Viruses MDCAT

Front

The word virus means ______ in Latin.

Back

Poison

Answer explanation

The word virus means 'Poison' in Latin, making this the correct choice.

Front

Viruses are made of ______

Back

Nucleic acids + Protein coat

Answer explanation

Viruses are made of Nucleic acids + Protein coat. This combination allows viruses to infect host cells and replicate.

Front

Do some viruses have a lipid membrane that surrounds the capsid?

Back

True

Answer explanation

The statement is true because some viruses do have a lipid membrane surrounding the capsid, which helps protect the genetic material inside.

Front

Do all viruses have the same shape and size?

Back

False

Answer explanation

All viruses do not have the same shape and size, as they can vary greatly depending on the type of virus. Therefore, the statement is false.

Front

________ are macromolecules that carry genetic information.

Back

Nucleic acids

Answer explanation

Nucleic acids are macromolecules that carry genetic information, making them the correct choice out of the options provided.

Front

Lipids are organic compounds that are insoluble in water, such as

Back

fats

Answer explanation

Lipids are organic compounds insoluble in water, like fats. Sugars and RNA are not lipids.

Front

Capsid is _______ .

Back

protein coat surrounding a virus

Answer explanation

Capsid refers to the protein coat surrounding a virus, which protects the genetic material of the virus.

Front

Bacteriophage is a kind of virus that infects _____

Back

Bacteria

Answer explanation

Bacteriophage is a kind of virus that infects bacteria, not plants or animals. Therefore, the correct answer is Bacteria.

Front

Lytic infection and Lysogenic infection are two processes used by viruses to:

Back

replicate inside a living cell

Answer explanation

Lytic and Lysogenic infections are processes used by viruses to replicate inside a living cell, not in the air or liquids.

Front

The viral nucleic acid is inserted into the host cell’s DNA is called _____

Back

Prophage

Answer explanation

The correct term for the viral nucleic acid inserted into the host cell's DNA is Prophage.