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Amar Telidji-Laghouat University. Era 1 Faculty of Medicine June 24, 2021
year of medicine
Medium-Term Cytology and Cell Physiology Test (S2)
Duration: 1h30
CORRECTION TYPE
Part 1: (6.5 points) (0.75 points for each false statement and its correction and 0.5 points for each true statement)
Answer true (T) or false (F) (correct if the statement is false) V/F
Exocytosis is a phenomenon observed in eukaryotic and prokaryotic cells. F
1 Exocytosis is a phenomenon specific to eukaryotic cells because prokaryotes do not contain an
endomembrane system.
Lipid rafts are small, specialized, rigid, cholesterol-rich domains of the plasma membrane that are F
2 involved in the formation of clathrin-coated vesicles.
Lipid rafts are small, specialized, rigid, cholesterol-rich domains of the plasma membrane that are
involved in the formation of caveolin-coated vesicles.
Pinocytosis is the internalization of molecules contained in droplets, which will be degraded and then F
3 released outside the cell.
Pinocytosis is the internalization of molecules contained in droplets, which will be degraded and then
used by the cell.
There are 4 types of collagen fibers in the ECM; collagen IV is located in the basal lamina V
4
Laminin is a fibrous protein of the extracellular matrix F
5
Laminin is an adhesive protein of the extracellular matrix (basal lamina)
6 During endocytosis, actin filaments, microtubules and dynein V are involved.
The membrane potential is the charge imbalance that exists on either side of the plasma membrane V
7
(positive on the extracellular face and negative on the cytosolic face)
GLUT2 are glucose transporters that allow facilitated diffusion into the basal pole of intestinal and renal cells V
8
Hepatitis C virus entry into target cells occurs through caveolin-dependent receptor-mediated F
endocytosis.
9 Entry of hepatitis C virus into target cells occurs through clathrin-dependent receptor-mediated
endocytosis.
Lysosomes maintain their acidic pH (PH=5) thanks to an H+ ATPase pump which expels the F
10 H+ from the lysosomal lumen to the cytosol
Lysosomes maintain their acidic pH (PH=5) thanks to an H+ ATPase pump which expels the
H+ from the cytosol to the lysosomal lumen
1/4
Amar Telidji-Laghouat University. Era 1 Faculty of Medicine June 24, 2021
year of medicine
Medium-Term Cytology and Cell Physiology Test (S2)
Duration: 1h30
CORRECTION TYPE
Part 1: (6.5 points) (0.75 points for each false statement and its correction and 0.5 points for each true statement)
Answer true (T) or false (F) (correct if the statement is false) V/F
Exocytosis is a phenomenon observed in eukaryotic and prokaryotic cells. F
1 Exocytosis is a phenomenon specific to eukaryotic cells because prokaryotes do not contain an
endomembrane system.
Lipid rafts are small, specialized, rigid, cholesterol-rich domains of the plasma membrane that are F
2 involved in the formation of clathrin-coated vesicles.
Lipid rafts are small, specialized, rigid, cholesterol-rich domains of the plasma membrane that are
involved in the formation of caveolin-coated vesicles.
Pinocytosis is the internalization of molecules contained in droplets, which will be degraded and then F
3 released outside the cell.
Pinocytosis is the internalization of molecules contained in droplets, which will be degraded and then
used by the cell.
There are 4 types of collagen fibers in the ECM; collagen IV is located in the basal lamina V
4
Laminin is a fibrous protein of the extracellular matrix F
5
Laminin is an adhesive protein of the extracellular matrix (basal lamina)
6 During endocytosis, actin filaments, microtubules and dynein V are involved.
The membrane potential is the charge imbalance that exists on either side of the plasma membrane V
7
(positive on the extracellular face and negative on the cytosolic face)
GLUT2 are glucose transporters that allow facilitated diffusion into the basal pole of intestinal and renal cells V
8
Hepatitis C virus entry into target cells occurs through caveolin-dependent receptor-mediated F
endocytosis.
9 Entry of hepatitis C virus into target cells occurs through clathrin-dependent receptor-mediated
endocytosis.
Lysosomes maintain their acidic pH (PH=5) thanks to an H+ ATPase pump which expels the F
10 H+ from the lysosomal lumen to the cytosol
Lysosomes maintain their acidic pH (PH=5) thanks to an H+ ATPase pump which expels the
H+ from the cytosol to the lysosomal lumen
1/4
