How does DNA differ from RNA?
A. RNA uses only purines
B. RNA uses a different five-carbon sugar
C. RNA has a contains different sized phosphate groups
D. RNA has multiple bases attached to the sugar
B
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The donor cell makes ___________ whose function is to bring F- cells close enough to transfer a ___________ to the recipient.
A. a sex pilus, single strand of DNA B. a sex pilus, double strand of DNA C. an F factor, fertility plasmid D. an F factor, replicated F factor E. a sex pilus, bacterial chromosome
Why are most cells small?
a. Because they don't produce enough energy to grow larger. b. Because the body has limited space. c. Because the surface-to-volume ratio must be adhered to for proper cell function. d. Because there aren't enough electrolytes to support large cells. e. Because large cells would not be able to undergo mitosis.
Clusters of phloem and xylem tissues are called
A. root tissue B. ground tissue C. pith D. vascular bundles
Ringworm is caused by what type of organism?
a) Protozoan b) Helminth c) Fungus d) Arthropod