Which property of water enables living things to survive in ponds covered with ice?
a. high heat of vaporization
b. high specific heat
c. degree of surface tension
d. cohesion
e. greatest density at 4oC
E
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The protein invasin is associated with
A) Yersinia psuedotuberculosis. B) the construction of an integrin network in bacteria. C) plasmodemata. D) tight-junction ridge formation. E) lubrication of joints.
Which of the following is(are) true regarding
whale sensory systems? a. Like fishes, they use lateral line systems for navigation. b. Their jaws pick up sound vibrations in the water and transmit them to their middle ears. c. They collect sound waves using external ears. d. All whales have auditory canals leading to their middle ears. e. All of these are true
What was the original purpose of the voyage of the HMS Beagle?
A) to add to the general knowledge of the animals and plants on Earth B) to gather physical evidence in support of the theory of evolution C) to chart the coast and harbors of South America D) to do experiments to test Lamarck's view of inheritance of acquired characteristics
Cultures grown from cells of a dissociated tissue are called
a. normal cell lines. b. transformed cell lines. c. primary cell cultures. d. immortal cell lines.