When fatty acids are broken down to make ATP, which molecule is formed and at which step in aerobic
respiration does it enter?
a. acetyl CoA, which enters into glycolysis
b. acetyl CoA, which enters into the Krebs cycle
c. pyruvate, which enters into the Krebs cycle
d. PGAL, which enters into electron transfer phosphorylation
e. PGAL, which enters into glycolysis
ANSWER: b
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Which statement is true?
1.Both the parasympathetic and sympathetic nervous systems send nerves to all organs. 2.The sympathetic nervous system that supplies an organ will also provide parasympathetic nerves to it. 3.The sympathetic branch can have either excitatory or inhibitory effects depending on effects from the environment. 4.The sympathetic branch of the autonomic system usually speeds up the activities of the body. 5.The parasympathetic system usually speeds up the activities of the body.
The micrometer (μm) is the most convenient unit for measuring cells. Indicate whether the statement is true or false
Water, wind, and ice are agents of:
a. erosion. b. decomposition. c. mineralization. d. salinization. e. soil pH.
Light consists of discrete packets of kinetic energy called
A. photons. B. protons. C. electrons. D. lasers. E. grana.