Which molecules will pass most easily through a cell membrane by diffusion?

a. large, hydrophilic molecules
b. large, polar molecules
c. small, hydrophobic molecules
d. ionic molecules


Ans: c. small, hydrophobic molecules

Biology & Microbiology

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In any ecosystem, short food chains are more efficient than longer ones. Why is this so?

What will be an ideal response?

Biology & Microbiology

The top carnivore is indicated by

a. A. b. B. c. C. d. D. e. E.

Biology & Microbiology

Connective tissues include lymph, ligaments, tendons, and

A) cardiac muscle. B) skin cells. C) cartilage. D) vessel linings. E) exocrine glands.

Biology & Microbiology

Which substance would be unlikely to function as a coenzyme?

a. a water-soluble vitamin b. an iron ion c. glucose d. NAD+ e. a magnesium ion

Biology & Microbiology