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Practice Exam:
Unit 4
Supplemental Instruction
Iowa State University
Leader:
Course:
Instructor:
Date:
Landon
Biology 212
Dr. Vleck
11/29/10
1. Which of the following holds the least amount of oxygen?
a.) Warm fresh water
b.) Cold fresh water
c.) Warm sea water
d.) Cold sea water
2. If a fish could change its body functions readily; what would it change to decrease its oxygen
intake through gills?
a.) Change its efferent arteries to afferent arteries
b.) Increase size of the lamella
c.) Change flow of blood and water opposite to parallel
d.) Decrease operculum flap size
e.) None of the above
3. Which of the following is NOT true of hemoglobin?
a.) A protein with four subunits
b.) Binds CO2
c.) Binds O2
d.) Binds H+
e.) All of the above are true
4. Which blood cell type is required for adaptive immune response?
a.) Neutrophils
b.) Lymphocytes
c.) Macrophages
d.) Natural killer cells
e.) All of the above
5. A lymphocyte
a.) Expresses several different antigen receptors
b.) May mature in bone marrow to a cytotoxic T cell
c.) May mature in the thymus to a helper T cell
d.) Is phagocytic and participates in the inflammatory response
6. Which of the following describes innate immunity?
a.) Unbroken skin creates a physical barrier that cannot normally be penetrated by
bacteria or viruses
b.) Surface secretions from sebaceous and sweat glands give the skin an acidic pH that is
unfavorable for bacterial colonization
c.) Tears, saliva, and mucous secretions contain lysozyme, an enzyme that digests
bacterial cell walls
d.) Mucus traps microbes and other particles that come in contact with it
e.) All of the Above
Supplemental Instruction
1060 Hixson-Lied Student Success Center  294-6624  www.si.iastate.edu
7. The role of cytotoxic T cells is to attack
a.) Body cells that have been infected
b.) Circulating proteins circulating antibodies
c.) Complement proteins
d.) Extracellular viruses and bacteria
8. Which of the following cell types does HIV preferentially infect?
a.) Cytotoxic T cells
b.) Natural killer cells
c.) Plasma cells
d.) Helper T cells
e.) Memory cells
9. Match up the following
a.) MHC I and Helper T cells
b.) MHC I and CD4
c.) MHC II and CD4
d.) MHC II and Cytotoxic T cells
10. Helper T cells are part of _____.
a.) A cell-mediated immune response
b.) Humoral response
c.) A group of phagocytic white blood cells
d.) Innate immunity
e.) All of the choices are correct.
11. Which of the following is NOT true about lymphocytes
a.) Contain B cells
b.) Contain T cells
c.) Apart of adaptive immunity
d.) Destroy antigens through phagocytosis
12. Which of the following cells are NOT a leukocyte (WBC)
a.) Basophils
b.) Monocytes
c.) Neutrophils
d.) Natural killers
e.) Helper T cells
13. Innate response gets stronger after multiple exposures to the same antigen. T or F
14. A leukocyte most effective against parasites______________.
15. Cytokines-
16. Interferons-
Essays
1. Innate vs. adaptive immunity
2. Name and describe the nodes of the heart
3. Humoral vs. cell mediated response
4. Compare and contrast open vs. closed circulatory systems
5. Explain Hemoglobin Graph