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3 years ago

The barrel of a gun is also known as what? Rifle Caliber Bore Gauge

2 answers:

6 0

I think the correct answer from the choices listed above is the third option. The barrel of a gun is also known as bore. The barrel is the metal tube which the bullet is fired and the bore is the inside of the barrel. It is the one closest to the barrel so it must be the answer.

Yuki888 [10]3 years ago

3 0

Answer:

The barrel is also known as the Bore.

Explanation:

Rifle- is a large type of gun, not a part of one.

Caliber- is the type of bullet fired from a gun, or the size of the bullet.

Gauge- used to show magnitude, amount, or contents of something, typically with a visual display.

None of these except bore would make sense.

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3 years ago

Beginning with a cell that just fertilized ( 1 cell ) how many times must it divide to become a 64 cell blastomere ?

natka813 [3]

A cell that just fertilized has to divide 6 times to form a 64 cell blastomere.

<u>Explanation:</u>

Human reproduction begins with the fusion of male gamete sperm and female gamete ovum. The fusion of sperm and ovum forms the zygote that is diploid. The zygote then undergoes mitotic division to develop into embryo.

The zygote first divides into two and the two individual cells divide again to form four individual cells and so on. Thus the number of cells after each division can be represented by the equation $2^n$ where n is the number of divisions. in the question it is given that the blastomere has 64 cells.

$2^n=64$

n=6

This means that the fertilized cell has to divide 6 times to develop into 64-celled blastomere.

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