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jasenka [17]
3 years ago
12

Select all that apply.

Biology
2 answers:
matrenka [14]3 years ago
5 0
Protons electrons  and neutrons

protons and neutrons are located on the nucleus and the electrons in the cloud. 
remember, protons have positive charge, neutrons are neutral and electrons have negative charge. 

hope i help you:)

solmaris [256]3 years ago
3 0

The correct answers are options

proton

neutrons

electron

The atom is the basic unit of the chemical compounds. The atoms comprise of a nucleus and the shells. In the shells of the atom, the electrons are present, and participate in the formation of the chemical compounds. In the nucleus of the atom, the neutrons and the protons are present; here the whole mass of the atom is concentrated.

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Part A - Modification of chromatin structure Which statements about the modification of chromatin structure in eukaryotes are tr
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Some forms of chromatin modification can be passed on to future generation of cells

Acetylation of histone tails in chromatin allows access to DNA for transcription

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methylation of histone tails can promote condensation of the chromatin

Explanation:

chromatin modifications that can be passed on includes epigenetic modifications that are heritable changes made to the chromatin structure that does not involve the DNA sequences. Some epigenetic modifications include DNA methylation and Histone modifications. examples of histone modification include acetylation, methylation, phosphorylation, ubiquintylation etc. All these function either in allowing the DNA become more accessible to transcritional factors or vice versa. for exmple, histone tail acetylation encourages unwounding of nucleosomes allowing transcriptional factors to have access to the DNa while histone tails methylation further tightens the nucleosomes promoting condensation of the chromatin.

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3 years ago
A drought causes a wildfire which destroys a forest. Which Earth systems interact during this process? (1 point) Select one: a.
Ne4ueva [31]

<u>Answer:</u>

<em>It is the biosphere and hydrosphere that interact when a drought causes a wildfire that destroys a forest. </em>

<u>Explanation:</u>

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