Answer to Question #57515 in Biology for Misha Jain

Question #57515
Read the following statements (A-D) :-
(A) Diffusion is a slow process and is dependent on living system.
(B) Substance soluble in lipids diffuse through the membrane faster.
(C) Transport rate reaches minimum, when all of the protein transporters are being used.
(D) Translocation is mediated by xylem only.
How many of the above statements are Incorrect?

(1) One (2) Two (3) Three (4) Four
Expert's answer
(3) Three statements are incorrect
Statement (A) is incorrect because diffusion does not depend on living system. It can occur in non-living systems as well.
Statement (B) is correct;
Statement (C) is incorrect because when all transport proteins are used, the transported molecules are carried by the maximal number of transporters. Thus, the transport rate of substance is maximal.
Statement (D) is false because translocation is primarily related to phloem.

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