PCB 3023 : Cell Biology Final Review Study Guide Solutions
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PCB
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PCB
PCB 3023 : Cell Biology Final Review
Study Guide Solutions
If PAGE is carried out after subjecting the sample to SDS and beta-mercaptoethanol, then proteins will be
separated on the basis of - ANSWER-Mass
Which is the most abundant molecule in a bacterial cell? - ANSWER-Water
Which of the foll...
Assume that the kinetics of a phosphorylation reaction carried out by a kinase can be appropriately
described by the Michaelis-Menten relationship. Competitive inhibition of this kinase by a drug molecule
will - ANSWER✔✔-Alter the slope of the line in the Lineweaver-Burk plot, but not the maximum rate of
the reaction.
Which channel needs to be in the open state during the rising phase of an action potential? -
ANSWER✔✔-Voltage-gated Na+ channels
The action potential does not reverse direction on its own because - ANSWER✔✔-The voltage-gated Na+
channels cannot transition directly from inactive to open states
Myelination of axons - ANSWER✔✔-Increases the rate of nerve conduction
Neurotransmitters that open Cl- channels in the post-synaptic cell membrane - ANSWER✔✔-Produce a
similar effect as neurotransmitters that open K+ channels in the post-synaptic cell membrane
The microvilli of specialized epithelia are structurally composed of - ANSWER✔✔-Plasma membrane
covering an actin bundle
Which of the following could be affected by a mutation in the actin protein? I. Muscle contraction II. Cell
locomotion III. Mitosis IV. Cell shape - ANSWER✔✔-I, II, III and IV
Which of the following statement is true about intermediate filaments? - ANSWER✔✔-Intermediate
filaments play a key role in the formation of cell-cell junctions.
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