BIO Unit 1part2: Homeostasis, Bacteria and Viruses

Which of the following statements best describes the size difference between bacteria and viruses?

• Bacteria are generally smaller than viruses.

• Viruses are generally larger than bacteria.

• Bacteria are generally larger than viruses.

• Bacteria and viruses are the same size.

Which statement supports the claim that viruses are not alive?

• Viruses can be treated with antibiotics, while bacteria cannot.

• Bacteria cause diseases by directly destroying cells, while viruses do not.

• Viruses require a host cell to replicate, while bacteria can reproduce independently.

• Bacteria are always harmful, while viruses are always beneficial.

Tags

NGSS.MS-LS1-1

Which best compares bacteria and viruses?

• Bacteria are smaller than viruses.
• Bacteria cause disease, but viruses do not.
• Bacteria are living organisms, but viruses are not.
• Bacteria have genetic material, but viruses do not.
  

Tags

NGSS.MS-LS1-1

What is the primary role of homeostasis in the human body?

• To maintain a stable internal environment.

• To increase the body's temperature.

• To promote rapid changes in the body.

• To eliminate all external influences.

How does the body respond to a decrease in body temperature to maintain homeostasis?

• By increasing blood flow to the skin.

• By decreasing metabolic rate.

• By shivering to generate heat.

• By sweating to cool down.

How did Redi's experiment prove that maggots didn't spontaneously appear on meat, but were put there by flies?

• Maggots were found in all of the sealed and unsealed jars of rotting meat.

• Maggots were not found in the sealed jars of rotting meat.

• Maggots were not found in either the sealed or unsealed jars of rotting meat.

• Only the broth with the flask open to the air contained living organisms.

What was Francesco Redi's hypothesis about maggots on meat?

• Maggots are produced by rotting meat.

• Maggots are produced by flies.

• Maggots appear spontaneously.

• Maggots are produced by bacteria.

How do vaccines work?

• Pieces or weak versions of the virus are injected causing an immune response

• Pieces or weak versions of a bacteria are injected causing an immune response

• Destroying the walls of the virus, causing it to die

• Destroying the walls of the bacteria, causing them to die

Antibiotics work to protect against infections from __________________.

• bacteria

• viruses

• Both bacteria & viruses