An animal that kills for food is a
A. predator.
B. parasite.
C. scavenger.
D. All of these answers are true.
A. predator.
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Glucose
A. is preferentially used over lactose in E. coli as a result of catabolite repression. B. levels are directly sensed via catabolite repression. C. levels are the inverse of cAMP levels. D. levels directly affect the production of lactose dehydrogenase. E. is preferentially used over lactose in E. coli as a result of catabolite repression AND glucose levels are the inverse of cAMP levels.
The movement of sucrose and H+ into the cell by the same membrane protein reflects the actions of what type of transporter?
A. voltage-gated channel. B. mechanosensitive channel. C. uniporter. D. symporter. E. antiporter.
The various flower parts are attached to a modified branch called the:
a. style b. receptacle c. stigma d. filament e. sepal
List the 3 parts that make up one nucleotide: