Sample Exam 2 - Form A Name(print): BK3311D Spnng2007 Dr....

Info iconThis preview shows pages 1–8. Sign up to view the full content.

View Full Document Right Arrow Icon
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 2
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 4
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 6
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 8
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Form A Name(print): BK3311D Spnng2007 Dr. Zhao Name(sign): EXAM 2 SELECT THE SINGLE BEST ANSWER FOR EACH OF THE FOLLOWING: (2.5 points for each question) 1. When an animal encounters an antigen for the second time, it is capable of producing a massive and rapid immune response to the antigen. The cells responsible for this rapid response are called cells. . memory effector humoral immunization antigenic (DQOU'OJ 2. Which of the following activities is not normally involved in preventing pathogens from infecting the mucous membranes of Human? . Beating cilia . Lysozyme production Secretion of HCl Secretion of interferon none of the above (DQOU‘W 3. Pathogens that reach the digestive tract are often destroyed by saliva. B cells. stomach acids. T cells. Both a and c (DQOU'SD 4. Cnidarians a. have radial symmetry. have gastrovascular cavities have hemolymph all of the above. . both a and b. (DO—OU' 5. Most researchers believe that the first type of symmetry to evolve in multicellular animals was . bilateral. segmented. unilateral. dorsal—ventral. radial. (DO-00"!” 6. Gas exchange in animals always involves a. b. extra—cellular respiration. breathing movements. c. muscular control of exchange. d. diffusion across membranes. e. active transport of gases. 7. The respiratory system of insects consists of a. branched air tubes called spiracles that supply capillaries. b. branched air tubes called tracheae that supply capillaries. c. branching gill systems that end in openings called tracheae. d. branching gill systems that end in openings called spiracles. e. extensive layers of gas exchange tissue of the skin. 8. One effect of cigarette smoking on the respiratory system is to a. remove mucus from the airways. b. immobilize cilia lining the airways. c. speed air flow through the airways. d. increase the production of the C02. e. increase surface area in alveoli. 9. The retrovirus HIV specifically destroys Helper T cells and thus disrupts a. the humoral immune response. b. the cellular immune response. c. bothzthe humoral and cellular immune responses. d. the inflammatory response. e. the complement cascade. 10. When the receptor of a helper T cell binds to a pathogen being presented on a macrophage, it a. b. c. d. e. e. 12. a. b. c. d. e. activates itself. secretes interleukin-2. activates B cells. All of the above b and c only. bacteria parasitic worms insects . vertebrates fishes The lungs expand in inhalation because the diaphragm Contracts upward. the shoulder girdle moves upward. the volume of the chest cavity increases. lung tissue actively stretches. the lung tissue rebounds from exhalation. 13. Most of the 002 in the blood is transported a. bound with hemoglobin. b. as dissolved gas. c. as HCO3—. d. as H2C03. e. as calcium carbonate. 14. Which of the following animals is most likely to excrete mostly uric acid instead of ammonia or urea? fishes . elephants . earthworms flatworms . ducks (0000'!!! 15. In which of the following are nitrogenous wastes eliminated via the gut? a. Flame cells of flatworms b. Metanephridia of the earthworms c. Malpighian tubules of insects d. nephrons of the human kidney e. All of the above 16. During filtration, which of the following does not enter Bowman’s capsule from the bloodstream? a. Water b. Glucose c. Ions d. Amino acids e. Plasma proteins 17. The major function of the colon or large intestine is a. the digestive breakdown of foods. b. to absorb nutrients from foods. c. to house parasitic bacteria. d. the secretion of bile and enzymes. e. to reabsorb water. 18. The hormone secretin is a chemical message . secreted by the pancreas. . secreted by the stomach. . that triggers pancreas to release enzymes. . that triggers the intestine to release enzymes. . that triggers pancreas to release bicarbonate. (DQOO‘BI 19. The major enzyme produced by the stomach is a. amylase. b. chyme. c. mucus. d. pepsin. e. trypsin. 20. 21. 22. 23. 24. 