Becker's World of the Cell (9th Edition)
9th Edition
ISBN: 9780321934925
Author: Jeff Hardin, Gregory Paul Bertoni
Publisher: PEARSON
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Chapter 22, Problem 22.10PS
Down and Out. Endocannabinoids are produced by postsynaptic neurons but act on receptors (CB1 receptors) in presynaptic neurons. One type of neuron that is a target of endocannabinoids is glutamatergic neurons.
(a) CB1 agonists such as THC reduce calcium influx by blocking the activity of voltage-dependent calcium channels. What effect would this have on the release of glutamate?
(b) Glutamate causes the membrane of postsynaptic neurons to become hyperpolarized. How would THC be expected to affect the rate of nerve impulse transmission in postsynaptic neurons that make synapses with the glutamatergic neuron?
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Ch.23
How is Salmonella able to cross from the intestines into the blood?
A. it is so small that it can squeeze between intestinal cells
B. it secretes a toxin that induces its uptake into intestinal epithelial cells
C. it secretes enzymes that create perforations in the intestine
D. it can get into the blood only if the bacteria are deposited directly there, that is, through a puncture
—
Which virus is associated with liver cancer?
A. hepatitis A
B. hepatitis B
C. hepatitis C
D. both hepatitis B and C
—
explain your answer thoroughly
Chapter 22 Solutions
Becker's World of the Cell (9th Edition)
Ch. 22 - Ouabain is an African plant derivative that has...Ch. 22 - You have isolated a toxin from a previously...Ch. 22 - The poison produced by some species of Central and...Ch. 22 - Drugs that affect the reuptake of...Ch. 22 - The Truth About Nerve Cells. For each of the...Ch. 22 - QUANTITATIVE The Resting Membrane Potential. The...Ch. 22 - QUANTITATIVE Patch Clamping. Patch-clamp...Ch. 22 - The Equilibrium Potential. Answer each of the...Ch. 22 - QUANTITATIVE Heart Throbs. An understanding of...Ch. 22 - The All-or-None Response of Membrane Excitation. A...
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