Pathogens, Bacteria and Viruses

What is immunity? 

• The body's ability to produce cells that inactivate foreign cells or substances.

• The body's ability to regulate homeostasis through feedback loops. 

• The body's ability to produce the "fight or flight" response.

• he body's ability to use the endocrine system to fight disease.

When a person is vaccinated, what are they injected with? 

• antibodies to a disease bacterium

• live, inactive viruses

• weakened viruses or antigens from the virus

• blood from a person who has had the disease

Which of the following describes a way that a person's health can be affected by heredity? 

• A person with a family history of obesity is more likely to catch a common cold.

• A person with a family history of high blood pressure is more likely to have heart disease.

• A person with a family history of obesity is less likely to enroll in a weight loss plan.

• A person with a family history of cancer is less likely to be screened for cancer.

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How do human diseases caused by bacteria and diseases caused by viruses react to antibiotics? 

• Neither responds to antibiotics.

• Both respond to antibiotics.

• Viral diseases respond to antibiotics; bacterial diseases do not.

• Bacterial diseases respond to antibiotics; viral diseases do not.

Prokaryotes do not have a nucleus. Which of the following is an example of a prokaryote?

• Virus

• Plant

• Bacteria

• Fungi

Scientists classify viruses as nonliving.

• True
• False

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

Which of these statements is true?

• A virus is unicellular, it has only one cell.

• A virus may sometimes be multicellular, have many cells.

• A virus has no cells

Which of the following is a risk of improperly using antibiotics to treat infections?

• Bacteria may become resistant to antibiotics.

• Antibiotics increase the rate of infection.

• Antibiotics cause other diseases to develop.

• Antibiotics only work once.

Antibiotic resistant bacteria are a problem because:

• It is more difficult to treat people infected with them

• bacteria smell pretty bad

• viruses them grow out of control

• they are not a problem, I love being sick

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