AP Bio - Viral Genome

Which viral cycle takes the longest to show symptoms?

• Lysogenic

• Lytic

What is the first step to both cycles?

• The virus attaches to a host

• the virus injects genetic material

• the host gets sick

• the cell is destroyed

When the viral DNA becomes active in the lysogenic cycle, which life cycle does it enter?

• lytic

• lysogenic

• cell cycle

• DNA replication

What is shown here?

• Lysogenic Cycle
• Lytic Cycle
• Binary Fission
• Conjugation

What process is this?

• phagocytosis
• lytic cycle
• lysogenic cycle
• formation of antibodies

What happens in the lysogenic cycle? 

• Virus goes in and leaves the host cell
• Virus quickly kills the host cell
• Virus inject the nucleic acid into the host cell, and the nucleic acid integrates into the host cell DNA, and stay dormant for a long time
• Bacteria injects DNA into a host cell

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

• phospholipids

• polysaccharides

• nucleic acids

• polypeptides

Why aren't viruses considered living things?

• They aren't made of cells

• They don't have DNA or RNA

• They make us sick

• They are made of protein

Answer explanation

VIruses are made of a protein capsule containing DNA or RNA.

All living things are made of cells.

What do bacteriophages infect?

• Plants

• Bacteria

• Animals

• Humans

Answer explanation

VIruses are specialized for which cells they infect. The bacteriophages can only infect bacteria, so they can't make us sick!

Reasons that viruses are considered to be nonliving is because

• They are not cellular

• They cannot reproduce on their own

• They cannot make energy

• all of the above