Gene expression refers to the multi-stepped process by which information encoded in a gene is used to direct the synthesis of a protein molecule.
a. True
b. False
Indicate whether the statement is true or false
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Question 2) Identify the true statement(s).
a. Kinesin always moves toward a centriole.
b. Dynein always moves toward the plasma membrane.
c. Dynein is responsible for movement of microvilli.
d. Myosin motors move along actin proteins.
e. Myosin motors move along actin proteins and Dynein always moves toward the plasma membrane.
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Question 3) The nucleus houses the cell's genetic material, ribonucleic acid (RNA).
a. True
b. False
Indicate whether the statement is true or false
(
Question 4) Glycolysis
a. yields two molecules of ATP for each molecule of glucose processed
b. yields two molecules of NADH when converting one glucose into two pyruvates
c. does not take place in the mitochondrion
d. all of these
e. yields two molecules of ATP for each molecule of glucose processed, and yields two molecules of NADH when converting one glucose into two pyruvates
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Question 5) The nucleus is typically the largest single organized cell component.
a. True
b. False
Indicate whether the statement is true or false
(
Question 6) Which of the following organelles contains catalase?
a. peroxisomes
b. mitochondria
c. lysosomes
d. vaults
e. a, b, and c
(
Question 7) The functional activities of each cell depend on the ability to divide.
a. True
b. False
Indicate whether the statement is true or false
(
Question 8) Microtubules
a. serve as a mechanical stiffener for microvilli
b. form neurofilaments, which degrade in Lou Gehrig's disease
c. form non-muscle contractile assemblies
d. play an important structural role in parts of the cell subject to mechanical stress
e. is responsible for nuclear division but not cytoplasmic division
(
Question 9) All new cells and new life arise only from preexisting cells.
a. True
b. False
Indicate whether the statement is true or false
(
Question 10) The bending movements of cilia and flagella
a. are associated with microtubules and kinesin
b. involve the alternate assembly and disassembly of actin filaments
c. are produced when dynein motors pull adjacent microtubule doublets past each other
d. involves dynein action on microfilaments
e. involves myosin action on intermediate filaments
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