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Elodia [21]
4 years ago
14

Where do fossil fuels come from?

Biology
1 answer:
Oksi-84 [34.3K]4 years ago
3 0
D. The remains of living things Fossils are the remains of living things
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How are hydrogen bonds different from covalent bonds?
Marrrta [24]
Hydrogen bonds differ from covalent bonds. Hydrogen bonds form due to the positive charge of a molecule being attracted to the negative charge of a water molecule.

This is due to water being a polar substance. Polar substances have covalent bonds where the electrons are shared unequally. This creates a slight charge at each end of the molecule. This charge is what creates a hydrogen bond between a water molecule and another molecule. Hydrogen bonds are weaker than covalent bonds.

The solution is B. 
7 0
3 years ago
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Approximately how many total ATP equivalents are generated by the complete oxidation of one molecule of acetyl CoA via the citri
kondor19780726 [428]

Answer:

C. 10 ATP molecules

Explanation:

In the citric acid cycle is a series of eight reactions steps in which a two-carbon molecule, acetyl-CoA, enters the cycle through citrate and two atoms of carbon are removed as two molecules of carbon dioxide.

The energy generated by the complete oxidation of one molecule of acetyl CoA via the citric acid cycle is conserved in the production of three NADH molecules, one FADH₂ and one ATP molecule. Each NADH molecule transfers two electrons to oxygen in the electron transport chain, forming 2.5 ATP molecules each in the process. Similarly, an FADH2 molecules transfers two electrons to oxygen in the electron transport chain yielding 1.5 ATP molecules.

Total ATP molecules produced:

3 NADH + 1 FADH2 + 1 ATP = (2.5 × 3) + (1.5 × 1) + 1 ATP = 10 ATP  molecules

Therefore, 10 ATP molecules are generated by the complete oxidation of one molecule of acetyl CoA via the citric acid cycle.

5 0
3 years ago
Explain how the hardy-weinberg equation allows us to find evidence of evolution.
trasher [3.6K]
The answer is C. define what the process is.
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3 years ago
Damage to which of the following structures would most likely result in an increase in mutations in a man's sperm cells
Anestetic [448]

Answer: Option B

Explanation: Spermatogenesis

Spermatogenesis can be defined as the process by which the spermatozoa (haploid) develops from the germ cell In the semniferous tubules of the testes.

The damage in the testes can result in the mutation in the man's sperm cells. Any damage to the this structure will result in hindrance in the process of spermatogenesis.

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3 years ago
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Animals use pheromones to communicate
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the correct answer is true

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