All categories

3 years ago

What happens in the postsynaptic neuron when excitatory neurotransmitters bind to receptors?

Biology

1 answer:

zubka84 [21]3 years ago

6 0

Answer:

it causes the depolarization of the target cell

Explanation:

Glutamate is an excitatory amino acid neurotransmitter that binds to specific receptors on the surface of target cells and thus causes its depolarization. During glutamate-mediated depolarization, the difference in charge inside and outside the cell is lost due to the entry of sodium and calcium positive ions into the postsynaptic cell (neuron) through specific ion channels. Moreover, glutamate binding also leads to the exit of potassium ions from the cell, thereby resulting in excitation. Through this mechanism, glutamate regulates many signaling pathways, such as those involved in memory, learning, emotions, cognition, motor control, etc.

You might be interested in

¿Por qué las células nerviosas no se comportan como las células del corazón?

vredina [299]

I have no idea what that means but the answer is b

7 0

2 years ago

If an attic polar bear is transferred to a zoo in tropical singapore, it will not be able to survive. What could be the reason f

anzhelika [568]

The answer is "Tolerance only for cold climates". Hope it helped!

3 0

3 years ago

Anybody can help me out<br> I think it's A but I want to be sure

notka56 [123]

Answer: ur right

Explanation:

6 0

3 years ago

Read 2 more answers

!!Help!! In dogs, the gene for fur color has two alleles. The dominant allele (F) codes for grey fur and the recessive allele (f

tatiyna

Answer:

% GENOTYPE

FF = 0%

Ff = 50%

ff = 50%

% PHENOTYPE

Black fur = 50%

Grey fur = 60%

Explanation:

This question involves a single gene coding for fur color in dogs. The allele for grey fur (F) is dominant over the allele for black fur (f). This means that a heterozygous dog (Ff) will have a grey fur.

In this question, a heterozygous female (Ff) is said to cross with a recessive male (ff) i.e. Ff × ff. The following gametes will be produced by each parent:

Ff - F and f

ff - f and f

Using these gametes in a punnet square (see attached image), the following genotypic proportion of offsprings will be produced:

Ff - 1/2 = 50%

ff - 1/2 = 50%

Ff is phenotypically GREY while ff is phenotypically BLACK. This means that 50% of the offsprings will be black and 50% will be grey.

7 0

2 years ago

What happens as a result of ion flow at a presynaptic terminal?

Anarel [89]

The correct answer is: Release of neurotrasmitters from the synaptic vesicles

Action potential travels through the membrane of the presynaptic cell causing the channels permeable to calcium ions to open. Ca2+ flow through the presynaptic membrane and increase the Ca concentration in the cell which will activate proteins attached to vesicles that contain a neurotransmitter (e.g. acetylcholine), Vesicles fuse with the membrane of the presynaptic cell, thereby release their contents into the synaptic cleft-space between the membranes of the pre- and postsynaptic cells.

7 0

3 years ago