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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.

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Which is required for sexual reproduction?

m_a_m_a [10]

Answer:

Meiosis

Explanation:

Haploid number of chromosomes

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3 years ago

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What is the normal pulse range for a child 2-5 years of age?

Zarrin [17]

B because it is a child of 2-5 years

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1 year ago

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Increasing the alveolar ventilation rate will Group of answer choices increase the partial pressure of oxygen in the alveoli. de

Pie

Answer:

Increasing the alveolar ventilation rate will increase the partial pressure of oxygen in the alveoli.

Explanation:

Alveolar Ventilation rate is the rate of air flow in the alveoli of the lung during normal breathing. It is measured in milliliters of air per minute (mL/min). The alveolar ventilation rate is an important factor in determining the concentrations (partial pressures) of oxygen and carbon dioxide in the functioning alveoli.

A high rate of alveolar ventilation, would result in a rapid influx of oxygen-rich air and efflux carbon dioxide-filled air from the alveoli. This ultimately results in an increase in the concentration of oxygen and a decrease in the concentration of carbon dioxide within the alveoli.

Effects of alveolar ventilation on partial pressures of alveolar carbon dioxide and oxygen (PACO₂ and PAO₂)

If the alveolar ventilation rate is increased (and carbon dioxide production is unchanged), then the partial pressure of carbon dioxide in the alveoli, PACO₂ will decrease.

If the alveolar ventilation rate increases, then the partial pressure of oxygen in the alveoli, PAO₂ will increase.

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2 years ago

Why is the outdated term "junk dna" a misnomer for noncoding regions of the human genome? Why is the outdated term "junk dna" a

KIM [24]

Answer;

-The conservation of "junk DNA" sequences in diverse genomes suggests that they have important functions.

Explanation;

-The term junk DNA refers to regions of DNA that are noncoding. DNA contains instructions (coding) that are used to create proteins in the cell. However, the amount of DNA contained inside each cell is vast and not all of the genetic sequences present within a DNA molecule actually code for a protein.

-Some of this noncoding DNA is used to produce non-coding RNA components such as transfer RNA, regulatory RNA and ribosomal RNA. However, other DNA regions are not transcribed into proteins, nor are they used to produce RNA molecules and their function is unknown.

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3 years ago

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Which example illustrates the difference a between community and a poopulation

azamat

Answer:

All the different kinds of animals in a zoo would be a community. All of the gorillas in the zoo would be a population.

(Does that make sense to you?)

Explanation:

Community- multiple different species in a place.

Population- a single species in a place.

I'm sorry, but the way you spelled population has me crying XDD

Have a nice day! :)))

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3 years ago