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NemiM [27]
3 years ago
6

Which of the following is true? Group of answer choices In the brain, neurons are more abundant than neuroglia. An action potent

ial never occurs in dendrites. When a neuron is stimulated, Na+ gates open and allow Na+ to exit the cell. In a myelinated fiber, only the initial segment in the trigger zone has voltage-regulated channels. Norepinephrine is a neuropeptide.
Biology
1 answer:
mr_godi [17]3 years ago
6 0

Answer:

The true statements are:

An action potential never occurs in dendrites.

Norepinephrine is a monoamine.

Explanation:

In the following question only two statements are true that are; an action potential never occurs in dendrites as it occurs in nerves to send signals from cell body and axon and transmit it.

The second correct statement is Norepinephrine is a monoamine as these are particular neurotransmitters dopamine, serotonin, also known as catecholamines sometimes.

Thus, the correct answer is :

An action potential never occurs in dendrites.

Norepinephrine is a monoamine.

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A cell biologist determines that diploid cells from a particular species of grasshopper contain 200 picograms of DNA per cell du
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Answer:

The correct answer will be- 200

Explanation:

The cell cycle in eukaryotes mostly takes place in four phases: G₁, S, G₂ and M phase in sequence.

The DNA replication takes place during S phase which doubles the amount of DNA in a cell after which during M- phase the DNA divides into the daughter cell.

The amount of DNA present during G₂ phase is the 200 pg which will remain same until anaphase I as the segregation of chromosomes to the daughter cells takes place in the anaphase. Therefore, the amount of DNA observed after G₂ phase will remain 200 pg till metaphase I.

Thus, 200 is the correct answer.

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Do plants break down glucose to obtain energy?
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2nd choice is the correct one
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Please help<br> Explain how independent and dependent variables apply to life
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Answer:

If one wants to estimate the cost of living of an individual, then the factors such as salary, age, marital status, etc. are independent variables, while the cost of living of a person is highly dependent on such factors. Therefore, they are designated as the dependent variable.

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In assembling a nucleosome, normally the …(1) histone dimers first combine to form a tetramer, which then further combines with
Readme [11.4K]

Answer:

option 1

Explanation:

In assemblying the nucleosome, this reaction occurs in two main steps. the H3 and H4 are recruited first to the DNA in pairs forming the H3/H4 tetramer; meaning two of H3 and two of H4. This gives rise to the nucleosome precursor. Then after this, the dimers of both H2A/H2B are recruited to this precursor, to give rise to the octamer structure around which the DNA is wrapped.  

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igor_vitrenko [27]

Answer:

The daughter cells need a copy of every chromosome in order to replicate and separate.

Explanation:

Cells have to replicate their genetic material to make a whole other cell. Before mitosis the cells need this step for mitosis.

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