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