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Sergeeva-Olga [200]
3 years ago
7

Which best describes why the cell membrane is selectively permeable?

Biology
1 answer:
alukav5142 [94]3 years ago
6 0

Answer:

The answer is It allows only certain materials to enter and exit the cell.

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Investigators examined the expression of transporter mrna and protein produced in zebrafish homozygous for each of the alleles a
svlad2 [7]
The allele which has light color appears to be altering transcription and that is why the corresponding mRNA is absent in zebrafish which is homozygous. The protein we can say were absent because mRNA which is being required for protein synthesis it was not present. 
If the allele had altered translation, mRNA which is functional would have been present but in the same case, the protein will still be absent.
8 0
3 years ago
How do the potential energy and the kinetic energy change when the skateboarder is at the top or the bottom of the hill? Why do
Vikentia [17]

Answer:

Potential at the top. Kinetic when going down the hill.

Explanation:

Its basically mechanical energy! While at the top you have the potential to go down and race down using kinetic energy.

7 0
3 years ago
Roberta makes a $9 an hour plus a 12.5% commission selling jewelry how much does she earn on a 8 hour shift which she sells $380
aivan3 [116]

Answer:

The amount Roberta makes an hour is $119.5

Explanation:

Let the number Roberta makes be x hours.

Amount earned in x hours shift - 9*x + 12.5% of the amount of jewelry sold.

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Substituting the values:

Amount earned in an 8 hour shift = 9*8 + 12.5% od 380

= 72 + 0.125 * 380 (12.5% = 0.125)

= 12 + 47.5

= 119.5

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3 years ago
What is radioactive dating?
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This organelle most likely belongs to which organism?
denis23 [38]

Is there a picture for this?

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