MCB2289 Introduction to Microbiology
Module 05 Quiz
Question 1 Transmissible spongiform encephalopathies are caused by
Answers:
Flavoviruses
Virusoids
Prions
Orthomyxoviruses
Question 2 All of the following viruses can cause the common cold except
Answers:
Coronaviruses
Adenovirus
Herpesviruses
Rhinoviruses
Question 3 Viruses that infect bacteria are called _______.
Answers:
E. coli
lytic viruses
naked viruses
Bacteriophages
Question 4 Rod-shaped bacteria, some of which are endospore forming, are referred to as
Answers:
Cocci
Bacilli
Spirals
Vibrios
Question 5 Beadlike chains of cocci formed after cell division along a single axis are called
Answers:
Diplococci
Streptococci
Tetrads
staphlococci
Question 6 Microorganisms that show optimal growth in moderate temperatures (between 20° C and 45° C) are called
Answers:
Thermophiles
Psychrophiles
Mesophiles
Psychrotrophs
Question 7 Toxoplasma gondii belongs to which group of eukaryotic organisms?
Answers:
Algae
Fungi
Protozoans
Helminths
Question 8 Legionella, Thiobacillus and Burkholderia are examples of
Answers:
Facultative anaerobic gram-negative rods
Gram-negative aerobic rods
Spirochetes
Anaerobic gram-negative cocci
Question 9 Organisms that require or are tolerant of salt concentrations in their environment are called:
Answers:
psychrophiles
aerobes
halophiles
heterotrophs
Question 10 Damage that can occur to the host cell as a result of viral infection include:
Answers:
lysis
altered cell shape
detachment from tissue surface
all answers are
Question 11 The so-called “red tide” is generally caused by which of the following organisms?
Answers:
Lichens
Bacteria
Diatoms
Algae
Question 12 Staphylococci and streptococci are best classified in the group of
Answers:
Gram-positive cocci
Gram-negative cocci
Gram-negative aerobic rods and cocci
Anaerobic gram-negative cocci
Question 13 Fungi and some protozoa produce a compound called _____ which strengthens the cell membranes
Answers:
cholesterol
ergosterol
hopanoids
estrogen
Question 14 The subgroup of fungi that are used as food(edible mushrooms, morels, and truffles) are called
Answers:
Basidiomycota
Ascomycota
Lichens
Zygomycota
Question 15 The sequence of stages in the multiplication of animal viruses is
Answers:
attachment, penetration, uncoating, biosynthesis, assembly, release
penetration, attachment, assembly, uncoating, biosynthesis, release
attachment, uncoating, penetration, biosynthesis, assembly, release
penetration, uncoating, adsorption, biosynthesis, assembly, release
Question 16 The causative agent for Lyme disease is a
Answers:
Spirillium
Spirochete
Vibrio
Diplococcus
Question 17 The viruses that cause chickenpox, shingles, and mononucleosis belong to which family of DNA viruses?
Answers:
Herpesviridae
Papovaviridae
Adenoviridae
Poxviridae
Question 18 Fungi are free-living _________ organisms.
Answers:
Autotrophic
Chemotrophic
Heterotrophic
Phototrophic
Question 19 The stage of the growth curve where the bacteria are producing molecules necessary for cell division, but not undergoing cell division is called the ___________
Answers:
death phase
logarithmic phase
stationary phase
lag phase
Question 20 Viruses can infect
Answers:
Plants
Bacteria
Animals
All organisms
Question 21 Bacteria that use organic compounds as the source of both carbon and energy are referred to as
Answers:
Photoautotrophs
Chemoautotrophs
Photoheterotrophs
Chemoheterotrophs
Question 22 Parasitic organisms that spend most of their time in a mammalian host are called ________
Answers:
protozoans
fungi
helminths
algae
Question 23 Bacteria that use oxygen, but only at a low concentration, are classified as
Answers:
Obligate aerobes
Microaerophiles
Obligate anaerobes
Aerotolerant anaerobes
Question 24Bacterial replication is accomplished primarily by
Answers:
Mitosis
Meiosis
Cytokinesis
Binary fission
Question 25 The antibiotics penicillin and cephalosporin are produced by
Answers:
Algae
Slime molds
Fungi
Protozoans