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Contact [7]
4 years ago
13

Explain why postsynaptic potentials are transient (i.e. short lived). In other words, what terminates the action of the neurotra

nsmitter on the postsynaptic cell?
Biology
1 answer:
REY [17]4 years ago
5 0

Answer: The action of a neurotransmitter at the postsynaptic cell is terminated by the following: enzymatic degradation, diffusion or reuptake into the presynaptic cell by specific transporters.

Explanation: After a neurotransmitter has bound to its receptor on the postsynaptic membrane and triggered a biological response, in order to avoid over stimulation of the receptors, the neurotransmitter is either degraded by specific enzymes or taken back to the presynaptic cell into the synaptic vesicles by action of specific transporters. This mechanism is to maintain a balance (homeostasis).

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Enzymes function most efficiently at the temperature of a typical cell, which is 37
Dvinal [7]

Answer:

I believe the warmer the heat is the molecules will speed up and the cooler the molecules are the slower it'll be

8 0
3 years ago
Which of these elements is found in both carbohydrates and water?
Nimfa-mama [501]
The answer is hydrogen and oxygen
8 0
4 years ago
Read 2 more answers
Drag each tile to the correct location.
OLEGan [10]

Answer:

Plant-like:

presence of flagella

shows the absence of cell wall, though chloroplast may be present

Animal-like:

absence of cell wall, as well as chloroplast

Fungus-like:

feeds on decaying matter

enclosed by a membrane called a pellicle

slime mold belongs in this category

Explanation:

The protists can be classified into three groups (plant-like, animal-like, fungus-like) based on the method of nutrition, movement, and mode of reproduction.

Plant-like protists have chloroplasts and trapped sunlight to form food ad energy (photosynthesis). They also have flagella used for the movement.

Example: Algae

Animal-like protists are heterotrophs that cannot make their food. They do not have chloroplast and cell wall outside the cell membrane.

Example: Protozoa

Fungus-like protists are single-cell eukaryotes that have a protective layer outside the cell membrane called pellicle. They feed on decaying organic matter.

Example: Slime mold and water mold

7 0
3 years ago
Why is a polar bear referred to as a tertiary consumer?
Snowcat [4.5K]

Answer:

Polar bears consume ringed seals (which are tertiary consumers) as well as fish like trout, salmon, and cod (which are secondary consumers).

Explanation:

8 0
3 years ago
Read 2 more answers
Explain the structure of the atmosphere ?
tamaranim1 [39]

Answer:

Structure of the atmosphere

The atmosphere can be divided into five layers according to the diversity of temperature and density. They are:

Troposphere

Stratosphere

Mesosphere

Thermosphere (Ionosphere)

Exosphere

Explanation:

Composition of the atmosphere

The atmosphere is made up of different gases, water vapour and dust particles.

The composition of the atmosphere is not static and it changes according to the time and place.

7 0
3 years ago
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