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Ket [755]
2 years ago
7

Neverrrrrrrrrrrrmindddddddd

Biology
2 answers:
Ksivusya [100]2 years ago
5 0

I want Brainliest!!!!!!!!!!!!!

Flauer [41]2 years ago
4 0

never mind - nvm

meaning: Dont worry about it or/ when your about or you said something but you dont want to say it anymore

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Why would a study involving continuous handrail support, oxygen uptake, and heart rate in women during submaximal step treadmill
patriot [66]

The answer is : randomization was not used in sample selection. The major difference between experimental and quasi-experimental designs is lack of randomization in sampling selection.

3 0
2 years ago
The changes to the cuttlefish’s skin are related to _______.
Pachacha [2.7K]
The bands of circular muscle structures that are located at the cuttlefish skin are most likely responsible for the changes of its outer covering. In addition, the colour cells that are present on the cuttlefish skin were estimated to be about 10 million which is why it was coined "the chameleons of the sea."
7 0
3 years ago
True or false? One possible way to alter chromatin structure such that genes could be transcribed would be to make histone prote
Dmitrij [34]

Answer:

False

Explanation:

The histones that are more positively charged, tight hardly to negatively charged DNA. So, enzymes, such as acetyltransferases, that reduce the positive charge of histones promote transcription.

Chromatin structure and its modifications can change the package of the DNA and consequently, alter the gene expression. The most common modifications of the chromatin are covalent modifications such as acetylation/deacetylation (by acetyltransferases and eacetylases), methylation (by methyltransferases), and phosphorylation (by kinases).  This is the way of gene expression regulation.

The effects of modifications are different, for example methylation promotes  condensation of the chromatin and as a consequence, prevents binding of transcription factors to the DNA (transcription is repressed).

Acetylation loosens the association between nucleosomes and DNA (because it neutralizes the positive charge of histones) and consequently promotes transcription. Deacetylation is a process opposite to acetylation.

5 0
2 years ago
Please help, will give brainliest !!
Naddika [18.5K]

Answer:

You answer is A

Explanation:

A combination of high salinity and low temperature near the surface makes seawater dense enough to sink into the deep ocean. Hopefully this help if it didnt my bad

6 0
2 years ago
What is the function of skeletal muscles? to control the movement of internal organs to control the contractions of the heart to
PSYCHO15rus [73]
<em>The function of skeletal muscles is to control the movement of internal organs. The skeletal muscle pulls the tendons attached to the bones.</em>
8 0
3 years ago
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