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3 years ago

Hemoglobin is produced by

1 answer:

6 0

Answer: Hemoglobin is produced in bone marrow by erythrocytes and is circulated with them until their destruction. It is then broken down in the spleen, and some of its components, such as iron, are recycled to the bone marrow.

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Which components of animal plasma membranes reduces the permeability of the membrane to most biological molecules?

jarptica [38.1K]

Cholesterol

The animal plasma membrane is a layer of phospholipids that is entwined with cholesterol and proteins. Cholesterol makes up a small part of the cell membrane's mass and it is present in every cell of the body. Cholesterol maintains the integrity of the cell membrane. It assists in the immobilization of the outer surface of the cell membrane and it reduces the permeability of the membrane to most biological molecules. Cholesterol also perform roles in cell signaling, maintaining fluidity and protecting important proteins in the membrane.

6 0

4 years ago

Brian is a forensic investigator studying a tool mark on a door jam. He has gone through the steps of collecting the tool mark e

julsineya [31]

Answer:

I got you my mans

Explanation:

Identify and Describe

vvvvvvvvvvvvvvvvvvv

Photograph

vvvvvvvvvvvvvvvvvvv

Make a comparison cast

vvvvvvvvvvvvvvvvvvv

Compare under a microscope

5 0

3 years ago

In an ecosystem, carbon and oxygen are both

Karolina [17]

Answer:

The oxygen cycle and the carbon cycle are closely related as they both involve photosynthesis and cellular respiration. Carbon dioxide is taken in by producers to undergo photosynthesis, and oxygen is released as a bi-product.

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5 0

3 years ago

Why would it be hard to outline the entire history of the United States on the geologic time scale?

saw5 [17]

The U.S. history would be narrower than the width of the line.

3 0

2 years ago

DNA polymerase III Select one: a. is needed for adding nucleotides during mRNA synthesis. b. synthesizes new DNA only in the 5'

krok68 [10]

Answer:

<u>b. synthesizes new DNA only in the 5' to 3' direction.</u>

Explanation:

DNA Polymerase III is involved in replication of DNA, it is involved in the proofreading of the replication mistakes by activity reading 3' to 5' and synthesizing 5' to 3' . It can add nucleotides to the strand at the rate of about 1000 nucleotides per second.

4 0

3 years ago