During viral multiplication, endocytosis is followed by _____ .

• A) Acidification
• B) Uncoating
• C) Activation of immunity
• D) Membrane fusion

Virus surfaces are ____ .

• A) Amphoteric
• B) Negatively charged
• C) Positively charged
• D) Neutral

Which one of the following is related to Positive sense RNA virus?

• A) Need cellular RNA dependent RNA polymerase
• B) Genome itself acts as mRNA
• C) They first make a positive strand with RNA dependent RNA polymerase
• D) They are a copy of mRNA

Plaques in cell culture indicate the presence of _______ .

• A) Fungi
• B) Bacteriophages
• C) Mycoplasma
• D) Bacteria

In Immunofluorescence Assay, secondary antibody, carrying a fluorophore, recognizes _____and binds to it.

• A) Probe
• B) Epitope
• C) Primary antibody
• D) Fluorophore

Viral infection leads to cell death due to the _____.

• A) Immune response by host
• B) Proteins encoded by viral genome
• C) Proteins encoded by host cell genome
• D) Viral genome

Rabies virus resides in _____ .

• A) Skin tissues
• B) Nervous tissues
• C) Gastrointestinal tract
• D) Blood

The process of exposing the viral genome in the host cell is called as ______.

• A) Uncoating
• B) Fusion
• C) Viral Penetration
• D) Endocytosis

Which one of the following enzymes is responsible for transcription?

• A) DNA dependent DNA polymerases
• B) RNA dependent DNA polymerases
• C) DNA dependent RNA polymerases
• D) RNA dependent RNA polymerases

Which one of the following is true about poliovirus?

• A) Enveloped virus enters into cell
• B) Enters cell via fusion process
• C) Enveloped virus
• D) Non- enveloped virus

Parafluoroalanine prevents the conversion of _____ to _____ .

• A) DNA; RNA
• B) DNA; Proteins
• C) RNA; DNA
• D) RNA; Proteins

Which of the following practices should be utilized when working in a biological safety cabinet?

• A) Disinfect work surface before and after work
• B) Disinfect all items which go inside and out of BSC
• C) Do not store any item in BSC
• D) All of the above

First discovered, Type II restriction endonuclease was

• A) EcoR1
• B) EcoK
• C) Hind 1
• D) Hind11

Transport of infectious materials require ___________

• A) International regulations
• B) IATA shipping
• C) Packaging
• D) All given

Micro incinerators are heated by _____________ or electricity

• A) Fire
• B) All given
• C) Gas
• D) Heat

An individual can learn about the hazards of specific chemicals by?

• A) Reading the Material Safety Data Sheet
• B) Talking to friends about it
• C) Reading science magazines
• D) Asking a co-worker

Which of the following enzyme is used to cut DNA in rDNA technology?

• A) Phosphatase
• B) ribonuclease
• C) Ligase
• D) Restriction enzymes

Work with high concentrations of ___________ is the risk factor in high risk TB labs

• A) Cocci
• B) E.Coli
• C) Bacilli
• D) Spirilla

Bio safety cabinets are used not only to protect the worker but also

• A) protect the lab environment from the microorganisms
• B) enable eating and drinking in the lab
• C) absolve off the lab workers from wearing lab coats
• D) prevent the lab from overheating

Hazardous chemicals follow the ____________ route of exposure

• A) Needle sticks
• B) Ingestion
• C) Inhalation
• D) All given