A salamander relies on hydrogen bonding to stick to various surfaces. Therefore, a salamander would have the greatest difficulty clinging to a _____
A) slightly damp surface
B) surface of hydrocarbons
C) surface of mostly carbon-oxygen bonds
D) surface of mostly carbon-nitrogen bonds
B
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Both malaria and yellow fever are transmitted by mosquitoes
Indicate whether this statement is TRUE or FALSE.
Wound infections may result in
A. delayed healing. B. abscess formation. C. extension of bacteria or their products into surrounding tissues or bloodstream. D. aerobic conditions. E. delayed healing, abscess formation AND extension of bacteria or their products into surrounding tissues or bloodstream
A first exposure to an allergen stimulates the immune system to make ________
a. IgM b. IgD c. IgA d. IgE
The interaction between two organisms, called commensalism,
A. always benefits one of the organisms and does not affect the other. B. does not fit either of the definitions of symbiosis. C. is illustrated by the relationship between the shark and the fish that it eats. D. includes all of these statements.