The black dots that cover strawberries are actually individual fruits. The fleshy and tasty portion of a strawberry derives from the receptacle of a flower with many separate carpels. Therefore, a strawberry is _____
A) both a multiple fruit and an aggregate fruit
B) both a multiple fruit and an accessory fruit
C) both an aggregate fruit and an accessory fruit
D) a simple fruit with many seeds
C
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Gene expression requires the participation of the
following three types of RNA: __________, __________and __________. Fill in the blank(s) with the appropriate word(s).
Which of the following statements concerning the cell cycle is FALSE?
a. The activity of Cdks increases and decreases during the cell cycle. b. Cyclins fluctuate during the cell cycle. c. Cdks are active only when they bind to cyclins. d. The anaphase-promoting complex stimulates the separation of sister chromatids e. M-Cdk inhibits mitosis
Biologists have catalogued all the species on earth, except for a few rare species in remote tropical areas.
a. true b. false
Which of the following refers to the term metabolism?
A) all the reactions in a cell or organism B) all the reactions in a cell that break down molecules only C) all the reactions in a cell that build new molecules only D) all the reactions in a cell that decompose molecules only