lecture 12 - human pathogens Flashcards
(20 cards)
Q: What is an endemic disease?
A) Always present in a population
B) Only affects a few people in a limited area
C) Affects many people in a large area
D) Worldwide outbreak
Answer: A) Always present in a population
Q: Fungi can cause which of the following diseases?
A) Athlete’s foot
B) Tuberculosis
C) Measles
D) Botulism
Answer: A) Athlete’s foot
Flashcard 18
Q: Which of the following is a protozoan infection?
A) Amebic dysentery
B) Ringworm
C) Botulism
D) Tuberculosis
Answer: A) Amebic dysentery
Flashcard 17
Q: Which of the following is a prion disease in humans?
A) Tuberculosis
B) Creutzfeldt-Jakob disease
C) Measles
D) Influenza
Answer: B) Creutzfeldt-Jakob disease
Flashcard 16
Q: What is antigenic shift in influenza viruses?
A) Gradual mutation of viral antigens
B) Exchange of RNA segments between different viral strains
C) Loss of viral envelope
D) Production of toxins
Answer: B) Exchange of RNA segments between different viral strains
Flashcard 15
Q: What is the correct sequence for the stages of viral infection?
A) Attachment, Penetration, Replication, Biosynthesis, Maturation, Release
B) Penetration, Attachment, Maturation, Replication, Release
C) Attachment, Replication, Maturation, Release, Biosynthesis
D) Replication, Penetration, Attachment, Release, Maturation
Answer: A) Attachment, Penetration, Replication, Biosynthesis, Maturation, Release
Flashcard 14
Q: Viruses are different from bacteria because they:
A) Have a nucleus
B) Are non-cellular and require a host to reproduce
C) Can be treated with antibiotics
D) Have a cell wall
Answer: B) Are non-cellular and require a host to reproduce
Flashcard 13
Q: Why is overuse of antibiotics a problem?
A) It increases bacterial growth
B) It puts selective pressure leading to antibiotic-resistant strains
C) It makes bacteria less harmful
D) It cures all diseases
Flashcard 13
Q: Why is overuse of antibiotics a problem?
A) It increases bacterial growth
B) It puts selective pressure leading to antibiotic-resistant strains
C) It makes bacteria less harmful
D) It cures all diseases
Answer: B) It puts selective pressure leading to antibiotic-resistant strains
Flashcard 12
Q: Which of the following is NOT an effective way to control infectious bacteria?
A) Hygiene
B) Antibiotics
C) Radiation
D) Ignoring food safety
Ignoring food safety
Flashcard 11
Q: What is the most toxic substance on earth, produced by an anaerobic bacterium in canned food?
A) Tetanus toxin
B) Botulinum toxin
C) Verotoxin
D) Erythrogenic toxin
Answer: B) Botulinum toxin
Flashcard 10
Q: Which disease is caused by Mycobacterium tuberculosis?
A) Botulism
B) Tuberculosis
C) Measles
D) Ringworm
Answer: B) Tuberculosis
Flashcard 9
Q: What is the main effect of lipopolysaccharide (LPS) release from Gram-negative bacteria?
A) Muscle relaxation
B) Fever and inflammation
C) Production of antibodies
D) Cell division
Answer: B) Fever and inflammation
Flashcard 8
Q: Which of the following allows bacteria to stick to host cells?
A) Pili
B) Flagella
C) Ribosomes
D) Nucleus
Pili
Flashcard 7
Q: Which of the following is a toxin-producing bacterium?
A) Clostridium tetani
B) Escherichia coli (certain strains)
C) Both A and B
D) Neither A nor B
Answer: C) Both A and B
Flashcard 6
Q: What are virulence factors?
A) Antibiotics
B) Traits that increase a microbe’s ability to cause disease
C) White blood cells
D) Vaccines
Answer: B) Traits that increase a microbe’s ability to cause disease
Flashcard 5
Q: Which structure is found in Gram-negative bacteria but not in Gram-positive bacteria?
A) Thick peptidoglycan layer
B) Outer membrane with lipopolysaccharides
C) Nucleus
D) Capsule
Answer: B) Outer membrane with lipopolysaccharide
Answer: B) Outer membrane with lipopolysaccharides
Flashcard 4
Q: Bacteria are classified as:
A) Prokaryotic cells
B) Eukaryotic cells
C) Viruses
D) Prions
Answer: A) Prokaryotic cells
Flashcard 3
Q: Which of the following is a common mode of disease transmission?
A) Sexual activity
B) Dust and aerosols
C) Fomites
D) All of the above
Answer: D) All of the above
Flashcard 2
Q: What term is used for microbes that cause disease?
A) Flora
B) Pathogens
C) Probiotics
D) Antigens
Answer: B) Pathogens
Flashcard 1
Q: Which of the following is NOT a microbe?
A) Bacteria
B) Fungi
C) Viruses
D) Red blood cells
Answer: D) Red blood cells
