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mr_godi [17]
3 years ago
8

Cells constantly use energy to __________ _____________ into and out of the cell.

Biology
1 answer:
Lynna [10]3 years ago
7 0
Transport carrier proteins.
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qwelly [4]
The adaptations of organisms in a specific ecosystem are clues of evolution. for example, a giraffe has a long neck to reach leaves of high trees, birds migrate when cold weather comes etc
3 0
3 years ago
The existence of introns in mRNA-encoding genes seems to be a problem because so much cellular energy goes into splicing them ou
Svetllana [295]

Answer:

In normal conditions, introns serve following functions in the body of an organism:

1) They contain genes of miRNA which are known as Mirtrons, reverse transcriptase, endonucleases, transposase etc.

2) It is because of presence of introns that alternative splicing of mRNA is possible. The sex determination in drosophila is based on alternative splicing.

Apart from this, alternative splicing can be useful and beneficial in an unforeseen situation such as an environmental problem which is faced by the organism for the first time.

Explanation:

Alternative splicing is an important mechanism because with the help of alternative splicing different type of proteins can be synthesized from the same pre mRNA transcript. In case suddenly the surrounding environment of an organism is changed and the environmental conditions have become extremely harsh due to which organism's life is at stake, in such situation organism may make a different type of protein through alternative splicing which can help the organism in survival.  

Default splicing in Drosophila leads to the development of male off-spring while female off-spring is produced as a result of alternative splicing.  

8 0
3 years ago
What is pH and how do we measure it?
vitfil [10]

Answer:

ph is unit of measuring acid and base

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3 0
3 years ago
Water is a polar compound because it exhibits____charges
Art [367]

Answer:

I think it is negative charges

Explanation:

hope this helps :)

6 0
3 years ago
A group of 250 women over the age of 40 are recruited for a study to determine the effects that calcium has on bone health. Half
egoroff_w [7]

Answer:

A. True

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The result indicates that taking calcium has no effect on the development of osteomalacia in the women. This is because, of the over 120 women placed on the calcium supplements, it happens to be minimal number of people ( less than 20 people) that develop the osteomalacia disease of the bone.

6 0
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