1 the cell membrane immediately adjacent to an action...

The cell membrane immediately adjacent to an action potential depolarizes because of: a. membrane permeability b. sodium ions c. local currents d. membrane receptors 2. What is produced when depolarization of a cell membrane reaches threshold? a. membrane receptors are exposed b. a new action potential is produced c. the absolute refractory period d. an existing action potential is stopped 3. The absolute refractory period ensures that action potential propagation is: a. capable of spreading in either direction b. only in one direction c. blocked from certain areas of the cell membrane d. spread at a prescribed speed 4. The inside of the cell membrane becomes negative at the time of an action potential. True or False? 5. In neurons, protein pumps allow substances to move passively down their concentration gradients. True or False?

Transcript

0:00 Hello students.

00:01 Today we'll be solving a question in biology.

00:04 As you can see from the question, this question has five sub -questions which we have to solve by giving the best answer.

00:12 So the first question says that the cell membrane immediately at potential depolarizes because of.

00:17 And the options they've given us are membrane permeability.

00:23 Okay, membrane permeability.

00:29 The second option they've given us is sodium iodine.

00:33 Ions third option they've given us is local currents and option the brain receptors okay memory receptors so in this question you're asking us the cell membrane immediately action potential depolarizes because of and the answer to that can be option b sodium ions this is because the sodium pump okay pump allows more sodium to enter the cell and then depolarizes depolarizes the cell membrane.

01:29 Because of this, we can confirm that the sodium ions are responsible depolarization of cell membrane.

01:37 The second question they've given us is, what is produced when deep reaches threshold? and the options they've given us are membrane receptors, okay, m membrane resectors.

01:55 Option b is action potential is produced.

01:59 Okay, so production of action potential.

02:09 Option c is the absolute refractory period.

02:17 Absolute refractory period.

02:25 And option deep day given us is existing action potential stopped.

02:30 So we can write as stopping of action potential which was existing.

02:39 What is produced when depolarization of a cell membrane reaches is threshold? now, threshold means from the word threshold, we can understand that it comes to a minimum.

02:53 So when depolarization of threshold comes to a minimum standard, we can say that there is a production of action potential.

03:03 So, therefore, option b is the right answer.

03:07 As when depolarization reaches the threshold, okay? when depolarization reaches the threshold, then there is a production of new energy signal...

Question

Please give Ace some feedback