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BigorU [14]
2 years ago
8

Which function of the muscular system is best illustrated by the heart pumping blood throughout the body?

Biology
2 answers:
vagabundo [1.1K]2 years ago
8 0

Answer:

i think it is A hormone regulation

Schach [20]2 years ago
8 0

Answer:

A.

Explanation:

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Brainliest!! Extra points!!! PLEASE ANSWER both QUESTIONS PLEASE!!
gavmur [86]

Answer:

It's c (13)

12 is Freezing

Explanation:

5 0
3 years ago
What happens during the initiation step of DNA transcription? A ribosome attaches to the initiation codon of a completed mRNA st
Amanda [17]

Answer:

<u>A portion of the DNA unwinds and RNA polymerase attaches to the DNA within the transcription bubble.</u>

Explanation:

Transcription is the process in which DNA template is used to synthesize  mRNA.

There are three steps of transcription:

  • <u>Initiation</u>

It is the process in  which a portion of DNA unwinds and RNA polymerase binds to the promotor region on the DNA.

  • <u>Elongation</u>

It is the process in which RNA polymerase moves along the DNA template and synthesizes mRNA. During this process, unwinding of double stranded DNA takes place.

  • <u>Termination</u>

As the RNA polymerase moves along the DNA template, it finally reaches a termination signal and then stops synthesizing. It is followed by the detachment of the newly formed mRNA and RNA polymerase from the DNA.

<u>QUESTION:</u>

  • <u> A ribosome attaches to the initiation codon of a completed mRNA strand.</u>

This is the incorrect answer choice as this process does not happen in the process of transcription. This event happens<u> in the process of translation in which mRNA is used to synthesize proteins or amino acids. mRNA attaches to ribosome during this process.</u>

  • <u>RNA polymerase moves along the template strand of the DNA creating an mRNA strand.</u>

This is the incorrect answer choice as this event takes place in the process of elongation.

  • <u>A portion of the DNA unwinds and RNA polymerase attaches to the DNA within the transcription bubble.</u>

This is the<u> correct answer choice as this event takes place in the process of initiation of transcription</u>

  • <u>The mRNA detaches from the RNA polymerase as the RNA polymerase leaves the DNA strand.</u>

This is the incorrect answer choice. This event takes place in the event of termination of transcription.

3 0
3 years ago
Can you help me with all of themmmm
Fofino [41]
Look up the symbol that it is pointing to and the name should pop up
5 0
2 years ago
The two upper chambers of the heart are separated from each other by the
lisabon 2012 [21]
 lungs or ribs that separate the two upper chambers from each other
8 0
3 years ago
Read 2 more answers
Which type of star cluster is loose and disorganized?​
andriy [413]

Answer:

open cluster

Explanation:

As the name suggests, an open cluster is a star cluster that is loose and disorganized.

8 0
3 years ago
Read 2 more answers
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