Virus Structure

Which of the following best describes the overall structure of viruses?

• An outer protein coat and nucleic acid within the core.

• An outer carbohydrate coat and nucleic acid within the core.

• A protein tail and carbohydrate tail fibers.

• A carbohydrate tail and protein tail fibers.

Viruses are shaped like

• spheres

• cubes

• a diamond shape with tail fibres

• all of these

A virus's genetic material is surrounded by

• a protein capsid

• DNA

• a tail fiber

• nothing

Viruses contain genetic material which carries the instructions for the construction of new virus particles. This genetic material is primarily composed of-

• phospholipids

• polysaccharides

• DNA or RNA

• polypeptides

The projections on the surface of this virus allow the virus to —

• move inside a host cell

•  attach to a host cell

• control a host cell’s DNA

• signal other viruses to infect a host cell

Select the structures present in a virus:

• A genome

• A protein coat

• Mitochondrion

• A lipid membrane

• Cytoplasm

What is the main function of the projections on the surface of a virus?

• They aid in respiration

• They help the virus grow

• They help the virus invade its host by attaching to specific sites on the host

• They help the virus digest food molecules

A capsid is...

• the protein surrounding a virus.

• the protein surrounding a bacteria.

• the same as a capsule.

• None of the other answers are correct.

This is used to attach itself to the host surface.

What's on the inside of the virus's protein coat?

• Tootsie Rolls

• Genetic Material

• Proteins

• Lipids