____ have no representative organisms that produce amniotic eggs.
A. Mammals
B. Amphibians
C. Reptiles
D. Birds
B. Amphibians
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The process of transpiration is driven by
a. passive transport. b. sunlight. c. root pressure. d. upward pressure as sugar is forced into the roots. e. pumping by the xylem cells.
Phenylketonuria is an example of a genetic disease in which
a. a single enzyme is not functional. b. inheritance is sex-linked. c. two parents without the disease cannot have a child with the disease. d. mental retardation always occurs, regardless of treatment. e. a transport protein does not work properly.
The idea that behaviours (e.g. eating and drinking) are motivated by their anticipated pleasurable effects
What will be an ideal response?
Enzymes work by lowering the ________ energy of a reaction.
a) kinetic b) potential c) released d) activation