25. Beer contains ethyl alcohol, which inhibits ADH production. After consuming beer, the kidney produces copious concentrated urine. a small volume of concentrated urine. a small volume of dilute urine. copious dilute urine. None of the above (DQOO‘W What generally maintains the electric charge across the neuronal membrane? a. Sodium—potassium pump b Action potential c. Resting potential d Voltage—gated channels e Negative ion pump During depolarization, the neural membrane potential is restored when Na+ ions rush outward through the membrane. K+ ions rush outward through the membrane. Cl— ions rush inward through the membrane. a pump moves ions to their original concentrations. the membrane becomes freely permeable to many ions. (DQOU'W The myelin sheath that surrounds some axons in the peripheral nervous system is formed by a. neurons. Schwann cells. . oligodendrocytes. synapses. None of the above (DQOU' Which term refers to organisms that depend largely on external sources of heat to maintain body temperature? Homeothermic . Endothermic Heterothermic Ectothermic None of the above (DQOU'DJ Certain amino acids are called essential amino acids because they a. are required for making protein. b. cannot be made from other amino acids and must be obtained from' food. c are universally needed by all animals. d. are essential as an energy source. e. are required for making nucleic acids. 26. In which order are stored fuels utilized during starvation? a. Fats, glycogen, proteins b. Glycogen, proteins, fats c. Proteins, fats, glycogen d. Fats, proteins, glycogen e. Glycogen, fats, proteins 27. Which type of tissue is responsible for secreting saliva? a. Connective b. Epithelial 0. Matrix d. Muscle e. Nervous 28. Which of the following statements about brown fat is false? a. It contains abundant mitochondria. b. It provides the most energy for shivering. c. It allows metabolic fuels to be consumed without producing ATP. d. New born babies have brown fat. e. It has lots of blood vessels. WNW NK Coll Monocfie Thymus pm"st J J i i 1 2 . 3 29. Refer to above Figure. Which of the following is true of cells from path 3 (thymus) in the accompanying figure? produce memory cells ' produce cytotoxic and helper T cells . migrate to the lymph nodes directly responsible for cell—mediated immunity All of the above (DQOU'ID 30. In an open circulatory system, there is no heart. there is a gastrovascular cavity. there are no blood vessels. blood flows out of the body. there is no distinction between blood and tissue fluid. (DD-DUI!) .31. In humans, which vessel empties into the right atrium? a. Pulmonary veins b. Anterior vena cava c. Posterior vena cava d. Pulmonary artery e Both b and c 32. The most abundant cells in the blood are a. erythrocytes. b. leukocytes. c. phagocytes. d. platelets. e. None of the above 33. Which of the following statements about gastrovascular cavities is false? a. Organisms with gastrovascular cavities tend to be only a few cells thick. b. Gastrovascular cavities are highly branched. c. Gastrovascular cavities are filled with interstitial fluid. d. The diffusion path length in organisms with gastrovascular cavities is usually short. e. Flatworms have gastrovascular cavities. 34. Homeostasis refers to the tendency to keep the body systems a. matched to the external environment. b. the Same metabolic rate. c. at a steady state over time. d. under the control of the brain. e. at the same temperature anytime. For short answer questions, give concise, intelligible answers; complete sentences are not necessary. (2pts) The human central nervous system is composed of The peripheral nervous system is composed of neurons that transmit information to the central nervous system and neurons that transmit information away from the central nervous system. A reflex arc occurs when the incoming information is transmitted through interneurons of the spinal cord to outgoing neurons, without the info first being sent to and processed by the (3.5pts) For each of the human digestive organs listed in the lefi column below, place the letter of each activity in the right column below that is an important function occurring in that organ. Organs Activities Mouth and salivary glands: a. mechanical breakdown of food Stomach: ' b. storage of food Pancreas: c. production of digestive enzymes Small intestine: d. absorption of nutrient molecules Large intestine: e. absorption of water f. production of a lot of acid (6.5 pts)Labeling Put the names by the lines to a human digestive system. (3pts) Matching: A. B. EGO loop of henle Bile collecting duct estivation ectotherms Bowman’s capsule passes urine to the renal pelvis summer torpor the long U turn; functions in water and salt reabsorption collects filtrate from the blood secreted by pancreas absorb heat from surroundings secreted by liver ...
View Full Document

This note was uploaded on 07/12/2011 for the course BIO 311D taught by Professor Reichler during the Spring '08 term at University of Texas.

Page1 / 8

Sample Exam 2 - Form A Name(print): BK3311D Spnng2007 Dr....

This preview shows document pages 1 - 8. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online