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Hello there, students.
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Today we're going to be discussing about membranes in regards to a chapter on cells, the working units of life.
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So i drew out a drawing or an attempt of a drawing of the cell membrane within the structure within the animal cells and a structure within for the plant cells.
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And you can tell which is which, how they both are different.
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So today's question, they are asking how many membranes would a molecule need to go through? so, so that's all they're asking.
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So we'll scroll down and see what they're talking about.
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So they're bringing up one question like, how many molecules would a, i mean, how many membranes would a molecule need to go through from the interior? chloroplast or the stroma that's the inner part of chloroplast to the interior part of the mitochondrion or the matrix so we'll scroll up to where we see the chloroplasts and the mitochondria and we can see inside this stochroma and inside here is the matrix so how many membranes what a molecule need to pass through to move into from the interior chloroplasts to the interior mitochondria.
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I'll give you a moment to look at this again and you can decipher the number you believe a molecule need to go through.
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Have you put down your number or made your guess and you can pause it if i'm rushing it you can pause and write your number okay so if you said four you are correct because two and needs to go through it two times through the chloroplast and two times in the mitochondrida i'm chondrion so it only takes four it only needs to go through four membranes so the next question is is how many molecules, i mean, how many membranes would it take for a molecule need to go through from the interior of a lysosome to the outer part of the cell? so i'll scroll up where we can find the lysosome.
02:51
So up here in the animal cell, you see the lysosome.
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And we can tell we can safely say this is the outer part of the cell.
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So looking from this image, how many membranes do you believe a molecule needs to get from the lysosome inside the lysosome to out of the cell? you can pause and write down your number and come back to and come back or play the video when you've come up with your number.
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Okay, so let me scroll down.
03:33
So number wise, if you said two, you are correct because it's going through the lysosome membrane and through the cell membrane in via a vesicose...