____ contain a waterproof fatty material called suberin
a. Aquaporins
b. Casparian strips
c. Vascular cylinders
d. Vessel elements
e. Plasmodesmata
b
Biology & Microbiology
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________ is a bacterial plasmid vector.
A. Lambda B. T4 DNA ligase C. SV40 D. pUC19
Biology & Microbiology
Repair of an apurinic or apyrimidinic site in DNA by AP endonuclease must be completed by the action of
A. DNA polymerase I. B. RecA protein. C. UvrABC endonuclease. D. None of the choices are correct.
Biology & Microbiology
Lateral roots arise from the
a. endodermis. b. root cap. c. quiescent center. d. pericycle. e. root hairs.
Biology & Microbiology
In DNA, phosphate groups bond to
A) other phosphate groups. B) ribose. C) adenine. D) deoxyribose. E) pyrimidine bases.
Biology & Microbiology