Explore topic-wise MCQs in Microbiology.

Which of the following disinfectant is effective against viruses?

Viruses largely lack metabolic machinery of their own to generate energy or to synthesize

Viruses require __________ for growth.

Reverse transcriptase is a useful enzyme to have when

The sequence of nucleic acid in a variety of viruses and viral host, will find more similarities

Which of the following is continuous cell line?

The size of viruses is usually measured in

The temperate phage that have no site specificity for insertion and may even be able to insert multiple copies of their DNA into a single bacterial chromosome is

The lysogenic state is governed by the activity of the regulatory region of the lambda phage genomes; this region is termed as

Enzyme neuraminidase is carried by which of the following viruses?

Lysozyme (an endolysin) which will lyse the bacterial cell, releasing the mature virions is present in

The viruses in an attenuated vaccine

The capsomeres consist of a number of proteins subunits or molecules called

In order for a virus to replicate

Which of the following viruses belong to family Flaviviridae?

Which of the following viruses show/s transformation of infected cells?

Edward Jenner began inoculating humans with material from __________ lesions.

Enveloped viruses have a __________ shape.

The envelope of which of the following viruses is derived from the host cell nucleus?

Which of the following is semi-continuous (diploid) cell line?

Which of the following viruses has not been associated with human cancer?

The viral nucleocapsid is the combination of

Which of the following may affect proteins and nucleic acids, but not viruses?

The viral DNA of the temperate phage, instead of taking over the functions of the cell's genes, is incorporated into the host DNA and becomes a prophage in the bacterial chromosome, acting as a gene. This happens in

Which of the following statements is not true of viruses?

Which of the following viruses belong/s to family caliciviridae?

Plant viruses may be cultivated in

The oncogene theory refers to

In cell culture, measles virus may lead to

A change from lysogeny to lysis is generally induced by

The repressor protein, since the cell is resistant to lysis from externally infecting phage, is also called

Which of the following virus is susceptible to chloroform?

Group E phages have

The temperate phage possesses a gene that codes for a repressor protein which makes the cell resistant to lysis initiated by

The bacterial viruses having head made up of large capsomeres, but no tail is morphologically classified as

The viral DNA is removed from the host's chromosomes and the lytic cycle occurs. The process is called

In the simplest capsid, there is a capsomere at each of the 12 vertices; this capsomere, which is surrounded by five other capsomeres, is termed a

When a virus enters a cell but does not replicate immediately, the situation is called

Which of the following are obligate intracellular parasites?

Viruses can be purified based on their size and density by using

The extracellular phage number increases until a constant titer at the end of the multiplication cycle. This time interval is termed as

Which of the following virus is enveloped?

Which of the following viruses can rescue adenovirus in simian cells?

Which of the following bacteriophage is said to have banal symmetry?

The yield of phage per bacterium is called the

The function of a viral capsid is

Which of the following viruses belong to family Hepadnaviridae?

Which of the following viruses are relatively thermostable?

The time from infection until lysis is called as

The most popular indirect method of counting virus particles is by