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vekshin1
3 years ago
10

What is meant by this statement?

Biology
1 answer:
uranmaximum [27]3 years ago
6 0
To determine a Brian in its skull for 1.99 and
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Mention 3 uses of the diaphragm in the body​
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Answer:

Explanation:

When you exhale, the diaphragm relaxes and the air is pushed out of lungs. It also has some nonrespiratory functions as well. The diaphragm increases abdominal pressure to help the body get rid of vomit, urine, and feces. It also places pressure on the esophagus to prevent acid reflux.

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2 years ago
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Three main steps in the process of DNA replication. Name the enzymes that go with each step
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Answer:

The three mains in the process of DNA replication are 1 initiation 2 elongation 3 termination.

Explanation:

Enzymes those function during initiation

1 Helicase.

2 single strand binding protein.

3 Topoisomerase.

Enzymes those function during elongation

a DNA polymerase alpha

b  DNA polymerase delta

c  DNA polymerase epsilon

Enzymes those function during termination

1 Replication protein A

2 Replication factor C

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3 years ago
Part A - Modification of chromatin structure Which statements about the modification of chromatin structure in eukaryotes are tr
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Answer:

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

DNA is not transcribed when packaged tightly in a condensed form

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
Scientist who specialize in the study of fossils are called
Olegator [25]
They are called paleontologists.
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Which substance is considered a building block for all living things?
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Answer:

Cells

Explanation:

all living things are made up of one or more cells

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