The template for RNA polymerase is ________, and the new RNA chain is ________ to the template
A) an independent RNA segment / parallel and identical
B) DNA / antiparallel and complementary
C) an independent RNA segment / antiparallel and complementary
D) DNA / parallel and identical
Answer: B
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Flagellated protozoans possess a layer of
elastic proteins just beneath the plasma membrane called the
a. pellicle. b. cilium. c. capsule. d. pillus. e. flagellum
Identify the correct order of structures in the vertebrate eye through which incoming light passes before the impulse
travels to the brain. 1) aqueous fluid 2) cornea 3) lens 4) optic nerve 5) photoreceptors 6) vitreous body a. 3 ? 6 ? 2 ? 1 ? 5 ? 4 b. 1 ? 3 ? 2 ? 6 ? 4 ? 5 c. 2 ? 6 ? 3 ? 1 ? 4 ? 5 d. 2 ? 1 ? 3 ? 6 ? 5 ? 4 e. 3 ? 5 ? 1 ? 6 ? 2 ? 4
Gardasil is marketed as a cervical cancer vaccine, but it is actually a human papilloma virus (HPV) vaccine. Why is this done?
A. Genital warts is a sign of cancer. B. HPV in the cervical epithelial cells may cause the cells to become cancerous. C. Cancer cells are particularly susceptible to viral infection. D. The virus multiplies more rapidly in cancerous cells.
The immediate results of the widespread use of pesticides and fertilizers included ________, but long-term results included ________
A) dramatic increases in crop yields; the evolution of pest resistance B) the increased spread of malaria; delayed resistance to pesticides C) global declines in agricultural productivity; worldwide distribution of DDT D) global declines in undesirable pests such as mice and rats; increases in these pests