Homework Answers
1. Methamphetamine alters dopamine neurotransmission by
- damaging to the dopaminergic and serotonergic systems, marked by decreases in the dopamine (DA) and serotonin.
- blocking the dopamine transporter from pumping dopamine back into the transmitting neuron.
2. Methamphetamine causes an increase of N+ Cl- in certain areas of the brain.
Thus all the options are correct
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Methamphetamine can affect GABA receptors: A. Increases Cl- influx in chronic users B. Increases Cl- after...
What percentage of people that initially try cocaine become abusers/addicts? a. 5-10% b. 10-15% c. 15-20%...
What percentage of people that initially try cocaine become abusers/addicts? a. 5-10% b. 10-15% c. 15-20% d. 20-25% e. 25-30% High doses of methamphetamine or MDMA are associated with: a. Dysphoria b. Antipsychotic effects c. Neuronal protection d. Neurotoxicity e. All of the above Which of the following drugs does NOT have a chemical structure similar to the indoleamine neurotransmitter serotonin (5-HT)? a. LSD b. DMT c. Mescaline d. Psilocybin e. None of the above Which of the following neurotransmitter...
Which is true? a. Acuity decreases with more receptors and smaller receptive fields b. Acuity increases...
Which is true? a. Acuity decreases with more receptors and smaller receptive fields b. Acuity increases with more receptors and smaller receptive fields c. Acuity increases with more receptors d. Acuity increases with smaller receptive fields e. None of the above
QUESTION 9 Long-term use of stimulants can lead to A. an increase in body weight B....
QUESTION 9 Long-term use of stimulants can lead to A. an increase in body weight B. stimulant psychosis C. sensitization to the euphoric effects D. all of the above QUESTION 10 the presynaptic terminal Amphetamine produces its effects mainly by _ A. blocking the reuptake: dopamine into B. decreasing the release: serotonin from Cincreasing the release: GABA from Dincreasing the release: dopamine from QUESTION 11 Nicotine produces its effects by A stimulating muscarinic acetylcholine receptors B. blocking acetylcholine receptors C....
INFORMATION ABOUT IMAGE G FOR QUESTIONS 12-15: GABAB receptors (GABABRs) are G-protein-coupled receptors that can be...
INFORMATION ABOUT IMAGE G FOR QUESTIONS 12-15:
GABAB receptors (GABABRs) are
G-protein-coupled receptors that can be found on both pre- and
postsynaptic neurons. When they are activated by GABA, they can
have a range of effects. For the synapse you are studying in the
following questions, the effects of GABABRs are
indicated in IMAGE G.
You are doing a series of experiments in which you are recording
from the pre- and postsynaptic cell at a synapse. The experiments
described below...
The binding of either glucagon or epinephrine (adrenaline) to their respective receptors on liver cells increases...
The binding of either glucagon or epinephrine (adrenaline) to their respective receptors on liver cells increases intracellular [cAMP]. How can these completely unrelated hormones that bind to distinct GPCRs do this? A. Both the glucagon and β-adrenergic receptors activate Gαo. B. Both the glucagon and β-adrenergic receptors activate Gαi. C. Both the glucagon and β-adrenergic receptors activate Gαs. D. The glucagon receptor activates Gαs and the β-adrenergic receptor activates Gαo. E. The glucagon receptor activates Gαo and the β-adrenergic receptor...
1. β1- and β2-adrenoceptors _______ while α2-receptors _______. a. Stimulate adenylyl cyclase and cAMP; enhance Ca2+...
1. β1- and β2-adrenoceptors _______ while α2-receptors _______. a. Stimulate adenylyl cyclase and cAMP; enhance Ca2+ levels b. Inhibit adenylyl cyclase and cAMP; stimulate adenylyl cyclase and cAMP c. Stimulate adenylyl cyclase and cAMP; inhibit adenylyl cyclase and cAMP d. Increase K+ channel opening; inhibit adenylyl cyclase and cAMP e. Decrease K+ channel opening; stimulate adenylyl cyclase and cAMP 2. Which of the following can cause dopamine release from the presynaptic terminal? a. Amphetamines b. MDMA c. Cocaine d. Both...
49) Olfactory Receptors a) Can be classified based on specific smell b) Cannot be classified based...
