What is the role of primers in the PCR techniques?
A. To allow single strands of DNA to bind together
B. To separate strands of double-stranded DNA
C. To target specific areas of DNA
D. To add free nucleotides to the newly formed DNA molecule
Answer: C
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Light enters the eye’s interior through the
__________, an adjustable opening in the center of the muscular, doughnut-shaped iris. Fill in the blank(s) with the appropriate word(s).
Refer to the accompanying figure. Which structure would carry blood to the systemic (body) circulation?
a. 1 b. 2 c. 6 d. 7 e. 14
Transcription is to mRNA as translation is to _______.
A. Messenger RNA B. Transfer RNA C. Ribosomal RNA D. Protein
When fermentation occurs in grapes left on the vine, the final product is the ethanol used to make wine. When fermentation occurs in our muscles, the final product is:
a) oxygen. b) 2 lactic acid molecules. c) 2 NADH molecules. d) 2 ATP molecules. e) ethanol as well.