Which of the following organisms has the largest number of protein-coding genes?
a. E. coli (bacteria)
b. Saccharomyces cerevisiae (yeast)
c. Homo sapiens (human)
d. Oryza sativa (rice)
e. Drosophila melanogaster (fruit fly)
D
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Gibberellin induces
a. plants to bend toward the light. b. cell division in meristems. c. hydrolysis of starch in seeds. d. fruits to ripen. e. more than one of these to occur
Gram staining divides bacteria into __________
groups based on differences in the composition of their __________. a. two; DNA b. four; capsules c. two; cell walls d. four; cell walls e. two; plasma membranes
If a mutation decreased the radius of a xylem vessel threefold, there would be an 81-fold increase in the volume of liquid moving through the vessel.
Answer the following statement true (T) or false (F)
What is the main function of the ribosomes in the cell?
A. to synthesize DNA B. to provide strength and structural support for the cell membrane C. to synthesize proteins D. to break down proteins into individual amino acids E. to form the nuclear envelope