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Serga [27]
3 years ago
7

What must happen before a chemical reaction can begin?

Biology
2 answers:
Nitella [24]3 years ago
3 0
The answer should be <span>The activation energy must be reached.</span>
ankoles [38]3 years ago
3 0

Answer:

The reactants need to reach activation energy.

Explanation:

For a chemical reaction there need to be:

1.- The reactants ( the elements or compounds that are going to react).

2.- The activation energy (the necessary energy to start changing the matter in the interchange of atoms among the reactants).

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Compared with DNA replication, transcription is _______ error prone because of differences in _______.
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Answer:

more ; the proofreading system

Explanation:

Transcription is considered to be more error prone and this is mainly attributed to differences in the proofreading system.

Hope this helped! :^)

8 0
2 years ago
The part of the neuron that receives impulses is called
kifflom [539]
Your answer will be dendrites. they receive messages.
3 0
3 years ago
What takes place in a cell’s mitochondria?
nexus9112 [7]
The answer is B because mitochondria supports the respiration that it need to produce.
7 0
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For which amino acid is AAA a codon
abruzzese [7]

Answer:

proline

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coded for the polypeptide poly-proline. Therefore, the codon AAA specified the amino acid lysine, and the codon CCC specified the amino acid proline.

7 0
2 years ago
The sedimentation coefficient:
chubhunter [2.5K]

Answer:

option D is incorrect

Explanation:

the sedimentation coefficient is measured in Svedberg units named after the scientist Theodore Svedberg. the shape of the particle being measured in the ultracentrifuge is one of the factors that determines the sedimentation coefficient. the values are usually not additive as the sedimentation coefficient is based on the rate at which a particle sediments in an ultracentrifuge and not on the size. for example, the sedimentation coefficient of eukaryotic ribosome is 80S but is made up of the 60S large subunit and the 40S small subunit.

8 0
3 years ago
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