A mutation in which one of the ADH enzymes is overactive causes ________
a. the carrier to be unlikely to become an alcoholic
b. all of the choices
c. acetaldehyde to accumulate
d. the carrier to become flushed and ill after drinking alcohol
b
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In 1909, Charles Walcott discovered fossils in the Burgess Shale of the Canadian Rockies. The area was formed by an underwater mudslide that provided an oxygen free environment, so decomposition was minimal. Why was this site particularly important to the fossil record?
A. It contained fossils from the Cambrian period. B. It contained both vertebrate and invertebrate fossils. C. It contained fossils of well preserved soft tissues of invertebrates. D. It showed that mudslides could occur underwater. E. The first bird fossil, Archaeopteryx, was found here.
Which sequence reflects the locations that a secretory protein will visit on its way from its production to its secretion outside the cell?
A) rough ER, secretory vesicle, Golgi complex, ER vesicle B) rough ER, Golgi complex, smooth ER, ER vesicle C) nucleus, Golgi complex, rough or smooth ER, secretory vesicle D) smooth ER, rough ER, Golgi complex, secretory vesicle E) rough ER, ER vesicle, Golgi complex, secretory vesicle
The HBV genome is a circular dsDNA molecule that consists of ________.
A. one complete but nicked strand B. one complete but nicked strand and a complementary strand C. a complementary strand D. segmented DNA
A private in the U.S. Army is stationed at Ft. Bragg, North Carolina. He has been admitted to the infirmary with complaints of a severe headache and high fever. Upon questioning, he revealed that he had received a tick bite several days earlier. Two days after admission, he starts to develop a rash, beginning on his hands and feet and spreading towards his torso. Which of the following should be considered first in the diagnosis?
A) Epidemic typhus B) Lyme disease C) Rocky Mountain spotted fever D) Tularemia E) Anthrax