Which statement is true?
A) The plasma membrane is positively charged on the cytoplasmic side
B) The plasma membrane is positively charged on the extracellular side
C) The inner mitochondrial membrane is positively charged on the mitochondrial
matrix side
D) The outer mitochondrial membrane is positively charged on the intermembrane
side
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B) The plasma membrane is positively charged on the extracellular side
The plasma membrane has many functions that require specialized membrane
proteins. What function of the plasma membrane can still occur if the bilayer has no
proteins?
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, barrier against the external environment
The formation of lamellipodia does not involve:
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Ran proteins
Which statement is true?
A) Lamins reinforce the nuclear envelope
B) Lamins remain assembled during cell division
C) Lamins have to be phosphorylated for their assembly in the cytosol
D) Lamins have to be phosphorylated for their assembly in the nucleus
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A) Lamins reinforce the nuclear envelope
Paracrine signaling is:
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where one cell produces a signal to induce a change in another cell
Which statement is true?
A) The signal recognition particle brings the ribosome/translating
,protein complex to the mitochondria for protein import
B) The signal recognition particle binds to the signal sequence of a protein being
translated by a ribosome
C) The signal recognition
particle is an endoplasmic reticulum integral membrane protein
D) Two of the above
E) All of the above
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B) The signal recognition particle binds to the signal sequence of a protein
being translated by a ribosome
_____________ is to actin depolymerization, as ______________ is to
microtubule depolymerization.
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ATP hydrolysis........GTP hydrolysis
A white blood cell has acquired a mutation in its Ran protein, causing the protein to
lose all its
functions. Which of the following is least likely to happen as a result of this mutation?
A) The cells existing GTP is less likely to get hydrolyzed
B) The cells existing GTP is more likely to get hydrolyzed
C) The cells import of nuclear proteins is impaired
D) Interactions between prospective nuclear proteins and the nuclear import
receptors are inhibited
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, B) The cells existing GTP is more likely to get hydrolyzed
Chromatin structure can interfere with transcription. How does the cell bypass the
constraints placed by the chromatin structure on the successful transcription of a
gene?
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Through the recruitment of histone acetyltransferases
Protein A has the following sorting signal: methionine-leucine-alanine-valine-
tryptophan-phenylalanine-
leucine-glycine-alanine-
valinemethionine-isoleucine-
leucine-alanine. Protein B has the following sorting signal: lysine-lysine-lysine-
arginine-lysine. Which statement is most likely true?
A) Protein A is trafficked to the nucleus
B) Protein B is trafficked to the endoplasmic reticulum
C) Protein B is trafficked to the mitochondria
D) Protein A is trafficked to the endoplasmic reticulum
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D) Protein A is trafficked to the endoplasmic reticulum
Autocrine signaling is:
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A) The plasma membrane is positively charged on the cytoplasmic side
B) The plasma membrane is positively charged on the extracellular side
C) The inner mitochondrial membrane is positively charged on the mitochondrial
matrix side
D) The outer mitochondrial membrane is positively charged on the intermembrane
side
Give this one a try later!
B) The plasma membrane is positively charged on the extracellular side
The plasma membrane has many functions that require specialized membrane
proteins. What function of the plasma membrane can still occur if the bilayer has no
proteins?
Give this one a try later!
, barrier against the external environment
The formation of lamellipodia does not involve:
Give this one a try later!
Ran proteins
Which statement is true?
A) Lamins reinforce the nuclear envelope
B) Lamins remain assembled during cell division
C) Lamins have to be phosphorylated for their assembly in the cytosol
D) Lamins have to be phosphorylated for their assembly in the nucleus
Give this one a try later!
A) Lamins reinforce the nuclear envelope
Paracrine signaling is:
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where one cell produces a signal to induce a change in another cell
Which statement is true?
A) The signal recognition particle brings the ribosome/translating
,protein complex to the mitochondria for protein import
B) The signal recognition particle binds to the signal sequence of a protein being
translated by a ribosome
C) The signal recognition
particle is an endoplasmic reticulum integral membrane protein
D) Two of the above
E) All of the above
Give this one a try later!
B) The signal recognition particle binds to the signal sequence of a protein
being translated by a ribosome
_____________ is to actin depolymerization, as ______________ is to
microtubule depolymerization.
Give this one a try later!
ATP hydrolysis........GTP hydrolysis
A white blood cell has acquired a mutation in its Ran protein, causing the protein to
lose all its
functions. Which of the following is least likely to happen as a result of this mutation?
A) The cells existing GTP is less likely to get hydrolyzed
B) The cells existing GTP is more likely to get hydrolyzed
C) The cells import of nuclear proteins is impaired
D) Interactions between prospective nuclear proteins and the nuclear import
receptors are inhibited
Give this one a try later!
, B) The cells existing GTP is more likely to get hydrolyzed
Chromatin structure can interfere with transcription. How does the cell bypass the
constraints placed by the chromatin structure on the successful transcription of a
gene?
Give this one a try later!
Through the recruitment of histone acetyltransferases
Protein A has the following sorting signal: methionine-leucine-alanine-valine-
tryptophan-phenylalanine-
leucine-glycine-alanine-
valinemethionine-isoleucine-
leucine-alanine. Protein B has the following sorting signal: lysine-lysine-lysine-
arginine-lysine. Which statement is most likely true?
A) Protein A is trafficked to the nucleus
B) Protein B is trafficked to the endoplasmic reticulum
C) Protein B is trafficked to the mitochondria
D) Protein A is trafficked to the endoplasmic reticulum
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D) Protein A is trafficked to the endoplasmic reticulum
Autocrine signaling is:
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