Which of the following would you NOT find in a plant cell?

A) pectin
B) polysaccharides
C) collagen
D) lignin


Answer: C

Biology & Microbiology

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Peroxisomes

A) are not derived from the endoplasmic reticulum. B) are bounded by double membranes. C) possess acid phosphatase activity. D) possess amylase activity. E) all of the above

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What characteristics of coastal seas allow the area to support a larger number of high-level consumers? a. High productivity and shorter food chains

b. High productivity and large populations of prey. c. Shorter food chains and large populations of prey. d. High productivity and high species diversity.

Biology & Microbiology

Duchenne muscular dystrophy (MD) is inherited from an X-linked recessive allele. What is the probability that a son with Duchenne MD inherited this disease from his biological father?

a. 0 b. 1/4 c. 1/2 d. 1/8 e. 1/16

Biology & Microbiology

Which change is most important in stomatal closing?

a. declining sucrose concentrations b. rising sucrose concentrations c. rising potassium concentrations d. declining potassium concentrations e. declining chloride concentrations

Biology & Microbiology