Unit 4 Test Review

Which of the following best describes the difference between the genetic material of viruses and bacteria?

• The genetic material of viruses is located on multiple chromosomes, while bacteria have only one.

• The genetic material of viruses always includes both DNA and RNA, while bacteria only have DNA

• Viruses have less genetic material and fewer genes than bacteria.

• The genetic material of viruses is coiled, whereas the genetic material of bacteria is linear.

AIDS, influenza, and Ebola are examples of diseases caused by microbes called–

• viruses

• parasites

• bacteria

• fungi

Bacteria are called ____________________ because their genetic material is not contained in nuclei.

• carbohydrates

• proteins

• eukaryotes

• prokaryotes

Which statement is true about viruses?

• Viruses can eat and metabolize food.

• Viruses can reproduce only using a host cell.

• Viruses can reproduce on their own at any time.

• Viruses contain DNA, so they are alive.

Why are viruses like parasites?

• They make their own food

• They use their own energy to develop

• They multiply

• They harm the cells they enter

A type of asexual reproduction in which an organism replicates its DNA and divides in half, producing two identical daughter cells

• conjugation
• binary fission
• endospore
• nitrogen fixation

Which of the following is true for both bacteria and viruses?

• both contain genetic material

• can be killed using antibiotics

• have a cell membrane

• have a protein coat

A bacterium reproduces asexually by dividing to form two new bacterial cells. What is the name of the process by which bacteria reproduce?

• meiosis

• mitosis

• budding

• binary fission

What process is this?

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

Which viral life cycle kills its host cell by lysing (bursting)?

• Lysogenic Cycle

• Lytic Cycle

• Binary Fission

• Conjugation