Either strand of a DNA molecule can be used as a template to reconstruct the other because the two strands of a DNA molecule are ________.
A. antiparallel
B. complementary
C. bound
D. identical
Answer: B
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The life cycle of a sexual reproducing organisms includes:
A. mitosis and meiosis. B. mitosis, meiosis, and fusion of the gametes. C. meiosis and fusion of gametes D. only mitosis E. only meiosis
Which of the following respiratory control centers allows you to hold your breath before diving into a
swimming pool?
a. aortic bodies b. carotid bodies c. receptors of the medulla d. the limbic center of the brain e. higher brain centers of the cerebrum
Successive cell divisions convert the zygote into a
multi-cell embryo during a. meiosis. b. parthenogenesis. c. embryonic induction. d. cleavage. e. invagination.
Blood flows into the ________ and components of plasma are forced through the walls of this specialized capillary into the nephron.
A. Bowman's capsule B. collecting duct C. loop of Henle D. glomerulus