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daser333 [38]
3 years ago
8

Which of the phrases describe a chemical bond?

Biology
1 answer:
ikadub [295]3 years ago
7 0

Answer:

Chemical bond is sharing of electrons between atoms

Explanation:

Hmm..well honestly, im not entirely sure what you want to know because you did not include the choices to select from but above is a phrase to describe a chemical bond.

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What are the chromosomes called when they look like Xs​
Marina86 [1]

Answer:

I think you're referring to the Metaphase...

Explanation:

During Cell Division (or, rather before!) the DNA needs to be replicated. This normally is done by DNA Polymerase, and results in two identical double strands (the "Sister Chromatids".

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This "Zipping Up" makes the chromosomes more visible.

As the two sister chromatids are still connected, the result is the X-shaped Metaphase Chromosome....

6 0
3 years ago
In a sample of cells, the DNA content immediately following mitosis is measured and is equal to 10 picograms of DNA per nucleus.
Rasek [7]

Answer:

1. At the end of S phase- 20 pg DNA

2. At the end of G2 phase-  20 Pg DNA

Explanation:

The cell before undergoing M phase undergoes the steps of interphase that is G₁, S and G₂ phase.

During S phase, the process of cell replication takes place which replicates the DNA as a result of which the amount of DNA doubles. This DNA amount is reduced to half during the anaphase stage of M phase.

In the question since the amount of DNA is 10pg therefore the amount will be double during S phase and becomes 20 pg and will remain 20 pg until the DNA is distributed therefore at the end of G₂ phase Will remain the 20 pg.

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