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Bess [88]
2 years ago
8

_The endplate potential (EPP) at the frog neuromuscular junction occurs because ACh simultaneously increases the conductance of

the postsynaptic membrane to Na and K
Biology
1 answer:
Hoochie [10]2 years ago
5 0

Complete question:

The endplate potential (EPP) at the frog neuromuscular junction occurs because ACh simultaneously increases the conductance of the postsynaptic membrane to Na and K

  • True
  • False

Answer:

TRUE

Explanation:

The Acetylcholine neurotransmitter is released from the presynaptic cell by the process of exocytosis.

Once the molecule is in the intercellular space, it moves forward the postsynaptic membrane to join its receptor in the motor plate.

Once the joining has occurred, the receptor acquires a channel shape allowing the ion transference that will make possible the modification of the action potential. Ions traffic will consist of the pass of sodium and calcium to the interior of the cell and potassium to the exterior. Quantitatively, the interchange Na-K is the most significant.

K+ follows a concentration gradient, while Na+ follows an electrochemical gradient. The interchange results in an increase of positive charges in the interior of the muscular cell.

Whenever there is a sufficient number of Acetylcholine receptors are active, the depolarization threshold of the motor endplate is exceeded. This activates an action potential that extends to the rest of the muscle membrane.

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Prior to 1900, sea levels rose at maximum, _______ per year. since 1900 sea levels have risen _______ per year. a. 4 cm, 11 cm b
Aleks [24]

Prior to 1900, sea levels rose at maximum, 4 cm per year. Since 1900 sea levels have risen 11 cm per year.

<h3>How sea level is measured?</h3>
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  • The height of the sea as measured along the shore in relation to a particular place on land is what tide stations all around the world tell us about what is happening locally.
  • NASA uses satellites to measure sea level all over the world.
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5 0
2 years ago
The final electron acceptor of the electron transport chain that functions in aerobic oxidative phosphorylation is
labwork [276]

Answer: a. oxygen

Basically what (/the) ETC and oxidative phosphorylation is, is the products of the Krebs cycle being oxidized and oxygen receiving electrons. And when the phosphorylation part of oxidative phosphorylation occurs is when ADP gains its third phosphate group becoming ATP.

Forgive me for this poor response I was trying to be quick and it resulted in this vague and disorganized mess. To properly explain the ETC and oxidative phosphorylation it would be best to start from the beginning and explain all the stages of Aerobic respiration. Then it would be easier to Segway in to this final stage which would definitely take 2-3 descriptive paragraphs to cover.

8 0
3 years ago
Some archaea (single cell organisms) live in extremely salty water such as the Great Salt Lake or the Dead Sea. Most types of ce
kaheart [24]
Halophiles are extremophiles that thrive in environments with very high concentrations of salt. <span>Halophiles prevent this loss of water by increasing the internal osmolarity of the cell by accumulating </span>osmoprotectants<span> or by the selective uptake of potassium ions. Hope this helps.</span>
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8 0
3 years ago
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In a few sentences, describe how you would design an experiment to determine whether elephants can detect and interpret the call
miss Akunina [59]

"If I heard a herd of elephants talking to one another and being together regularly, I would capture their noises. Then I would play them into the ground at a separate spot far away from the herd of elephants. I would observe the elephants' reactions while I recorded them by playing various recordings through the ground (ex. if they freeze in place when they feel the vibrations, how they react afterwards, etc.). To compare and analyze the elephants' behavior, I would record this information and repeat the procedure several times."

Behavior- The reactions of a complete live organism to internal and/or external stimuli are internally coordinated behaviors.

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3 0
1 year ago
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vazorg [7]

Answer:

The correct answer is option 3. removal of hydrogen atoms from lactic acid.

Explanation:

In anaerobic conditions, it ferments to generate lactic acid. It is two way or reversible process in which oxidation of lactic acid produces pyruvic acid and NADH.

This process involves the removal of hydrogen atoms from the lactic acid and produces NADH and H⁺ in the presence of lactate dehydrogenase enzyme and convert into pyruvic acid.

Thus, the correct answer is option 3. removal of the hydrogen atoms from lactic acid.

4 0
3 years ago
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