Practice Quizzes -- Essential Concepts for Healthy Living Third Edition

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Practice Quizzes

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Please read each question and select your answer from the choices provided. You must complete all of the questions in order to view your results. At the end of each exam, you have the option to e-mail your results to your instructor.

1: Disease-causing agents of infection are called
	A: antigens.
	B: pathogens.
	C: interferogens.
	D: immunogens.

2: People with sickle cell trait have
	A: sickle cell disease.
	B: shortened life spans.
	C: resistance to malaria
	D: breathing difficulties

3: The organism that supports the growth of a pathogen is the
	A: chain.
	B: antigen.
	C: agent.
	D: host.

4: A virulent pathogen
	A: is destroyed by antibiotics
	B: causes disease easily
	C: affects very few people
	D: is controlled by antigens

5: Which of the following infections is caused by a virus?
	A: typhus
	B: Salmonella food poisoning
	C: common cold
	D: strep throat

6: Which of the following infections is caused by fungi?
	A: cold sores
	B: athlete's foot
	C: strep throat
	D: genital herpes

7: A vector is
	A: an organ that is part of the immune system.
	B: a non-human organism that transmits disease.
	C: a treatment that provides passive immunity.
	D: the core part of a virus that contains DNA

8: Which of the following cells is a leukocyte?
	A: a lymphocyte
	B: an erythrocyte
	C: an astrocyte
	D: an oocyte

9: The ____ system recognizes and combats pathogens and cancer cells.
	A: respiratory
	B: circulatory
	C: reproductive
	D: immune

10: A ____ cell produces antibodies
	A: red blood
	B: plasma
	C: reticulocyte
	D: streptococcus

11: Helper T cells secrete chemicals that
	A: enhance the activity of cytotoxic T cells
	B: stimulate the metabolism of red blood cells
	C: attract phagocytes to the area of infection
	D: a and c are correct

12: HIV affects the immune system by
	A: destroying pathogenic bacteria
	B: deactivating histamine-producing cells
	C: clogging the spleen with platelets
	D: killing helper T cells

13: HIV is transmitted by
	A: sharing dirty towels or bed linens
	B: placental transfer during fetal development
	C: hugging or touching an infected person.
	D: breathing the exhaled air of an infected person

14: Why is it difficult to develop a vaccine that prevents HIV infection?
	A: antibiotics are effective for treating HIV infection
	B: the pathogen that causes HIV infection is unknown
	C: scientists cannot grow HIV in the laboratory
	D: the virus mutates readily

15: Women can develop ____ as a result of untreated chlamydial infections.
	A: SIDS.
	B: cystic fibrosis
	C: sterility.
	D: Huntington disease

Optional: Enter your name and your instructor's E-mail address to have your results E-mailed to him or her.
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