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Neporo4naja [7]
3 years ago
14

The cytoplasmic membrane is termed "semi-permeable" because some substances, like water and alcohols, can pass freely through wh

ile others, like sugars, amino acids, and ions, cannot. What molecular characteristics largely determine whether or not a substance can pass through the membrane?
Biology
1 answer:
DENIUS [597]3 years ago
3 0

Answer:

The correct answer is- size and hydrophobicity

Explanation:

The cell membrane is a semi-permeable membrane which means it only allows the transport of selective molecules across it. Some molecules can cross the membrane freely but some require transporters.

The passage of molecules is highly dependent on the size and hydrophobicity of the molecule. The molecule which is smaller in size, hydrophobic and neutral can freely diffuse through the plasma membrane.

The molecule which is hydrophilic, large and charged requires transporter protein to be transported. Therefore the correct answer is size and hydrophobicity.

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The smooth endoplasmic reticulum does not have ribosomes attached.it is involved in the production of non-protein molecules eg lipids and fats.

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