Answer the question using the accompanying figure. In the internal leaf structure, the structure labeled "1" is ____
a. a vascular bundle
b. spongy mesophyll
c. epidermis
d. a stoma
e. palisade mesophyll
ANSWER: c
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A cow converts the energy of glucose into the
energy of ATP. What happens to most of the energy in that conversion?
a. it remains with the glucose- it can’t be extracted. b. it is lost as heat energy. c. it is within the ATP molecule. d. it is recycled back into glucose. e. more than one of these is possible
After yet another patron dripped sweat on her desk, the clerk at the gym complained, "It's gross working at a gym, with everyone sweating all the time." "Yes," the manager replied, "and it's probably costing us more for ________, but I'll bet we're saving on ________."
A. the water cooler; towels B. weight machines; treadmills C. towels; heating D. the water cooler; air conditioning
The genes of the lac operon code for proteins associated with lactose metabolism. Which of the lac gene products is associated with transport of lactose into the cell?
A) ?-galactosidase B) transacetylase C) galactoside permease D) ?-lactase E) lactose translocase
What can happen if an enzyme is altered, even slightly?
A) It will continue to catalyze reactions, but at a slower rate. B) It will still catalyze reactions, but only at a higher temperature. C) The amount of activator required to "turn on" the enzyme will need to increase. D) Its active site may change, causing the enzyme to stop functioning. E) It will catalyze reactions too quickly, potentially causing illness for the individual.