Endospores are dormant and require no nutrient or energy.
a. true
b. false
Ans: a. true
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Chromatids separate during
(a) prophase. (b) telophase. (c) cytokinesis. (d) anaphase.
Which of the following is true of the topoisomerases found in bacteria?
A. Type I topoisomerases introduce single-stranded breaks and as a result change the linking number by 1. B. Type I topoisomerases introduce single-stranded breaks and as a result change the linking number by 2. C. Type II topoisomerases introduce single-stranded breaks and as a result change the linking number by 2. D. Type II topoisomerases introduce double-stranded breaks and as a result change the linking number by 1. E. Type I topoisomerases are the only category that can introduce negative supercoils.
Which of the following terms is most closely related to genetic complementation?
A. Reverse transcription B. Phenotypic rescue C. Naked DNA D. SOS response
Which one of the following correctly describes the order of stem cells from the lowest degree of flexibility to the highest degree of flexibility?
A) multipotent < unipotent < pluripotent < totipotent B) unipotent < multipotent < totipotent < pluripotent C) unipotent < multipotent < pluripotent < totipotent D) pluripotent < unipotent < totipotent < multipotent