Which of the following describes the process of glycolysis?
a) It requires ATP and NADH.
b) It represents the first stage in the chemical oxidation of glucose by a cell.
c) Glycolysis produces 30 ATP from each molecule of glucose.
d) Glycolysis occurs in the mitochondria.
e) It converts one glucose molecule to two molecules of pyruvate and carbon dioxide
Answer: b) It represents the first stage in the chemical oxidation of glucose by a cell.
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The fluid mosaic model proposed by Singer and Nicolson in 1972 explained that
A. the cell membrane was composed of lipids and proteins. B. the cell membrane was composed of a phospholipid bilayer between two layers of globular proteins. C. the cell membrane was composed of a phospholipid bilayer with globular proteins actually inserted into the bilayer. D. the cell membrane was composed of a phospholipid bilayer but the polar ends of the phospholipid molecules were reversed.
The independent assortment of allele pairs is due to
A. the independent segregation of homologous chromosome pairs during anaphase II. B. the random combination of gametes during fertilization. C. the independent segregation of sister chromatid pairs during anaphase I. D. the independent segregation of non-sister chromatid pairs during anaphase II. E. the independent segregation of homologous chromosome pairs during anaphase I.
Long, slender, helically curved, gram-negative bacilli with hooked ends are identified as belonging to which species?
a. Treponema b. Leptospira c. Borrelia d. Coxiella
Prostaglandins are local regulators whose chemical structure is derived from _____
A) oligosaccharides B) fatty acids C) steroids D) amino acids