Chapter 4 Flashcards
__________ embedded in the cell membrane act as gates and transportation systems that allow selected substances to pass through the membrane.
PROTEINS
The “power plants” of the cell, which provide most of the energy for cell functions, are the __________.
MITOCHONDRIA
Microtubules are primarily concerned with __________.
PROTEIN TRANSPORT
The resting charge in neurons is about __________.
-70 mV relative to the ourside
Membrane pumps exchange Na+ ions for __________ ions.
K+
What is the ion form of depolarization?
Na+
What is the ion form of organic?
A-
What is the ion form of hyperpolarization?
K+
What is the ion form of sodium ion?
Ca2+
The phrase “grandmother cells” refers to __________.
a. the oldest neurons in the brain
b. the neurons responsible for identifying people
c. the neurons that are the last to break down with old age
d. the implication that people have separate neurons for detecting and representing every object
D. the implication that people have separate neurons for detecting and representing every object
The flow of information through a neuron __________.
a. starts with the dendrites and ends with the terminal button
b. starts with the axon and ends with the dendrites
c. starts with the terminal button and ends with the dendrites
d. starts with the dendrites and ends with the axon
A. starts with the dendrites and ends with the terminal button
The nucleus __________.
a. regulates the materials that enter and leave the cell domain
b. is where the cell’s protein products are assembled
c. is where the cell’s protein is stored and copied
d. is an extension of the nuclear membrane
C. is where the cell’s protein is stored and copied
The __________ carries the message across the synapse.
a. axon
b. dendrite
c. neurotransmitter
d. all of the above
C. neurotransmitter
A __________ is a segment of a DNA strand that encodes the synthesis of a particular type of protein molecule.
a. chromosome
b. gene
c. double-helix
d. ribosome
B. gene
