Dinosaurs flourished during the ____ era
a. Archaean
b. Paleozoic
c. Mesozoic
d. Cambrian
e. Cenozoic
ANSWER: c
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A fish that has been salt-cured subsequently develops a reddish color. You suspect that the fish has been contaminated by the extreme halophile Halobacterium
Which of these features of cells removed from the surface of the fish, if confirmed, would support your suspicion? 1. the presence of the same photosynthetic pigments found in cyanobacteria 2. cell walls that lack peptidoglycan 3. cells that are isotonic to conditions on the surface of the fish 4. cells unable to survive salt concentrations lower than 9% 5. the presence of very large numbers of ion pumps in its plasma membrane A) 2 and 5 B) 3 and 4 C) 1, 4, and 5 D) 2, 3, 4, and 5
Muscles that are constantly active, such as those maintaining our body posture, have a high proportion of
A) fast, fatigue-resistant fibers. B) fast, fatigue-susceptible fibers. C) slow, fatigue-resistant fibers. D) slow, fatigue-susceptible fibers.
Which of the following joint types is not correctly matched with its example?
A. Combination joint-knee joint B. Ball-and-socket joint-femur and pelvis C. Hinge joint-finger joint D. Gliding joint-vertebral column E. Immovable joint-skull sutures
The normal habitat for Vibrio cholerae is (humans/animals/water)
What will be an ideal response?