The positively charged ion, potassium, and the
negatively charged ion, fluoride, will form
what kind of bond?
a. ionic
b. polar covalent
c. nonpolar covalent
d. hydrogen
e. isotonic
A
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The digestive enzyme pepsin works in the acidic environment of the stomach to hydrolyze peptide bonds. As a result, pepsin affects which macromolecule?
A. carbohydrate B. protein C. DNA D. lipid
Which of the following is the major source of the pathogens that cause nosocomial infections?
A) Escherichia coli B) Enterococcus spp. C) Staphylococcus aureus D) Streptococcus pyogenes
DNA is favored as the storage molecule of genetic information because it ____ than RNA
a. has more nucleotides b. has greater chemical stability c. can assemble into longer coding sequences d. has more nucleotides and greater chemical stability e. has greater chemical stability and can assemble into longer coding sequences
Transposable elements have been found only in bacteria and do not appear to play a major role in eukaryotes.
Answer the following statement true (T) or false (F)