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Unit 5 Exam Review
Supplemental Instruction
Iowa State University
Paige Stieneke
BIOL 256
Dr. Karri Haen
May 2, 2013
120 Questions on the final exam: 65 questions will be from Unit 5 (including pictures), 55
questions will be from Units 1-4
1. Chief cells
a. Produce pepsinogen
b. Produce mucin
c. Produce HCl
d. Are found in the intestine
2. Chyme is created in the
a. Small intestine
b. Esophagus
c. Stomach
d. Mouth
e. Large intestine
3. Nervous control of gastric secretion is provided by:
a. The spinothalamic tract
b. The vagus nerve and enteric plexus
c. Somatic neurons in the spinal cord
d. The reticulospinal and vestibulospinal tracts
4. Which of the following is NOT true of saliva?
a. Moistens food and aids in compacting of the bolus
b. Dissolves food chemicals so they can be tasted
c. Cleanses the mouth
d. Contains enzymes that begin the breakdown of proteins
5. Saliva functions as a
a. pH buffer
b. Lubricant
c. Regulator of digestion
d. Major source of digestive enzymes
6. In addition to storage and mechanical breakdown of food, the stomach
a. Is the first site where protein absorption takes place
b. Is the first site where chemical digestion of starch takes place
c. Is the only place where fats are completely digested
d. Initiates protein chemical digestion and denatures proteins
Supplemental Instruction
1060 Hixson-Lied Student Success Center  294-6624 
7. Hydrochloric acid (HCl) is secreted by which of the secretory cells of the stomach?
a. Chief cells
b. Serous cells
c. Parietal cells
d. Mucous neck cells
8. Hepatocytes do NOT
a. Produce digestive enzymes
b. Process nutrients
c. Detoxify
d. Store fat-soluble vitamins
9. Which hormone induces secretion of enzyme-rich pancreatic juice?
a. Secretin
b. Gastrin
c. Cholecystokinin (CCK)
d. Norepinephrine
10. Which helps to neutralize acidic chyme entering the duodenum from the stomach?
a. Pancreatic juice
b. Neither pancreatic juice nor bile
c. Bile
d. Both pancreatic juice and bile
11. Many factors influence BMR. Which of these is the most critical factor?
a. The way skeletal muscles break down glycogen
b. The ratio of surface area to volume (weight) of the body
c. An individual’s body weight
d. The way an individual metabolizes fat
12. When normal heat loss processes are ineffective in a hot environment, elevated body temperatures
a. Promote thyroxine release, increasing BMR
b. Promote rehydration and high blood pressure
c. Depress the hypothalamus and initiate heat stroke
d. Stimulate shivering and vasoconstriction
13. Glycogen is formed in the liver during the
a. Absorptive state
b. Postabsorptive state
c. Digestive state
d. Secretory state
Supplemental Instruction
1060 Hixson-Lied Student Success Center  294-6624 
14. It is thought that high levels of ____ are protective against heart attacks.
a. VLDL’s
b. LDL’s
c. HDL’s
d. LHDL’s
15. Loss of heat to the surrounding air is called
a. Radiation
b. Evaporation
c. Conduction
d. Convection
16. Which organ works to maintain blood glucose homeostasis by storing glucose as glycogen?
a. Liver
b. Pancreas
c. Stomach
d. Small intestine
17. Digestion of table sugar requires
a. Maltase
b. Sucrase
c. Lactase
d. Amylase
18. Select the correct statement about electrolyte absorption.
a. Often used as coenzymes
b. Iron and calcium and absorbed mostly in the small intestine
c. Required to build molecules
d. Absorbed mostly in the stomach
19. Excessive colonic water absorption results in:
a. Constipation
b. Diarrhea
c. Heartburn
d. Indigestion
20. Which is NOT a beneficial function of the normal bacterial flora of the colon?
a. Colonizing the colon to inhibit potential pathogens
b. Synthesizes B complex vitamins and vitamin K
c. Hydrolysis of proteins to supply amino acids
d. Ferments indigestible carbohydrates
Supplemental Instruction
1060 Hixson-Lied Student Success Center  294-6624 
21. Which of the following hormones controls the release of anterior pituitary gonadotropins?
a. FSH
b. LH
c. Testosterone
d. GnRH
22. What controls the arousal phase of the human sexual response?
a. Parasympathetic nervous system
b. Sympathetic nervous system
c. Central nervous system
d. Somatic nervous system
23. Resolution of the human sexual response involves the:
a. Latent period
b. Refractory period
c. Plateau phase
d. Graded potential
24. Which of the following statements about spermatogenesis is not true?
a. Each spermatid forms two sperm
b. The spermatogonium forms the primary spermatocyte
c. The primary spermatocyte forms two secondary spermatocytes
d. The secondary spermatocytes each form two spermatids
25. Which of the following glands produce the greatest proportion of semen?
a. The pituitary
b. Bulbourethral glands
c. Prostrate gland
d. Seminal vesicles
26. Which cells surround developing sperm to provide a blood-testes barrier, which prevents the
immune system from attacking sperm?
