The sum total of all chemical reactions occurring in a cell is called
A. metabolism.
B. catabolism.
C. anabolism.
D. None of the choices are correct.
Answer: A
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Smoking cigarettes causes lung cancer because
A) nicotine destroys the membranes of alveoli, the microscopic air sacs. The alveoli expand, and the person cannot completely exhale. B) nicotine is deposited as black, sticky tar in respiratory passages. C) nicotinic receptors in the lungs bind carcinogens in cigarette smoke. D) nicotine binds the A1 allele of the dopamine D(2) receptor.
The various techniques by which scientists manipulate DNA in the lab are termed ________.
A. genetic engineering B. biotechnology C. recombinant DNA D. gel electrophoresis E. gene probes
Killifish and pike-cichlids raised in natural
conditions will a. affect the age at first reproduction of the guppies that live with them. b. prey on guppies. c. affect the growth rate of guppies. d. affect the evolution of the guppies’ life history traits. e. do all of these.
A scientist discovers a new application for a common medical procedure that involves taking tissues from one patient and placing them into another patient. The procedure always results in a full recovery for the patient receiving the tissue but results in long-term disability for the donor 10% of the time. According to bioethics, making the decision as to whether this procedure should be allowed in this country should be the responsibility of
What will be an ideal response?