49) Olfactory Receptors a) Can be classified based on specific smell b) Cannot be classified based on smells c) Belong to less than 100 different categories d) None of the above 50) Photoreceptors a) Are the only type of sensory receptor in the eye b) Sense and encode light patterns c) Respond only to bright light d) Respond only to dim light 51) Cones specifically respond to three colors of light, these colors are: a) Red, yellow and green b)...
tiO, each day it expels l 0omposed of fur, bones, and sometimes cartilage. By examining owl pellets, ecologists would be able to determine a. the carnivores that affect owls population b. organis...
tiO, each day it expels l 0omposed of fur, bones, and sometimes cartilage. By examining owl pellets, ecologists would be able to determine a. the carnivores that affect owls population b. organisms that feed on owls c. autotrophs that owls prefer d. consumers that owls prefer e. both a and e From an environmental perspective,the dominant species in a community is A) characterized by very large individuals with long lives B) the best competitor in the community C) the best...
22. Steroids bind receptors that are a. Located in the cytoplasm b. G protein-coupled c. Integral...
22. Steroids bind receptors that are a. Located in the cytoplasm b. G protein-coupled c. Integral membrane proteins d. Peripheral membrane proteins 23. Which of the following is the sequence of events in cortisol signaling? a. Gene expression, release of the inhibitor from the receptor, binding of ligand, exposure of DNA binding site, change in conformation of receptor b. Binding of ligand, exposure of DNA binding site, change in conformation of receptor, release of inhibitor from receptor, gene expression c....
Which of the following is not true regarding translation exposure? a. Since earnings can affect stock...
Which of the following is not true regarding translation exposure? a. Since earnings can affect stock prices, many MNCs are concerned about translation exposure b. Since translation of financial statements does not affect an MNC's cash flows, some analysts suggest that translation exposure is not relevant. c. Translation exposure will not affect cash flows, even if earnings are remitted to the parent. d. All of these choices are true.
QUESTION 9 Long-term use of stimulants can lead to A. an increase in body weight B. stimulant psychosis C. sensitization to the euphoric effects D. all of the above QUESTION 10 the presynaptic terminal Amphetamine produces its effects mainly by _ A. blocking the reuptake: dopamine into B. decreasing the release: serotonin from Cincreasing the release: GABA from Dincreasing the release: dopamine from QUESTION 11 Nicotine produces its effects by A stimulating muscarinic acetylcholine receptors B. blocking acetylcholine receptors C....
INFORMATION ABOUT IMAGE G FOR QUESTIONS 12-15:
GABAB receptors (GABABRs) are
G-protein-coupled receptors that can be found on both pre- and
postsynaptic neurons. When they are activated by GABA, they can
have a range of effects. For the synapse you are studying in the
following questions, the effects of GABABRs are
indicated in IMAGE G.
You are doing a series of experiments in which you are recording
from the pre- and postsynaptic cell at a synapse. The experiments
described below...
49) Olfactory Receptors a) Can be classified based on specific smell b) Cannot be classified based on smells c) Belong to less than 100 different categories d) None of the above 50) Photoreceptors a) Are the only type of sensory receptor in the eye b) Sense and encode light patterns c) Respond only to bright light d) Respond only to dim light 51) Cones specifically respond to three colors of light, these colors are: a) Red, yellow and green b)...
tiO, each day it expels l 0omposed of fur, bones, and sometimes cartilage. By examining owl pellets, ecologists would be able to determine a. the carnivores that affect owls population b. organisms that feed on owls c. autotrophs that owls prefer d. consumers that owls prefer e. both a and e From an environmental perspective,the dominant species in a community is A) characterized by very large individuals with long lives B) the best competitor in the community C) the best...
22. Steroids bind receptors that are a. Located in the cytoplasm b. G protein-coupled c. Integral membrane proteins d. Peripheral membrane proteins 23. Which of the following is the sequence of events in cortisol signaling? a. Gene expression, release of the inhibitor from the receptor, binding of ligand, exposure of DNA binding site, change in conformation of receptor b. Binding of ligand, exposure of DNA binding site, change in conformation of receptor, release of inhibitor from receptor, gene expression c....
Which of the following is not true regarding translation exposure? a. Since earnings can affect stock prices, many MNCs are concerned about translation exposure b. Since translation of financial statements does not affect an MNC's cash flows, some analysts suggest that translation exposure is not relevant. c. Translation exposure will not affect cash flows, even if earnings are remitted to the parent. d. All of these choices are true.
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