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Reil [10]
2 years ago
9

Why does DNA replication occur?

Biology
2 answers:
Ahat [919]2 years ago
6 0

Answer:

DNA replication needs to occur because existing cells divide to produce new cells. Each cell needs a full instruction manual to operate properly. So the DNA needs to be copied before cell division so that each new cell receives a full set of instructions!

Alinara [238K]2 years ago
3 0

Answer:

So that each cell has all of the information.

Explanation:

Please brainliest!

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Use of fossil fuels has increased the total amount of carbon in the carbon cycle.
nika2105 [10]

The correct answer is option a. true.

The fossil fuels, including coal and oil are present very deep inside the earth. In the carbon cycle, only fixation of atmospheric carbon dioxide in the organic material takes place. This cycle does not involve the recycling of the fossil fuels.

The burning of the fossil fuels directly release carbon dioxide and other carbon compound in the atmosphere, which was not involved in the cycle when it was present deep beneath the earth and ocean. Hence, the burning of fossil fuels increases the amount of carbon in the carbon cycle.

6 0
3 years ago
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Which mineral weathers faster hornblende and quartz?
Harrizon [31]
The answer is hornblende 
7 0
3 years ago
Whats the answer please??
dem82 [27]

D. Selective breeding

8 0
3 years ago
Is a sperm cell diploid or haploid
Westkost [7]

Answer:

haploid

Explanation:

because it is formed after meiosis

please mark me brainliest and 5 star

5 0
2 years ago
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(oxygen, electron transport chain, chemiosmosis, NADPH)
Vaselesa [24]

Hai there :3 I'm planning to study chemical engineering.

Question related to Biochemistry (Photosynthesis & Cellular Respiration)

1. Chemiosmosis.  In the process of chemiosmosis, specific enzymes (such as ATP synthase) create ATP. Hydrogen ions go from a higher proton concentration to a lower one, which is why it's called chemio"osmosis"

2. Electron Transport Chain (ETC). The name says it all. Simply explained, electrons are transported and transferred in the mitochondrial membrane.

3. Oxygen. O2, the diatomic molecule, is essential in respiration. In the final stage of respiration, at the near end of the electron transport chain, oxygen accepts protons to become water. Cells use O2 during oxidative phosphorylation.

4. NADPH. I remember learning what this acronym means by heart. Nicotinamide Adenine Dinucleotide Phosphate Hydrogen. NADPH is essential in photosynthesis as a typical coenzyme in the reduction of chemical reactions.

6 0
3 years ago
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