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Jobisdone [24]
2 years ago
7

With regard to the process of neural transmission, a refractory period refers to a time interval at which?

Biology
1 answer:
dangina [55]2 years ago
6 0

Neurotransmitters. With the regard to the process of the neural transmission, a refractory period refers to the time in interval in which. the Positively charged sodium ions are to pumped back to outside a neural membrane.

Neurotransmitters are the chemical messengers that your body can't function without it. Their job is to carry out chemical signals (“messages”) from one of the neuron (nerve cell) to the next target cell. The next target of the cell can be another nerve cell, a muscle cell or the gland.

Fortunately, the seven “small molecule” are neurotransmitters (acetylcholine, dopamine, the gamma-aminobutyric acid (GABA), or glutamate, histamine, norepinephrine, and the serotonin) do the majority of the work.

To know more about Neurotransmitters visit:

brainly.com/question/28101943

#SPJ4

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What are the two parts of cell division?
Brrunno [24]

Answer:

mitosis and meiosis.

Explanation:

5 0
3 years ago
Read 2 more answers
Certain varieties of chrysanthemums contain 18, 36, 54, 72, and 90 chromosomes; all are multiples of a basic set of nine chromos
AlekseyPX

The question is incomplete as it does not have the options which are:

aneuploids

allopolyploids

amphipolyploids

autopolyploids

Answer:

Autopolyploids

Explanation:

Autopolyploid refers to the ploidy condition in organisms in which the ploidy level of organism increases that is multiple set of a single chromosome is formed in tissues.

The autopolyploids condition is observed more frequently in the plants than the animals when the tissue cells divide.  In the given question, the chromosome number increases or double that is from 18 to 36 to 54, 72 and 90. This shows that the ploidy level is increasing.

Thus, Autopolyploids is correct.

4 0
4 years ago
Describe why translation of an mrna can start before transcription of the mrna is complete in prokaryotes but not in eukaryotes.
Lera25 [3.4K]

Answer:

<h2>In prokaryotes both transcription and translation occurs in cytoplasm (they lack true nucleus) while in eukaryotes, transcription occurs in nucleus while translation occurs in cytoplasm.</h2>

Explanation:

1. Prokaryotes do not have nucleus, so both transcription and translation occurs in the cytoplasm, therefor translation start before the completion of transcription.

2. While in eukaryotes, they have true nucleus, and there protein synthesis machinery (ribosomes) and  is situated in the cytoplasm.

So in eukaryotes transcription occurs in the nucleus, and after the completion of transcription, mRNA is processed and finally export into cytoplasm for translation.

3 0
4 years ago
Which of the following would not be among the most important characteristics of chemicals in determining their environmental ris
lozanna [386]

Answer:

C

Explanation: all the others are considered very important in determining a substance so they would also be important for the level of environmental risk

3 0
4 years ago
Which statement describes the manner in which an herbivore, such as a deer, gets and uses energy?
ZanzabumX [31]

Answer:

The correct answer is A.  It eats plants and converts the sugar in plants into ATP by cellular respiration.

Explanation:

Herbivores are animals that can not make their own food and depends on others to get food so they are heterotrophs. Herbivores are specialized to eat plants and gain energy from it.

The process they use to release energy from the ingested plant material is called cellular respiration. In this process, they absorb the carbohydrate(sugar) reserve present in the plant material and oxidize it to produce ATP in the cell. This ATP provides energy to the plant to perform metabolic activities. So the correct answer is A.

4 0
4 years ago
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