Microbial Diversity and Virology
This quiz covers the diversity of microorganisms including viruses, bacteria, protists, and fungi, as well as their characteristics and ecological roles.
Questions
Which of the following is a doughnut shaped virus?
- Calicivirus
- Cytomegalovirus
- Torovirus
- Astrovirus
- Norwalk virus
An enterotoxin is a harmful substance produced by microorganisms, which is specifically dangerous to the intestines. The first viral enterotoxin discovered is _____________________.
- NS1
- PKR
- NSP5
- NSP4
- NSP1
Oncogenesis is a process by which normal cells are transformed into cancer cells. Which among the following viruses have a hit and run mechanism of oncogenesis?
- Papillomavirus
- Herpesvirus
- Adenovirus
- Simian virus 40
- Polyomavirus
The preintegration complex is essentially the viral core released into the host cell. Which among the following proteins regulates the nuclear import of the HIV-1 pre-integration complex?
- Tat
- Vif
- Nef
- Vpr
- Rev
Protists are useful in the various manners. Which among the following is not a use of protists?
- Primary producer of aquatic ecosystem
- Source of commercial products
- Source of medicines
- Source of mineral
- Source of biological pest control
Arthrobacter is a genus of bacteria which is generally found in soil. Which among the following species of Arthrobacter produces the enzyme inulase II?
- Arthrobacter chlorophenolicus
- Arthrobacter sp strain R1
- Arthrobacter sp H65-7
- Arthrobacter luteus
- Arthrobacter crystallopoietes
A neurotoxin is a substance that is capable of causing damage to nerves or nerve tissue. It is commonly secreted by
______________.
- slime molds
- Gonyaulax
- diatoms
- brown algae
- red algae
Which among the following can be excluded from the general characteristics of the kingdom Monera?
- The gram negative bacteria has an extra layer of glycol on the outside of the cell wall.
- Sexual reproduction is also seen in kingdom monera.
- Monerans may be obligate aerobes or obligate anaerobes .
- DNA is in double stranded form.
- The gram positive bacteria's cell wall is made up of protein-sugar complex.
Which among the following fungi are found in the oral cavity of HIV-infected patients?
- Candida albicans
- Candida kefyr
- Candida glabrata
- Candida famata
- Candida dubliniensis
Which among the following does not characterises ectomycorrhiza?
- Ectomycorrhizas forms between fungi and the roots of around 5% of plant species.
- Ectomycorrhizal fungi do not penetrate their host’s cell walls.
- Many EcM fungi have fruiting bodies.
- The hyphae extending outward into the soil from one ectomycorrhiza can infect other nearby plants.
- The extramatrical mycelia of ectomycorrhizas acts as transport structures.