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3 years ago

True or false: channel proteins and carrier proteins are both transport proteins

Biology

2 answers:

Ilia_Sergeevich [38]3 years ago

3 0

True. I hope this helps you out Orona! :D :D :D :D

Rom4ik [11]3 years ago

3 0

Yes channel proteins and carrier proteins are both transport proteins so the answer is true

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If the person drank a large volume of water, far more than was needed by the body, predict what would happen to glucose, urea, a

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there would be less of these components in urine

Explanation:

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3 years ago

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The nutrition therapy goals for the individual with diabetes have evolved and have become more flexible and patient centered. The goals from the American Diabetes Association (ADA) 2019 include the following: (2)

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2 years ago

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the chemicals in cigarette smokers are known to cause cancer propose a series of steps that could lead to the development of lun

Aleks [24]

Answer:

Cell deterioration

Explanation:

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3 years ago

Correctly identify each of these definitions or examples as either depolarization or hyperpolarization of the plasma membrane. 1

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Answer:

hyperpolarization
depolarization
hyperpolarization
depolarization
hyperpolarization
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Explanation:

The resting membrane potential is balanced by ion leakage and ion pumping, to get an electrical signal started the membrane potential has to lose its balance. This starts with a membrane channel opening for Na+ since Na+ concentration is higher outside the cell, ions will rush into the cell. This will change the relative voltage inside the cell. The resting potential has a voltage of -70 mV, the sodium cation entering the cell cause it to become less negative. This is known as depolarization.

The concentration gradient for Na+ will continue to enter the cell making the voltage to become positive reaching +30 mV. At the same time, this happens, other voltage-gated channels are also opening, a concentration gradient acts on K+, as well, as it leaves the cell, it takes a positive charge with it making the membrane potential to move back to its resting voltage of -70 mV. This is called repolarization.

For potassium ions to reach equilibrium the membrane voltage needs to be below -70 mV, this leads to a period of hyperpolarization that occurs while the K+ channels are open.

I annexed an image that illustrates this action potential process.

Considering the information given during depolarization there's an increase in the number of sodium leak channels (7) making the inside of the cell more positive (2) increase in the membrane potential (4), this also implies a decrease in the extracellular concentration of potassium (6)

Meanwhile, during hyperpolarization an increase in the extracellular concentration of potassium (3) decreases the membrane potential (1) making the inside of the cell more negative (5).

I hope you find this information useful and interesting! Good luck!

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3 years ago

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Answer:

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Explanation:

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