These genes encode proteins that generally regulate the cell cycle in normal cells

a. tumor suppressor genes
b. proto-oncogenes
c. oncogenes
d. tumor suppressor genes and proto-oncogenes
e. tumor suppressor genes, proto-oncogenes, and oncogenes


B

Biology & Microbiology

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A "nerve" is defined as:

a. neuron fibers bundled inside a sheath of connective tissue b. a single axon of a neuron c. the same as a neuron within the central nervous system d. a dendrite e. a fiber more than 10 inches in length

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Which is the main material of cell membranes?

a. lipids b. proteins c. phospholipids d. triglycerides e. fatty acids

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Cilia are found in certain

A) Protozoa B) Fungi C) Algae D) Bacteria E) All of the above

Biology & Microbiology

Place the following events that occur at the vertebrate neuromuscular junction in the correct order.IDepolarization of the muscle fiber membrane.IIGeneration of an action potential in the neuron.IIIStimulation of Ca2+ entry into the neuron.IVRelease of acetylcholine into the synapse.

A. IV, II,III, I B. III, II, IV, I C. I, III, IV, II D. I, II, III, IV E. II, III, IV, I

Biology & Microbiology