How does one assure that all PCR amplicons are double-stranded?
A) By lengthening the final primer extension step from 1–2 minutes to up to 10 minutes.
B) By making sure the dNTPs in the mixture are in excess.
C) By adding DNA ligase to the mixture.
D) By holding the reaction mixture at annealing temperature for about 5 minutes at the end
of the cycle.
A
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Which of the following statements is FALSE regarding exercise and its ability to help manage stress?
A. Exercise enhances one's sense of general well-being. B. Exercise reduces energy levels. C. Exercise reduces anxiety levels. D. Exercise decreases tension.
Some alleles always produce their trait when inherited and are said to be _____
A) dominant B) heterozygous C) homozygous D) recessive
Individuals with an antibody deficiency are more susceptible to infections by all of the following except _____
a. Streptococcus pneumoniae b. Haemophilus influenzae c. Streptococcus pyogenes d. Mycobacterium tuberculosis e. Staphylococcus aureus.
Sunlight shining on your skin increases your body's own manufacture of which vitamin?
A) Niacin B) Vitamin A C) Vitamin K D) Vitamin D