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Chapter 01 gh
1. Dendrites contain the nuclei, ribosomes, mitochondria, and other structures found in most cells.
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a. True
b. False
ANSWER: False g h
2. Neurons receive information and transmit it to other cells.
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a. True
b. False
ANSWER: True g h
3. Santiago Ramón y Cajal used special staining techniques to reveal that the brain is composed of individual cells.
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a. True
b. False
ANSWER: True g h
4. An efferent axon carries information away from a structure.
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a. True
b. False
ANSWER: True g h
5. The greater the surface area of a dendrite, the more information it can receive from other neurons.
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a. True
b. False
ANSWER: True g h
6. Neurons are distinguished from other cells by their shape.
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a. True
b. False
ANSWER: True g h
7. The role of glial cells is to act like “glue” or scaffolding to support the neurons.
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a. True
b. False
ANSWER: False g h
8. Glial cells transmit information across long distances.
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a. True
b. False
ANSWER: False g h
9. There are two types of glial cells that produce myelin sheath. In the central nervous system, Schwann cells
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fulfill this role and, in the periphery, oligodendrocytes produce it.
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,Chapter 01 gh
a. True
b. False
ANSWER: False g h
10. The blood-brain barrier is made up of closely packed glial cells.
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a. True
b. False
ANSWER: False g h
11. The difference in voltage in a resting neuron is called the resting potential.
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a. True
b. False
ANSWER: True g h
12. Increasing the electrical gradient for potassium will reduce the tendency for potassium ions to exit the neuron.
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a. True
b. False
ANSWER: True g h
13. At the resting potential, the potassium channels are completely closed and the sodium channels are almost closed.
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a. True
b. False
ANSWER: False g h
14. Dr. Skinner is working in the lab measuring the voltage of neurons, and during one condition, she tried to
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depolarize the neurons from -70 mV to -80 mV.
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a. True
b. False
ANSWER: False g h
15. Action potentials can be produced in the dendrites of some neurons.
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a. True
b. False
ANSWER: False g h
16. The two basic kinds of cells in the nervous system are .
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a. neurons and glia gh gh
b. dendrites and axons gh gh
c. ribosomes and lysosomes gh gh
d. neurons and axons gh gh
ANSWER: a g h
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17. Santiago Ramon y Cajal demonstrated that .
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a. at rest, the neuron has a negative charge inside its membrane
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b. neurons are separate from one another gh gh gh gh gh
c. neurons communicate at specialized junctions called synapses
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d. action potentials follow the all-or-none law
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ANSWER: b g h
18. Both and gh shared the Nobel Prize for Physiology or Medicine in 1906.
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a. Golgi and Cajal gh gh
b. Cajal and Sherrington gh gh
c. Sherrington and Golgi gh gh
d. Cajal and Kalat gh gh
ANSWER: a g h
19. Dr. Kimi studies the plasma membrane of neurons. He specifically researches the specialized that allow in
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gh important things like water, oxygen, sodium, and so on.
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a. lipid channels gh
b. protein channels gh
c. lipid receptors gh
d. protein receptors gh
ANSWER: g h b
20. Neurons differ most strongly from other body cells in their .
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a. temperature
b. shape
c. osmotic pressure gh
d. mitochondria
ANSWER: b g h
21. What do neurons have that other cells do not?
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a. A plasma membrane
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b. Large, branching extensions gh gh
c. Protein channels gh
d. An endoplasmic reticulum
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ANSWER: b g h
22. Dr. McLaughlin’s lab studies how newly formed proteins are folded inside neurons. They would be most
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gh interested in studying the .
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a. endoplasmic reticulum gh
b. mitochondria
c. ribosomes
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Name: Class: Date:
Chapter 01 gh
d. nucleus
ANSWER: c g h
23. Water, oxygen, and
gh freely flow across a cell membrane.
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a. calcium
b. positively charged ions gh gh
c. magnesium
d. carbon dioxide gh
ANSWER: d g h
24. The structure that contains a cell’s chromosomes is called the .
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a. endoplasmic reticulum gh
b. nucleus
c. mitochondrion
d. ribosome
ANSWER: b g h
25. Small, charged molecules can cross the cell membrane through .
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a. diffusion
b. ribosomes
c. mitochondria
d. protein channels gh
ANSWER: d g h
26. Professor Lopez studies the specialized
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a. motor neurons gh
b. sensory neurons gh
c. glial cells gh
d. interneurons
ANSWER: b g h
27. Ribosomes are the part of a cell that .
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a. performs metabolic activities gh gh
b. breaks down harmful chemicals
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c. transports proteins gh
d. synthesizes new proteins gh gh
ANSWER: d g h
28. The endoplasmic reticulum is a .
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a. network of thin tubes that transport newly synthesized proteins
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b. site where the cell synthesizes new protein molecules
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