Machine Translated by Google
Amar Telidji-Laghouat University Academic Year 2022/2023
era
Faculty of Medicine 1 Year of Medicine
EMD of January 9, 2023 (S1)
Module: cytology and cellular physiology Duration
of the exam: 1h30.
CORRECTION TYPE
Part 1 (0.5 x 10 = 5 points)
Answer true (T) or false (F) (correct if the statement is false) V/F
Staphylococcus bacteria always have a spherical shape V
1
…………………………………………………………………………………………………………………..
Prokaryotes are smaller than single-celled eukaryotes but larger than akaryotes V
2
…………………………………………………………………………………………………………………
Archaea are more resistant than eubacteria, they can be pathogenic in some cases F
3
Archaea are more resistant than eubacteria; they are never pathogenic
Strictly aerobic bacteria can only live in the presence of oxygen; they never have mesosomes F
4
Strictly aerobic bacteria can only live in the presence of oxygen; they always have mesosomes that play a role
in respiration
Sterilization at 100°C can kill bacterial spores F
5
Sterilization at 120°C for 20 minutes can kill bacterial spores
A virion is an intracellular viral particle that has no vital activity F
6
A virion is an extracellular viral particle that has no vital activity
The antigenic role of all viruses is played by the nucleocapsid F
7 The antigenic role of naked viruses is played by the capsid, while that of enveloped viruses is played by
the spikes carried on the envelope.
Bacteriophages are naked viruses that can kill bacteria by cell bursting in the lytic cycle V
8
…………………………………………………………………………………………………………………………
Tritiated thymine is detected in the nucleus by immunofluorescence F
9
Tritiated thymine is detected in the nucleus by autoradiography
Cilia are motile cytoplasmic expansions made of microtubules V
10
……………………………………………………………………………………………………………………….
Part 2: (0.5X10 = 5 points): Check the correct answer (QCS)
1. Binding fission (only one is correct): A. Is a
mode of sexual reproduction B. Is observed in
archaebacteria X
C. Is synonymous with
mitosis D. Daughter cells have half the genetic information contained in the parent cell E. Can be seen in
bacteriophages
2. The bacterial cell wall (only one is correct) :
A. Is thinner in Gram+ bacteria B. Contains
peptidoglycan only in Gram+ bacteria C. Gives all bacteria a
unique and identical shape D. Always contains teichoic acid E. Is
always permeable to gentian violet X
1 /4
Amar Telidji-Laghouat University Academic Year 2022/2023
era
Faculty of Medicine 1 Year of Medicine
EMD of January 9, 2023 (S1)
Module: cytology and cellular physiology Duration
of the exam: 1h30.
CORRECTION TYPE
Part 1 (0.5 x 10 = 5 points)
Answer true (T) or false (F) (correct if the statement is false) V/F
Staphylococcus bacteria always have a spherical shape V
1
…………………………………………………………………………………………………………………..
Prokaryotes are smaller than single-celled eukaryotes but larger than akaryotes V
2
…………………………………………………………………………………………………………………
Archaea are more resistant than eubacteria, they can be pathogenic in some cases F
3
Archaea are more resistant than eubacteria; they are never pathogenic
Strictly aerobic bacteria can only live in the presence of oxygen; they never have mesosomes F
4
Strictly aerobic bacteria can only live in the presence of oxygen; they always have mesosomes that play a role
in respiration
Sterilization at 100°C can kill bacterial spores F
5
Sterilization at 120°C for 20 minutes can kill bacterial spores
A virion is an intracellular viral particle that has no vital activity F
6
A virion is an extracellular viral particle that has no vital activity
The antigenic role of all viruses is played by the nucleocapsid F
7 The antigenic role of naked viruses is played by the capsid, while that of enveloped viruses is played by
the spikes carried on the envelope.
Bacteriophages are naked viruses that can kill bacteria by cell bursting in the lytic cycle V
8
…………………………………………………………………………………………………………………………
Tritiated thymine is detected in the nucleus by immunofluorescence F
9
Tritiated thymine is detected in the nucleus by autoradiography
Cilia are motile cytoplasmic expansions made of microtubules V
10
……………………………………………………………………………………………………………………….
Part 2: (0.5X10 = 5 points): Check the correct answer (QCS)
1. Binding fission (only one is correct): A. Is a
mode of sexual reproduction B. Is observed in
archaebacteria X
C. Is synonymous with
mitosis D. Daughter cells have half the genetic information contained in the parent cell E. Can be seen in
bacteriophages
2. The bacterial cell wall (only one is correct) :
A. Is thinner in Gram+ bacteria B. Contains
peptidoglycan only in Gram+ bacteria C. Gives all bacteria a
unique and identical shape D. Always contains teichoic acid E. Is
always permeable to gentian violet X
1 /4
