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Deffense [45]
3 years ago
5

What happened to the bacterial plates not treated with antiseptic?

Biology
1 answer:
zysi [14]3 years ago
5 0

Answer:

They are bombarded with nuclear missiles.  

Explanation:

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During the course of successful prenatal development, a human organism begins as a(n) _____ and ends up as a(n) _____.
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<span>The correct answers are zygote and fetus. This is correct because the initial joining of the sperm and the egg is called the zygote. The zygote is the first step in prenatal development that grows and transforms over months into the final form, a fetus. The fetus is the last form of the zygote prior to birth.</span>
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The combination of a chemical reaction through which an organism builds up or breaks down materials as it carries out its life p
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Metabolism

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3 years ago
Dolphins hear with:
enot [183]

Answer:

A.

Explanation:

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6 0
3 years ago
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God PLEASE help. What does surface area-to-volume ratio, diffusion rate, and time for substances have anything to do with reachi
sasho [114]

Answer:

Surface area to volume ratio, in simple means the size of surface area to the volume of substance that can pass through it at a particular time.

Amoeba and some bacterias are flat and have large surface area to volume ratio. So the diffusion rate is very high due to large surface area.

Where as humans have small surface area: volume so diffusion is very slow or does not take place at all.

Explanation:

As the ratio gets smaller, it takes longer for items to diffuse.

Explanation:

When the cell increases in size, the volume increases faster than the surface area, because volume is cubed where surface area is squared.

When there is more volume and less surface area, diffusion takes longer and is less effective. This is because there is a greater area that needs to receive the substance being diffused, but less area for that substance to actually enter the cell.

this is actually why cells divide. When they become too large and it takes too long for them to transport materials across the cell, they lose efficiency and divide in half to raise the surface area to volume ratio.

I HOPE TGIS HELPS PKEASE MARK ME AS BRAINLIEST

4 0
3 years ago
Helps activate T cells, which are produced in bone marrow but mature in the thymus gland<br> HELLPP
love history [14]

Answer:

peptide antigens by MHC class II molecules

Explanation:

Helper T cells are activated by peptide antigens by MHC class II molecules. These antigens express on the surface of antigen-presenting cells (APCs). After activation, the T helper cells divide and secrete cytokines  to assist the immune response.

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