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Alborosie
3 years ago
11

ASAP

Biology
2 answers:
nignag [31]3 years ago
4 0

Answer:

c

Explanation:

solniwko [45]3 years ago
3 0
Muscles and kidneys or muscles and skin
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Attenuation is a type of regulation that can control
Firdavs [7]

Attenuation is the regulatory mechanism to control gene expression or transcription.  Attenuation was first observed in trp operon of E.Coli bacteria (commonly found at guts of warm blooded animal).  E.Coli bacteria need tryptophan which is a kind of amino acid. The bacteria can either take tryptophan from environment or itself synthesize by using bio synthetic enzymes. These bio synthetic enzymes are encoded by five genes located next to each other which we called as trp operon.

When tryptophan levels are high, then the transcription of trp operon is controlled. This process is called Attenuation. In this process the RNA polymerase is prematurely stopped during transcription of trp operon which results in formation of short mRNA. Due to premature control such mRNA doesn’t gets encoded with tryptophan biosynthesis enzymes.

Attenuation is carried out when tryptophan level is high, so as to prevent unnecessary production of biosynthetic enzymes which are needed to make tryptophan.

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7 0
3 years ago
12. Cells can interact with other cells
lina2011 [118]

Answer: True

Explanation: Cell sends and receives signals from each other. This allows for our body to function correctly.  For example your brain cells sends many signals to the rest of the body.

5 0
4 years ago
Use the drop-down menus to select the names of the<br> labeled structures<br> A:<br> B:<br> C:
likoan [24]

Answer:

<em><u>A</u></em><em><u>:</u></em><em><u> </u></em><em><u>crust</u></em>

<em><u>B</u></em><em><u>:</u></em><em><u> </u></em><em><u>mantle</u></em><em><u> </u></em>

<em><u>C</u></em><em><u>:</u></em><em><u>core</u></em><em><u> </u></em><em><u>explanation</u></em><em><u> </u></em><em><u> </u></em><em><u>may</u></em><em><u> </u></em><em><u>it</u></em><em><u> </u></em><em><u>help</u></em><em><u> </u></em><em><u>u</u></em><em><u> </u></em><em><u>buddy</u></em><em><u> </u></em>

8 0
3 years ago
Read 2 more answers
3. Living systems consist of organisms interacting with their environments. The carbon cycle is an example of a living system. A
vesna_86 [32]
I encountered a similar question with these give choices:

<span>A) Mass and energy are conserved in the carbon cycle.
 B) When all the fossil fuels are used up, there will be no more carbon.
 C) As population sizes increase, more carbon is produced.
 D) The Sun absorbs energy from the carbon cycle.

Among the choices, only choice A is the true statement.

Mass and energy are conserved in the carbon cycle. This is known as the Law of Conservation of Energy and Law of Conservation of Mass. 

Mass and energy remains constant. They are neither created nor destroyed. They simply are recycled and take on different forms but are of the same measure.</span>
4 0
3 years ago
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How is a hummingbird getting nectar from a flower an example of mutualism?
horrorfan [7]
Mutualism is when both sides benefit. The hummingbird gets nectar and the flower is benefited because the hummingbird that has been to other flowers carry pollen on its body which spread the flower when it sucks its nectar, therefore pollinating the flower in the process.
7 0
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