A difference between an acid and a base is that
A. acids are harmful and bases are not.
B. acids release hydroxide ions and bases release hydrogen ions.
C. acids have a high pH value and bases have a low pH value.
D. acids have a low pH value and bases have a high pH value.
D. acids have a low pH value and bases have a high pH value.
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The chemical difference between dideoxyribonucleotides used in Sanger sequencing and the deoxyribonucleotides
normally found in DNA is the presence of a(n) _____ in the deoxyribose sugar of dideoxyribonucleotides.
a. 3' – H rather than – OH b. 5' – H rather than – OH c. 5' – OH rather than – H d. 5' – H rather than – OH e. 3' – COOH rather than – OH
ACTH (corticotropin)
a. is secreted by the posterior pituitary. b. has target cells in the autonomic nervous system. c. has target cells in the adrenal glands d. has target cells in the adrenal medulla. e. initiates the autoimmune response.
The rungs of the DNA ladder are formed by base pairs
A. joined by covalent bonds. B. joined by hydrogen bonds. C. joined by ionic bonds. D. NOT joined to each other.
Encephalitis is most commonly caused by a ________.
A. bacterium B. protozoan C. helminth D. virus