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Thepotemich [5.8K]
3 years ago
15

What type of ions carry the impulse across the synapse from one neuron to the next ?

Biology
1 answer:
grandymaker [24]3 years ago
7 0

It's the sodium ion.

When a neural impulse is fired in both neurons, it is always cause by an excited electron in one neuron moving to the other neuron to destabilize the balance of ions trying to keep them at equilibrium. This action either depolarizes or hyper-polarizes the membrane. If it does, then sodium ions--the key deficient ones--can flow into that region of low charge and maintain that state of low charge, keeping the cell membrane stable.

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Which best explains why metal cooking utensils often have plastic coating on their handles?
Margarita [4]

Answer:

B) Plastic reduces the transfer of thermal energy two hands holding the utensil.

Explanation:

plastic is a good insulator which means it's prevent energy, in this case thermal energy, from conducting into the person holding it. Metal is a very good conductor which is why you wouldn't want it to touch your hand while you're cooking.

6 0
2 years ago
Read 2 more answers
What are the 5 functions of nematodes in the soil
m_a_m_a [10]

bacterial feeders, fungal-feeders, plant parasites, predators, and omnivores.

Yw.

8 0
3 years ago
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The lactose (lac) operon in E. coli is an example of a repressed gene when lactose is not available in a cell. In 3-5 sentences
irakobra [83]

Answer:

Please find the detailed explanation of this statement below

Explanation:

Firstly, a repressed gene is a gene whose expression has been inhibited or repressed. The lac operon in E.coli bacteria is a regulatory unit containing structural genes, a single promoter and operator regions. The promoter is the region where the transcription enzyme (RNA polymerase) binds to in order to transcribe the genes in the lac operon. The structural genes in the lac operon can only be expressed in the presence of lactose sugar.

However, in the absence of lactose, LAC REPRESSOR, which is a transcription factor (protein), prevents the binding of RNA polymerase to the PROMOTER region by binding to the OPERATOR region of the lac operon. This inhibits the expression of the lactose genes in the operon.

Note that, the structural genes in the lac operon (lacZ, lacY, lacA) code for proteins that help break down lactose sugar for energy in the E.coli bacteria. Therefore, a bacteria cell with a repressed lac operon will be unable to degrade lactose sugar.

4 0
3 years ago
The diagram below represents a cross-section of the portion of the earths crust
baherus [9]

Answer:

The continental crust is thicker than the

oceanic crust.

5 0
3 years ago
Alisa is studying the way in which men and women select partners to marry. She notes that across 37 cultures, one study found th
Alja [10]

Answer:

The correct answer will be option-A

Explanation:

The practice of marriage is practised in every culture which is associated with the union of the boy and a girl to which they are committed to spending a life-long relationship.

The studies on the preferences shown by the woman who has to get married have to look for the boys who are career-oriented which could provide a good earning to feed them and their family and fond of children to establish a family which will help develop the stronger relationship between them.

The girls ignored the attractiveness feature of their spouses as in a long term relationship attractiveness does not matter because of the feeling of love and strong bond between them.

Thus, option-A is the correct answer.

4 0
3 years ago
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