The conducting tissues of vascular plants are rigid because they contain ________ in their cell walls
Fill in the blank(s) with correct word
lignin
Biology & Microbiology
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Small molecules that bind directly to mRNAs and effect transcription or translation are binding to regions of the mRNA known as
A) Shine-Delgarno sequences. B) the operator region. C) riboswitches. D) ribozymes. E) allosteric sites.
Biology & Microbiology
R plasmids provide ____
a. antibiotic resistance b. a fertility factor c. transformation ability d. genes necessary for genetic recombination e. nutrients
Biology & Microbiology
Plants cannot ____ in the dark
a. grow b. respire c. move d. utilize chlorophyll e. sense light
Biology & Microbiology
In the lactose operon, the repressor binds to:
a. the lacI coding region. b. the promoter. c. the operator. d. the lacZ coding sequence. e. the lacY coding sequence.
Biology & Microbiology