Spindle fibers (microtubules) attach to a chromosome's ________ during mitosis.
A) centromere
B) telomere
C) genomere
D) euchromatin
A) centromere
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Which of the following does not reflect the action of an effector molecule on the transcription of a gene?
A. An effector binds to a repressor to decrease the level of transcription. B. An effector binds to a repressor to increase the level of transcription. C. An effector binds to an activator to increase the level of transcription. D. An effector binds to a polymerase to increase the level of transcription.
Which rapidly growing Aspergillus spp. (2 to 6 days) best describes a mold that produces a fluffy-to-granular, white-to-blue green colony?
a. A. niger b. A. flavus c. A. fumigatus d. A. terreus
Enveloped viruses ____
a. generally lyse host cells as they are released b. synthesize envelope lipids as they replicate within the host cell c. acquire their envelope as they bud from the host cell d. acquire their envelope as they enter the host cell e. always contain DNA genomes
Xylem and phloem are types of
a. ground tissue. b. protoderm. c. vascular tissue. d. meristem. e. dermal tissue.