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irina [24]
3 years ago
5

Although the percentage of teens smoking has gone done in recent years,

Biology
2 answers:
erma4kov [3.2K]3 years ago
8 0
B. 20 I believe is the answer.
Effectus [21]3 years ago
8 0

. Although fewer teens smoke than in the past, approximately 20 percent still do. If you’re under 18, smoking is illegal and you’ll face a heavy fine if caught.


Your answer shloud be 20%

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One form of chromatin modification is acetylation, which is known to occur on positively charged histone tail amino acids, thus
Naya [18.7K]

Answer:

A. The tails do not interact with the DNA

Explanation:

The acetylation refers to the transfer of the acetyl group from Acetyl-CoA to the N-terminal of the histone protein.

Lysine residues (positively charged amino acid) are present at the end of the N-terminal of the histone protein which is neutralized by the acetyl group.

This loses the compaction between the positively charged histone and the negatively charged DNA and the DNA becomes more relaxed. This relaxed state allows the transcription factors to easily bind the DNA and therefore the DNA becomes transcriptionally active.

Thus, Option-A is correct

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3 years ago
Pls pls pls help!! i’ll give brainliest
ankoles [38]

Answer:

materials move against a concentration gradient

7 0
3 years ago
During osmosis, water molecules move across the cell membrane.
Ivanshal [37]
True tehehehehehehhee
5 0
3 years ago
3. How does the salinity in water change as you move from inland areas out towards the ocean? Be sure to include the phrase "bra
Len [333]

Answer:

Explanation below.

Explanation:

3. The salinity of water increases as the water moves from the inland area to the ocean. This is because the ocean has high salinity.

Salinity is the amount or concentration of salt in the water.

WAYS BY WHICH ESTUARIES PROTECT THE INLAND AREAS

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2. Protect the inland areas from flooding.

3. Protect the inland areas from storm surges from hurricane.

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1. They provide nesting and feeding habits for many aquatic plants and animals.

2. Provide goals and services that are economically and ecologically indispensable.

3. Prevent shoreline erosion

4. Protect the inland areas from flooding.

IMPACTS OF DREDGING ON FISH LIVING ESTUARIES.

Dredging have negative impacts on the organisms in estuaries. These are

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4. Increased the concentration of suspended matter.

8 0
3 years ago
Does anyone ever find out that Vincent is not gerome in GATTACA
cupoosta [38]
Since there is no sequal to GATTACA, they basically just leave it up to your imagination to come up with the rest.

This same cinematic logic was put into place with the movie, "The Client". At the end, you are left you imagine for yourselves what you wish happens. 

I hope this helped! Have an amazing day :)
6 0
3 years ago
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