a. Prostrate gland cells
b. Leydig cells
c. Sustentacular cells
d. Prostrate gland cells
27. What bursts during ovulation, releasing the ovum?
a. Vesicular follicle
b. Primordial follicle
c. Fallopian tube
d. Corpus luteum
Supplemental Instruction
1060 Hixson-Lied Student Success Center  294-6624 
28. Increased LH
a. Triggers follicle development
b. Triggers menstruation
c. Triggers oogenesis
d. Triggers ovulation
29. Which is NOT a role of prostaglandins in the semen?
a. Decrease viscosity of mucus in cervix
b. Stimulate sperm to finish meiosis so they can fertilize an ovum
c. Facilitate sperm movement through female reproductive tract
d. Suppress female immune response to semen
e. Stimulate reverse peristalsis in uterus
30. The corpus luteum secretes which of the following hormones to prevent new follicle development?
a. Progesterone
b. Estradiol
c. Inhibin
d. Estrogen
31. There are 20 amino acids in proteins and they differ by their
a. Side chain (-R)
b. –COOH group
c. Amine (-NH2) group
d. Hydrogen
32. The movement of water through a semi-permeable membrane from an area of higher water
concentration to lower concentration is called ___, a form of ___.
a. Diffusion, osmosis
b. Osmosis, diffusion
c. Active transport, diffusion
d. Diffusion, active transport
33. A molecule that is a mirror image of another, having a key functional group oriented in a different
direction, is called ____ of the other.
a. Isotope
b. Structural isomer
c. Stereoscope
d. Stereoisomer
34. Where is the respiratory chain?
a. The mitochondrial inner membrane
b. The mitochondrial matrix
c. Cytoplasm
d. Nucleus
Supplemental Instruction
1060 Hixson-Lied Student Success Center  294-6624 
35. Which molecule is used as the final electron acceptor in the respiratory chain?
a. Glucose
b. ATP
c. H2O
d. O2
36. Which autonomic fiber releases norepinephrine as its neurotransmitter?
a. Preganglionic sympathetic fiber
b. Preganglionic parasympathetic fiber
c. Postganglionic sympathetic fiber
d. Postganglionic parasympathetic fiber
37. An excitatory neurotransmitter secreted by motor neurons innervating skeletal muscle is:
a. Acetylcholine
c. Dopamine
d. Calcium
e. Serotonin
38. Very low pitched sounds we can barely hear bend organ of Corti cilia
a. In the portion of the organ of Corti in the scala media
b. In the portion of the organ of Corti near the helicotrema
c. In the portion of the organ of Corti in the endolymph
d. In the portion of the organ of Corti near the round and oval windows
39. There are three layers of neurons in the retina. The axons of which of these neuron layers form the
optic nerves?
a. Rods
b. Cones
c. Ganglion cells
d. Amarcrine cells
40. Name the receptor associated with static equilibrium:
a. Ampulla
b. Cristae
c. Maculae
d. Cupula
41. Which will increase blood pressure?
a. Neuropeptide Y
b. Nitric oxide
c. Parathyroid Hormone
d. Antidiruretic Hormone
Supplemental Instruction
1060 Hixson-Lied Student Success Center  294-6624 
42. Where is the pacemaker of the heart located?
a. Right atrium
b. Right ventricle
c. Left atrium
d. Left ventricle
43. A sarcomere is:
a. The M line
b. The area inside the A band
c. The area inside the H zone
d. The area between two Z disks
44. Heart sounds other than those caused by the closing of valves are called…
a. Heart murmurs
b. Arrhythmias
c. Patent ductus arteriosus
d. Myocardial infarctions
45. What is the least specific type of immunity?
a. Adaptive immunity
b. Innate immunity
c. Cell-mediated immunity
d. Humoral immunity
46. When a person holds their breath for a long period of time, they have induced
a. Respiratory acidosis
b. Respiratory alkalosis
c. Metabolic acidosis
d. Metabolic alkalosis
47. The exchange of air during normal breathing is
a. Inspiratory reserve volume
b. Residual volume
c. Tidal volume
d. Expiratory reserve volume
48. The chief antibody mediated mechanism used against cellular antigens, such as bacteria, is:
a. Antibody production
b. Inflammation
c. Complement fixation
d. Osponization
Supplemental Instruction
1060 Hixson-Lied Student Success Center  294-6624 