In another experiment in which the roots were treated for a longer time, you find that root hairs were initiated in the presence of the control solution and actinomycin D, but that they were absent when treated with cycloheximide. From this you can conclude that:
A) Both transcription and translation are required.
B) Only transcription is required.
C) Only translation is required.
D) More data is needed.
Ans: C) Only translation is required.
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Sequencing all the DNA in the fluid that leaks from the bottom of a garbage can is an example of
A) stem cell science. B) gene expression profiling. C) metagenomics. D) DNA profiling.
The letter “A” in the above figure represents the
a. style. b. ovary. c. stigma. d. anther. e. filament.
Which of the following is a feature shared by viruses and living organisms?
A) possession of a genome that directs synthesis of materials necessary for replication B) presence of cytoplasm C) metabolic capability D) responsiveness E) the ability to increase in size
Which of the following infectious particles do not have protein in their structure?
A. bacteriophages B. prions C. animal viruses D. viroids E. both prions and viroids