With each change in trophic level we can expect a ____% transfer of biomass
a. 5
b. 10
c. 25
d. 50
e. 20
B
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The cohesion-tension theory explains that water is moved upward in plants by means of ________
a. all of the choices b. hydrolysis of ATP fueling active transport c. positive pressure pushing from engorged roots d. tension from transpiration
Glucose and fructose ____
a. form rings with the same number of carbon atoms b. have two oxygen atoms as part of their ring structure c. have identical functional groups d. contain the same number of hydrogen atoms and hydroxyl groups e. form the same polysaccharide molecule
Which of the following are considered more
primitive based upon the structure of their limbs? a. bats b. reptiles c. porpoises d. penguins e. birds
Biologists use a classification system to group organisms in part because organisms
a. are going extinct b. are very numerous and diverse c. are too much alike d. share too many derived characteristics