Which of the following is a polysaccharide?
A) glucose, the chief cellular energy source
B) cellulose, the primary component of plant cell walls
C) fructose, one of the most important blood sugars
D) insulin, the chief blood sugar regulator
E) sucrose, one of the most important blood sugars
B) cellulose, the primary component of plant cell walls
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What are the short retinal photoreceptors responsible for color vision called?
A. rods B. cones C. bipolar cells D. glial cells E. ganglion cells
What do the three nonsense codons code for?
a. lysine b. random c. nothing d. initiation factors
What term refers to the average rate at which organisms produce offspring?:
a. doubling time b. natality c. emigration d. stasis e. survivorship
Which of the following cell types does not move materials through the body of the plant?
A. Sieve tube members B. Xylem vessel members C. Sclerenchyma D. Sieve cells E. Tracheids