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OleMash [197]
3 years ago
14

How do we all know about this, but Peter didn’t? What tools do we have today that Peter’s world, 200 years ago, didn’t have? (ab

out 3 sentences)
Biology
1 answer:
Irina18 [472]3 years ago
4 0
Is there a story to this?
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The________________chemically changes food molecules into energy.
Julli [10]

Answer: It's the mitochondria.

Explanation:

6 0
3 years ago
What interaction between matter and energy occurs during the process of photosynthesis
krek1111 [17]
<span>6 CO2 + 12 H2O + light energy --> C6H12O6 + 6 O2 + 6 H2O
Energy from the sun begins the splitting of carbon dioxide and water into a sugar molecule, water and oxygen. Sugar is formed from CO2 using ATP and NADPH</span>
4 0
4 years ago
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Fish that feed on sediment will most likely be found in _______ rivers. a. shallow b. narrow c. deep d. fast-moving
daser333 [38]

Answer:

The correct answer is - option C. Deep.

Explanation:

The river with a narrow river channel found in shallow depth rivers that show relatively faster water flows than the deeper river that are slow in the water flow. In the shallow rivers sediments found in suspended mode and transported to the sea or delta and deposited there.

In deeper rivers, the sediments found deposited in the rivers which is helpful for the fishes for their nutrients as they feed on these sediments.

Thus, the correct answer is- option (C).

4 0
3 years ago
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The initial step in the formation of an aminoacyl-tRNA is Group of answer choices esterification of the tRNA activation of the t
asambeis [7]

Answer:

The initial step in the formation of an aminoacyl-tRNA is activation of the amino acid by reaction with ATP

Explanation:

In protein synthesis, the first step involves the formation of an aminoacyl-tRNA. This reaction is catalyzed by the the Mg²⁺-dependent enzymes known as aminoacyl t-RNA synthetases and occurs in two steps.

The first step of the reaction of the formation of an aminoacyl-tRNA is the  activation of the amino acid by the attachment of an AMP molecule formed from the hydrolysis of ATP to AMP and pyrophosphate. The aminoacyl adenylate intermediate is bound to the enzyme in this initial step. Subsequently, in the second step of the activation of the amino acid, the aminoacyl adenylate intermediate is then transferred to its specific tRNA. The pyrophosphate formed in the first step is hydrolyzed to 2 phosphate molecules by a pyrophosphatase.

The overall reaction step is illustrated below:

Amino acid + tRNA + ATP -----> aminoacyl-tRNA +AMP + 2Pi

7 0
3 years ago
Tobacco has been linked to many health problems. what is the most complete list of forms of tobacco that cause cancer?
lianna [129]
D is the correct answer
6 0
3 years ago
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