Ribosomes are ____
a. membrane-enclosed organelles
b. attached to the smooth endoplasmic reticulum
c. involved in polypeptide transport
d. required for DNA synthesis
e. involved in polypeptide synthesis
ANSWER: e
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A. M B. S C. G1 and G2 D. interphase
Both the large waves and starvation of marine
mammals was caused by a. El Niño. b. El Diablo. c. El Minator. d. El Laborador. e. none of these.
Which of the following statements about the inner mitochondrial membrane is false?
A) ATP synthase is found in the inner mitochondrial membrane. B) The inner mitochondrial membrane plays a role in the production of pyruvate. C) Electron carriers are found in the inner mitochondrial membrane. D) A gradient of H+ exists across the inner mitochondrial membrane.
Which of the following describes a complete defense system?
A) antibodies of the adaptive humoral immune response and interferons B) antibodies of the adaptive humoral immune response and components of innate immunity C) phagocytosis only D) complement system only