What are eukaryotic genes composed of?
A) RNA
B) organelles
C) RNA and DNA
D) DNA
D
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How does RNA polymerase II get involved in transcription?
a. It binds directly to the eukaryotic promoter sequence. b. It binds directly to the TATA box. c. It binds to transcription factors in the nucleus, and the complex then binds to the promoter. d. Transcription factors bind to the promoter, and they in turn bind to RNA polymerase II. e. Some transcription factors bind to the promoter, others bind to RNA polymerase II, and then the two groups of proteins bind to each other.
Why do polar bodies form?
A. They nurse the egg as it leaves the follicle. B. This is extra chromosomal material representing the X chromosome in each female cell. C. They orient the sperm toward the egg. D. They allow a reduction in chromosomes while preserving all the food for one egg. E. They orient the egg for penetration by the sperm.
Bacteria of the genus Mycoplasma lack cell walls. What sort of environment do they require for survival?
A) low temperature B) hypotonic C) isotonic D) hypertonic E) a biofilm
_____ is an example of a proto-oncogene
Fill in the blank(s) with the appropriate word(s).