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diamong [38]
3 years ago
14

How do scientists know living things are related to eachother? (there are two way)​

Biology
1 answer:
jeyben [28]3 years ago
6 0

Answer:

scientists can also analyze DNA to discover how closely organisms are related. Every living creature has DNA, which has a lot of inherited information about how the body builds itself. Scientists can compare the DNA of two organisms; the more similar the DNA, the more closely related the organisms.

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During.the process.of.cellular.respiration glucose.is.converted.into.what
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3 years ago
Why does the rate of heart beat increases during exercise?
kherson [118]

During exercises, our muscles needed energy for contractions. The heart pumps more rapidly and more powerfully during this time for a few reasons.


First, more oxygen and nutrients like glucose can be transported to the heart. Muscle cells uses oxygen and glucose for aerobic respiration to generate energy.


Secondly, more carbon dioxide and waste can be transported away from the muscles. Waste products from aerobic respiration includes carbon dioxide or water etc. The faster the heart pumps, the faster the blood gets transported so more waste can be carried away.


Thirdly, lactic acid can be carried away too. When oxygen supply is not enough, the cells undergo anaerobic respiration to generate energy. This type of respiration does not require oxygen, but a waste product called lactic acid is produced. Lactic acid must be carried away from cells because they're harmful. Therefore, the faster the heart pumps, the more lactic acid gets carried away.


Last but not least, heat can be carried away too. Part of the energy generated is turned into heat. Therefore, in order to help us cool down, blood travels fast to carry heat away from the heat generating muscle cells.

5 0
3 years ago
Read 2 more answers
If you were to jog for an hour, which energy storage molecules would your body access?
zepelin [54]

Answer:

Carbohydrates, such as sugar and starch, for example, are readily broken down into glucose, the body's principal energy source.

3 0
3 years ago
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How can a gene determine whether a person has albinism (give a molecular explanation.)?
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4 0
3 years ago
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