CAM (crassulacean acid metabolism) plants such as cacti differ from standard C4 plants such as corn in which of the following way?
A. CAM plants minimize photorespiration whereas C4 plants do not.
B. CAM plants use both mesophyll and bundle sheath leaf cells for photosynthesis whereas C4 plants do not.
C. CAM plants are more efficient at producing sugar than C4 plants regardless of environmental conditions.
D. CAM plants produce a 4-carbon molecule in the first step of carbon fixation, but C4 plants do not.
E. CAM plants are limited to producing CO2 for the Calvin cycle during the day, while C4 plants produce CO2 for the Calvin cycle both during the day and at night.
E. CAM plants are limited to producing CO2 for the Calvin cycle during the day, while C4 plants produce CO2 for the Calvin cycle both during the day and at night.
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If you tracked an individual X chromosome from a male to his first generation offspring, then to his second generation offspring, what pattern would you see?
A. His X chromosome would be found only in his daughters and granddaughters. B. His X chromosome would be found only in his sons and grandsons. C. His X chromosome would be found only in his daughters and grandsons. D. His X chromosome would be found only in his daughters, then in both his granddaughters and grandsons. E. His X chromosome would be found only in his sons, then in both his granddaughters and grandsons.
Which of the following increases the risk of permanent liver damage with hepatitis B infection?
A. coinfection with human herpesvirus 4 B. coinfection with hepatitis D virus C. coinfection with HHV-6 D. coinfection with human herpesvirus 4 and hepatitis D virus E. coinfection with hepatitis D virus and HHV-6
How many bones does the carapace of most turtles contain?
a. 40 b. 50 c. 60 d. 70
Which of the following plant hormones is used to prolong the life of flower cuttings and stored vegetables?
A. auxins B. IAA C. cytokinins D. ethylene