One line of evidence for endosymbiosis is that chloroplasts resemble ____
a. anaerobic bacteria
b. aerobic bacteria
c. fungi
d. protists
e. cyanobacteria
ANSWER: e
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A gene that undergoes rho-dependent termination has a mutation in the rut site. How will this influence transcriptional activity?
A. Transcription will terminate normally as Rho termiantion relies on the rut site to enhance termination; it is not essential for termination B. Transcription will stop immediately because RNA polymerase will sense there is a mutation C. Transcription will continue until another termination sequence, either Rho dependent or independent is reached D. There will be no transcription initiation
Do you agree with the practice of engineering transgenic animals to be models of human disease? Why or why not?
What will be an ideal response?
What are some challenges land plants face compared to life in the water?
A. Obtaining resources from the air and soil instead of from water B. Obtaining and retaining moisture C. Staying upright against the pull of gravity D. All of the above are challenges faced by land plants.
The region that determines the class of antibody is indicated by number
a. 1. b. 2. c. 3. d. 4. e. 5.