Biology 1108 Dr. Celeste Humphrey Test # 3

Transcription

1 Test # 3 Page # 1 Biology 1108 Dr. Celeste Humphrey Test # 3 1. Which cells stimulate B cells to divide and produce antibodies? a. mast cells d. killer T cells b. platelets e. helper T cells c. macrophages 2. Which of the following is NOT generally considered to be a role of the lymphatic system? a. maintain fluid and electrolyte balance in the body b. assist in the work of the immune system c. transport glucose to cells for respiratory demands d. transport certain fatty acids from the intestinal villi to the blood 3. Natural killer cells destroy target cells by: a. releasing antibodies, which break down the cell membranes b. releasing cytokines, perforins and granzymes c. releasing histamine, which signals other blood cells to aggregate d. phagocytosis e. releasing lysomal enzymes, which digest the target cells 4. Why are corneal transplants so successful? a. corneas of all individuals tend to display the same MHC antigens b. the corneas of pigs are so similar to those of humans, xenotransplantation is almost always successful c. doctors have perfected the technique for transplanting corneas d. corneas are avascular and out of reach of lymphocytes e. there are a numerous donors of corneas, so the success rate of transplantation is high 5. An autoimmune disease is characterized by: a. an extreme reaction during the secondary response b. lack of resistance to viruses c. systemic analphylaxis d. a viral infection that slowly destroys all of an individuals helper T cells e. a hypersensitive reaction in which the body responds immunologically against its own tissues 6. Most of the H 2 O and all of the nutrients are absorbed by the: a. colon c. small intestine b. stomach d. esophagus

2 Test # 3 Page # 2 7. The exchange of gases in the gills of fishes is facilitated by: a. the counter-current flow of blood in the gills b. the respiratory pigment hemocyanin c. high O 2 concentration in H 2 O d. the thin walls of the capillaries of the gills e. choices a. and d. facilitate gas exchanges in fishes 8. Oxygen moves across the respiratory interface primarily through: a. atmospheric pressure d. active transport b. facilitated diffusion e. pinocytosis c. simple diffusion 9. Which of the following is true regarding cellulose in the human diet? a. it s a source of bulk d. it s an important source of fiber b. we can t digest it e. all of the above c. it aids colon function 10. Some important functions of minerals include their role in/as: a. enzyme cofactors d. hormone cofactors b. neurotransmitters e. all of the above c. maintaining fluid balance 11. A hungry student eats a lunch consisting of a hamburger in a bun, an order of french fries, and a glass of milk. Of the nutrients in this meal, the one that provides the most calories per gram is digested by which enzyme? a. pepsin d. lipase b. sucrase e. trypsin c. amylase 12. Seed-eating birds pulverize the seeds in their: a. gizzard d. stomach b. cloaca e. intestine c. crop 13. The chemoreceptors involved in regulating breathing rate respond primarily to changes in: a. nitrogen d. carbon dioxide b. carbonic anhydrase e. oxygen c. red blood cells 14. The number one preventable cause of death in the United States is: a. smoking and tobacco use c. murder and suicide b. alcohol use d. traffic accidents

3 Test # 3 Page # The normal pathway in the human respiratory system is: a. trachea, pharynx, alveolus, bronchus b. bronchus, bronchiole, pharynx, trachea c. alveolus, bronchus, alveolus, pharynx d. pharynx, trachea, bronchus, alveolus 16. The driving force that moves blood back to the heart in the veins is: a. skeletal-muscle contraction b. active transport c. blood pressure d. muscles in the veins e. all of the above 17. Which of these statements is NOT true for gills operating in water? a. water can support the delicate gill filaments b. water is difficult to move over the gill surface c. keeping the membranes moist is no problem d. water carries more oxygen than air e. oxygen content in water depends on temperature 18. The humoral immune response: a. includes defense by phagocytosis b. involves the secretion of antibodies c. is another name for the inflammatory response d. is triggered directly by histamine e. choices a. and b. are true of the humoral response 19. A vaccine contains: a. a variety of lymphocytes b. weakened or killed disease agents c. antibodies d. interleukin 1 e. memory cells 20. The HIV virus primarily affects: a. memory B-cells d. antibodies b. helper T-cells e. the inflammatory response c. plasma B-cells 21. Differentiation refers to the process by which: a. a cell becomes specialized for a particular job b. the embryo changes form c. the organs systems of the embryo form d. the egg and sperm nuclei fuse

4 Test # 3 Page # Which of the following substances would the stomach absorb? a. glucose c. alcohol b. amino acids d. peptides 23. Which of the following is NOT a criterion for animals that obtain all the oxygen they need across body surface? a. high surface to volume ratio b. moist body surface c. covering of slimy mucus d. high metabolic rate 24. Which one of the following statements is NOT true of the digestive system of most higher land animals? a. it begins with a mouth and ends with an anus b. it frequently depends on microorganisms to perform vital functions c. the surface area is reduced as much as much as possible to permit easy passage of food d. it has a mechanism for chewing and grinding the food e. it includes a chamber for food storage 25. Which one of the following digestive enzymes would be most likely to catalyze the reaction, C 12 H 22 O 11 + H 2 O C 6 H 12 O 6 + C 6 H 12 O 6 a. maltase d. endopeptidase b. amylase e. exopeptidase c. lipase 26. Which of the following are correctly matched? a. Vitamin A/visual pigments b. Vitamin B12/ red blood cell production c. Vitamin D/calcium absorption d. Vitamin K/blood clotting e. All of the above 27. If you eat a pepperoni pizza, the digestion of the crust (starch) begins in the: a. mouth d. small intestine b. esophagus e. large intestine c. stomach 28. If you eat a pepperoni pizza, the digestion of the fat in the pepperoni is completed by: a. pepsin d. bile b. trysin e. c. and d. c. lipase

5 Test # 3 Page # The exchange of gases in the gills of fishes is facilitated by: a. the respiratory pigment hemocyanin b. the thin walls of the efferent vessel c. the thin walls of the capillaries of the lamellae d. the counter-current flow of blood in the lamellae e. choices c. and d. facilitate gas exchange in fishes 30. Oxygen moves across the respiratory interface primarily through: a. active transport d. simple diffusion b. pinocytosis e. atmospheric pressure c. facilitated diffusion