Graded potentials result from the opening of ______.
Fill in the blank(s) with the appropriate word(s).
ligand-gated channels
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When does an ovum finish meiosis?
A. During fertilization B. During implantation C. While in a secondary follicle D. While in a primary follicle E. While in a tertiary follicle
The gastric phase of gastric secretion is triggered by
A) the release of cholecystokinin and secretin by the small intestine. B) the sight, thought, or smell of food. C) the entry of chyme into the small intestine. D) the entry of food into the stomach. E) the entry of chyme into the large intestine.
If the axon terminal of a motor neuron suddenly became permeable to calcium ions,
A) the neuron will fire an action potential. B) the motor end plate will be depolarized. C) the motor end plate will be hyperpolarized. D) neurotransmitter release will be blocked. E) the neuron will become unable to stimulate the muscle cell.
All of the following participate in DNA replication except ________
A) ribosomes B) DNA C) DNA ligase D) DNA polymerase E) DNA helicase