface area of one foot pad of an elephant is 2920 cm^{2}\\

Weight of an Asian elephant is 52900 newton

As we know, pressure is equal to total weight divided by total area of the surface on which it is concentrated.

Thus, pressure on one foot  pad of elephant is \frac{52900}{2920} \frac{N}{cm^{2}} \\

= 18.11\frac{N}{cm^{2}}

Hence, option B is correct answer

7 0
3 years ago
What causes weathering
kozerog [31]
Weathering is wearing down objects by elements in an environment
6 0
3 years ago
Read 2 more answers
61. If tyrosine and isoleucine undergo condensation, the new bond that is formed is between the:
iris [78.8K]
<h3>Answer: E) carbon of the carboxyl group and the nitrogen of the amino group.</h3>

Explanation:

tyrosine and isoleucine are amino acids.

When they are condensed, they form a peptide bond which occurs between the carbon of the carboxyl group and the nitrogen of the amino group (OPTION E).

8 0
2 years ago
Bottleneck events are always caused by the death of most of a species’ population. true or false
Phoenix [80]
Your answer is true hope this helps
4 0
2 years ago
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