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Natasha_Volkova [10]
3 years ago
14

One difference between mixtures and pure substances is that

Biology
2 answers:
ehidna [41]3 years ago
8 0

Answer: Option (A) is the correct answer.

Explanation:

A mixture is defined as the substance that contains two or more different number of substances which are physically mixed together.

For example, a mixture of mud and water can be separated through the process of filtration.

A pure substance is defined as the substance which contains either same or different type of atoms that are chemically combined to each other in a fixed ratio by mass.

For example, both Cl_{2} and MgSO_{4} are pure substances.

A pure substance can only be separated by chemical means.

Thus, we can conclude that one difference between mixtures and pure substances is that mixtures can be physically separated.

Fudgin [204]3 years ago
4 0
I'm Pretty Sure The Answer Is A.
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During which phase of meiosis does each of the following events occur?
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Answer:

(a) crossing over: Meiosis I, Recombination  

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Explanation:

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Meiosis II: Anaphase II. The centromeres separate and the daughter chromatids - now individual chromosomes - move to the opposite poles of the cell. The centromeres separate, and the two chromatids of each chromosome move toward the opposite poles in the spindle.

Meiosis II: Metaphase II. Chromosomes are accommodated in the equatorial plate of metaphase, similar to what happens in mitosis. They are attached to the already fully formed meiotic spindle. Each chromosome is aligned in the equatorial plate of the metaphase, as it happens in mitosis.

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