In eukaryotes, each type of RNA polymerase recognizes a different
A. start codon.
B. promoter.
C. release factor.
D. transcription factor.
E. stop codon.
Answer: B
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Researchers can deliver genes into plants by using ____
a. PCR b. DNA sequencing c. electric or chemical shocks d. gel electrophoresis e. DNA segmentation
Cholesterol can be remodeled into
a. bile salts. b. sex hormones. c. steroids. d. vitamin D. e. all of these.
Antibiotic resistance genes are often included on plasmid vectors because
A) antibiotic resistance is used to select for bacteria cells containing the vector. B) antibiotic resistance can be used to control the growth of the genetically modified organism. C) antibiotics are often present in humans being treated for disease. D) only bacteria are affected by antibiotics. E) antibiotic resistance genes can be used as transcriptional reporters.
_____ is known as a cardiac pacemaker.
A. Diastole B. Systole C. Cardiac muscle D. SA node E. AV node