The small circular molecules of DNA commonly found in bacteria are called ________.
A. plastids
B. chromatids
C. plasmids
D. loops
Answer: C
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Carrying capacity is _____
A) seldom reached by marine producers and consumers because of the vast resources of the ocean B) the maximum population size that a particular environment can support C) fixed for most species over most of their range most of the time D) determined by density and dispersion data E) the term used to describe the stress a population undergoes due to limited resources
Cloning vectors can be distinguished from expression vectors by
A) carrying ori genes for replication of the cloned sequence. B) having a multiple cloning site (MCS). C) having a high copy number per cell. D) lacking a promoter site upstream of the insertion site.
Which of the following sigma factors would be expected to associate with RNA polymerase after increasing the incubation temperature of an E. coli culture from 30°C to 42°C?
A. ?28 B. ?32 C. ?38 D. ?42 E. ?54
Tinbergen's wasp experiments demonstrated that wasps find their nests by ____ cues
a. olfactory b. auditory c. visual d. both olfactory and visual e. both magnetic and auditory