Briefly (one or two sentences) explain why the following statements are either t

Question

Briefly (one or two sentences) explain why the following statements are either true or false.

24. True/False Transport by carrier proteins can either be active or passive, whereas transport by channel
proteins is always passive.
25. True/False The process of opening “gated” channel proteins involves conformational changes that are
driven by energy from ATP hydrolysis.
26. True/False Microtubules exhibit an intrinsic polarity when assembled in a test tube that is similar to
that observed in microtubules assembled inside the cell.

Explanation / Answer

24. TrueTransport by carrier proteins can either be active or passive, whereas transport by channel
proteins is always passive.

25. True The process of opening “gated” channel proteins involves conformational changes that are
driven by energy from ATP hydrolysis.

26.False Microtubules exhibit an intrinsic polarity when assembled in a test tube that is similar to
that observed in microtubules assembled inside the cell.

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