The sodium-potassium pump is called an electrogenic pump because it:
a. exports one net positive (+) charge out of the cell
b. pumps equal quantities of Na+ and K+ across the membrane
c. pumps hydrogen ions out of the cell
d. ionizes sodium and potassium ions
e. is used to drive the transport of other molecules against a concentration gradient
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, a. exports one net positive (+) charge out of the cell
A logical consequence of the second law of thermodynamics could be stated,
__________.
a. every energy transfer requires activation energy from the environment
b. energy can be transferred or transformed, but it cannot be created or destroyed
c. if the entropy of a system increases, there must be a corresponding decrease in the
entropy of the universe
d. every chemical reaction must increase the total entropy of the universe
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d. every chemical reaction must increase the total entropy of the universe
The movement of sucrose into the cell, against it's concentration gradient, while
moving Ca+ out of the cell, down its concentration gradient, reflects the action of:
a. an antiporter using primary active transport
b. a symporter using secondary active transport
c. an antiporter using secondary active transport
d. a symporter using facilitated diffusion
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c. an antiporter using secondary active transport
Cyanide binds and impairs one of the molecules involved in the oxidative
phosphorylation of ATP. The target organelle for cyanide must be:
a. peroxisomes
b. lysosomes
,c. ribosomes
d. the endoplasmic reticulum
e. mitochondria
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e. mitochondria
During which case of the cell cycle are proteins made that are necessary for mitosis?
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G2
Where is ATP synthase located in the mitochondrion?
a. cytosol
b. part of Complex I
c. outer membrane
d. inner membrane
e. part of the citric acid cycle
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d. inner membrane
What is the kinetochore?
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, a protein complex that attaches to the centromere
The likely outcome from a mutation in the lacO site (lac Operator) of the lac operon
would be:
a. the order in which the genes of the lac operon are transcribed could be altered.
b. binding of the activator protein could be hindered
c. binding of a repressor protein could be hindered
d. binding of RNA polymerase could be hindered
e. duplication could be affected
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c. binding of a repressor protein could be hindered
Bacteria that produce nitrite (NO2-) during anaerobic respiration would use________ as
their final electron acceptor.
a. O2
b. N2O
c. N2
d. NO3-
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d. NO3-
Which of the following is NOT required for the initiation of translation?
a. small subunit of the ribosome
b. mRNA
c. initiator tRNA
a. exports one net positive (+) charge out of the cell
b. pumps equal quantities of Na+ and K+ across the membrane
c. pumps hydrogen ions out of the cell
d. ionizes sodium and potassium ions
e. is used to drive the transport of other molecules against a concentration gradient
Give this one a try later!
, a. exports one net positive (+) charge out of the cell
A logical consequence of the second law of thermodynamics could be stated,
__________.
a. every energy transfer requires activation energy from the environment
b. energy can be transferred or transformed, but it cannot be created or destroyed
c. if the entropy of a system increases, there must be a corresponding decrease in the
entropy of the universe
d. every chemical reaction must increase the total entropy of the universe
Give this one a try later!
d. every chemical reaction must increase the total entropy of the universe
The movement of sucrose into the cell, against it's concentration gradient, while
moving Ca+ out of the cell, down its concentration gradient, reflects the action of:
a. an antiporter using primary active transport
b. a symporter using secondary active transport
c. an antiporter using secondary active transport
d. a symporter using facilitated diffusion
Give this one a try later!
c. an antiporter using secondary active transport
Cyanide binds and impairs one of the molecules involved in the oxidative
phosphorylation of ATP. The target organelle for cyanide must be:
a. peroxisomes
b. lysosomes
,c. ribosomes
d. the endoplasmic reticulum
e. mitochondria
Give this one a try later!
e. mitochondria
During which case of the cell cycle are proteins made that are necessary for mitosis?
Give this one a try later!
G2
Where is ATP synthase located in the mitochondrion?
a. cytosol
b. part of Complex I
c. outer membrane
d. inner membrane
e. part of the citric acid cycle
Give this one a try later!
d. inner membrane
What is the kinetochore?
Give this one a try later!
, a protein complex that attaches to the centromere
The likely outcome from a mutation in the lacO site (lac Operator) of the lac operon
would be:
a. the order in which the genes of the lac operon are transcribed could be altered.
b. binding of the activator protein could be hindered
c. binding of a repressor protein could be hindered
d. binding of RNA polymerase could be hindered
e. duplication could be affected
Give this one a try later!
c. binding of a repressor protein could be hindered
Bacteria that produce nitrite (NO2-) during anaerobic respiration would use________ as
their final electron acceptor.
a. O2
b. N2O
c. N2
d. NO3-
Give this one a try later!
d. NO3-
Which of the following is NOT required for the initiation of translation?
a. small subunit of the ribosome
b. mRNA
c. initiator tRNA
