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Kobotan [32]
3 years ago
7

B. Directions. Read the given statement and provide the answer. You are in a community park. While walking, you have noticed tha

t there are many rocks on the ground. From these rocks, how will you know if they are igneous rocks? What are the things you should consider in identifying igneous rocks?
Biology
2 answers:
Stells [14]3 years ago
6 0
Gugnkhfjd. Kfkzlsoxkkc. Kfkslx
Flauer [41]3 years ago
3 0
Texture & grain size
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Answer:

A. The chromatin near cis-regulatory sequences will be more closed and there will be less transcription.

Explanation:

In the presence of histones, the cis-regulatory sequences of DNA like promoter, enhancers etc. are not exposed. The function of the histone acetyltransferases (HATS) is to cause chromosome decondensation i.e. removal of histones from the DNA so that transcription of the DNA could occur. Histone acetyltransferases (HATS) cause acetylation of lysine amino acid of the histone proteins. Acetyl group is negatively charged so the acetylation of histone proteins leads to the removal of their positive charge which ultimately leads to the decrease in the interaction between N terminal of histones and negatively charged phosphate group of the DNA molecule. As soon as histones are removed from the DNA where cis-regulatory sequences are located, the DNA becomes accessible for transcription.

But here a drug has been added which blocks the activity of histone acetyltransferases (HATS) in cancer cells. So it is quite evident that in these cells, histones will not get removed from the cis-regulatory sequences of DNA so the DNA will be more closer or tightly packed as a result of which  less transcription will occur.

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26) The contractile units of skeletal muscles are ________.
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The answer is <span>D) myofibrils

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4 0
3 years ago
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7 + 7 + (–1) = <br><br> A. 13 <br> B. 10 <br> C. 16 <br> D. 7
Burka [1]
Step 1. Simplify brackets

7+7-1

Step 2. Simplify

13

Done! :) Your answer is A. 13 Hope this helps!
4 0
3 years ago
Explain why a city that receives 10 hours more light each day has colder average temperatures.
goldenfox [79]

Answer:

Despite the hours of sunlight a city receives, the latitude of the city plays a larger role due to the fact that with a higher latitude, the higher the solar angle allowing a city to be much warmer.

Explanation:

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