Anabolic reactions may be characterized as
A) exergonic.
B) breaking large molecules into smaller molecules.
C) forming large molecules from smaller molecules.
D) producing ATP.
E) breaking large molecules into smaller molecules to produce ATP.
C
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The alternative pathways of photosynthesis using the C4 or CAM systems are said to be compromises. Why?
A) Each one minimizes both water loss and rate of photosynthesis. B) C4 compromises on water loss and CAM compromises on photorespiration. C) Both minimize photorespiration but expend more ATP during carbon fixation. D) CAM plants allow more water loss, while C4 plants allow less CO2 into the plant. E) C4 plants allow less water loss, but CAM plants allow more water loss.
Which of the following best distinguishes between annuals, biennials, and perennials?
A. how tall they grow B. the number of flowers they produce C. the amount of root development D. the environment they grow in E. the time from seed germination to seed production
Sensory adaptation
a. increases one's sensitivity to changes in environmental stimuli. b. increases one's sensitivity to constant stimuli. c. is primarily associated with pain receptors. d. functions the same way in all types of sensory receptors. e. is unique to predator animals.
In 1964, Nirenberg and Leder used the triplet binding assay to determine specific codon assignments. A complex of which of the following components was trapped in the nitrocellulose filter?
A) ribosomes and DNA B) sense and antisense strands of DNA C) free tRNAs D) charged tRNA, RNA triplet, and ribosome E) uncharged tRNAs and ribosomes