BIOLOGY HIGH SCHOOL

If some of the axons innervating a given cell are destroyed or if they become inactive, what compensatory process takes place in the remaining presynaptic cells?​

Answers

Answer 1
Answer:

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

  • activation of previously silent synapses
  • removal of toxins
  • denervation supersensitivity
  • collateral sprouting

Answer:

​Collateral sprouting

Explanation:

Collateral sprouting refers to a process in which the neurons which are still alive after they are destroyed or inactive, grows or sprouts its axons to the disabled territory.

The collateral sprouting is observed in the case of the somatic nervous system when the muscles are injured or destroyed. The motor neurons present in the injured part sprouts its axons to the muscle to keep them reinnervate and functional at that time.

In the given question, since some of the innervated axons get destroyed therefore the other axons will undergo collateral sprouting.

Thus, collateral sprouting is the correct answer.


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MIDDLE SCHOOL

Question 7 (1 point)
glucose + fructose -> sucrose + water is a type of
reaction

Answers

Answer: The given reaction is a "Dehydration Synthesis Reaction".

Explanation:

In chemical science the antonym of hydration is dehydration reaction which is a common process of conversion take place by involving loss of water from reacting molecule or ion. For an instance the dehydration process help in formation of disaccharide (sucrose) from two monosaccharides (glucose + fructose) as given in reaction.

Some other examples are like conversion of an acid and an alcohol into an ester and reaction called as "Fischer–Speier esterification", Conversion of an alcohol to alkene etc. Normally dehydration is followed by heating or leaving at room temperature, although it is a time taking process. Some common dehydrating agents are like alumina and sulfuric acid for organic synthesis.

HIGH SCHOOL

Which drugs appear to produce therapeutic effects by occupying the receptor sites for dopamine and blocking its activity?

Answers

I think the antipsychotic drugs appear to produce therapeutic effects by occupying the receptor sites for dopamine and blocking its activity. Antipsychotic drugs also known as neuroleptics are a class of medication used to manage psychosis; including paranoia or disordered thought, delusions, and hallucinations, mainly in schizophrenia and bipolar disorder.
MIDDLE SCHOOL

Why do cells divide instead of just grow larger

Answers

There are two main reasons why cells divide rather than continuing to grow larger and larger. One of the main reason is that the larger cell become more demanding, therefore the large cell will increase load on the machinery of the cell such as DNA. The other reason is that if the cell grow too large it will be difficult for the cell to move for nutrients and discard the waste across the cell membrane. Also the surface area for each cell will also be reduced, which is required for active functionality of a cell.

Cells are limited in size because the outside (the cell membrane) must transport the food and oxygen to the parts inside. As a cell gets bigger, the outside is unable to keep up with the inside, because the inside grows a faster rate than the outside .

There are two main reasons why cells divide rather than continuing to grow larger and larger: The larger a cell becomes, the.  more demands the cell places on its DNA. If the cell grows too large, it will have trouble moving enough nutrients and wastes across the cell membrane.


MIDDLE SCHOOL

Which was the first cell viewed by the light microscope?

Answers

The first cell viewed by the light microscope is microbes
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