Surface tension of water is due to
a. ionic bonding.
b. ionization of water.
c. the ability of water to act as a solvent.
d. hydrogen bonding.
e. water molecules repelling each other.
D
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Which of the following is an internal defense in the body’s innate immune system?
a. Antibodies b. B cells c. Memory response d. Natural killer cells
ATP is a
1.carbohydrate. 2.lipid. 3.protein. 4.nucleic acid. 5.nucleotide.
Which statement is false?
A. A molecule must be made of at least two atoms. B. Compounds are made of elements. C. Two atoms of oxygen make a molecule of oxygen. D. Chemical bonds form between molecules of solute and solvent. E. Elements are found in compounds and molecules.
Members of the genus Streptococcus carry out ________ fermentation.
A. heterolactic B. mixed acid C. homolactic D. butanediol