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Nutrition and Digestive system
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This assessment is worth 95 points.
1. Which of the following is not true for the bird digestive system? (1
point)
a.
b.
c.
d.
e.
The crop is a structure involved in mechanical digestion.
Small stones called grit are often found in the gizzards of birds.
Birds have a continuous digestive tract from mouth to anus.
The gastrointestinal tract and accessory organs produce substances
involved in chemical digestion.
Food is broken apart in the gizzards of birds.
2. This layer of the digestive tract is composed of primarily simple
columnar epithelial cells which may be involved in secretion,
digestion, absorption, or a combination of these functions. (1 point)
a.
b.
c.
d.
e.
muscularis
mucosa
serosa
submucosa
peritoneum
3. Which of the following is not true of the mammalian stomach? (1
point)
a.
b.
c.
d.
e.
Mucus provides a protective layer which prevents digestion of the
lining.
Gastrin, produced by endocrine cells, promotes secretion of
intestinal digestive juices.
Chief cells produce a proenzyme which digests proteins when
activated.
Hydrochloric acid, produced by parietal cells, activates pepsinogen.
Hydrochloric acid, produced by parietal cells, helps denature
proteins.
4. Which of the following is not true for carbohydrate metabolism? (1
point)
a.
Glycogen, a storage polysaccharide of animals, is stored primarily in
the liver and muscles.
b.
c.
d.
e.
Starch, a storage polysaccharide of plants, is an important food
source for many animals.
Animals produce cellulases which hydrolyze cellulose for their
energy needs.
Glucagon, a hormone from the pancreas, promotes the catabolism
of glycogen.
Carbohydrates are absorbed in the form of monosaccharides.
5. Which of the following is produced by the pancreas? (1 point)
a.
b.
c.
d.
e.
Glucagon is produced by endocrine cells.
Bicarbonate ions are produced by exocrine cells.
Chymotrypsinogen is produced by exocrine cells.
Amylase is produced by exocrine cells.
All of these are produced by the pancreas.
6. In addition to conserving bile components, what is another important
function of enterohepatic circulation? (1 point)
a.
b.
c.
d.
e.
Promotes the detoxification of potentially harmful substances that
are absorbed from food material before being carried to other
organs.
Promotes the production of secretin by the pancreas which effects
glucagon and insulin production.
Promotes the production of bile which is important for carbohydrate
and protein digestion.
Promotes the conversion of chymotrypsinogen into trypsin in the
portal veins of the liver.
Promotes the excretion of fat-soluble vitamins from the body.
7. What is a function of the liver? (1 point)
a.
b.
c.
d.
e.
Stores glycogen for short-term energy reserves.
Synthesizes lipoproteins which are necessary for lipid transport.
P450 enzyme system is involved in detoxification of potentially
harmful substances.
Fixed macrophages phagocytize obsolete red blood cells and
foreign material.
All of these are functions of the liver.
8. Which is not true for lipid metabolism? (1 point)
a.
b.
The liver synthesizes various lipoproteins which carry lipids.
Fatty acids are broken down into 2-carbon units that enter the Krebs
cycle.
c.
d.
e.
Chylomicrons are large lipid-protein complexes which are
synthesized in the intestinal mucosa.
High levels of HDL contribute to atherosclerosis.
Lipids store more energy per gram than carbohydrates or proteins.
9. Which of the following is true concerning glucose metabolism? (1
point)
a.
b.
c.
d.
e.
Insulin decreases the plasma glucose level.
Cortisol promotes the conversion of amino acids into glucose.
Glucagon promotes the breakdown of glycogen reserves.
Human growth hormone inhibits cellular uptake of glucose by most
cells except CNS neurons.
All of the above are true.
10. Which of the following is not true for vitamin D? (1 point)
a.
b.
c.
d.
e.
This vitamin acts as a hormone.
This vitamin promotes the absorption of calcium from the diet.
A deficiency would be characterized by decreased calcium in the
skeleton.
The sites of activation of this vitamin are the liver and the kidneys.
Vitamin D is produced by skin cells in the presence of infrared
radiation.
11. Every year many small children are poisoned by iron overdose due
to eating vitamin pills. Which of the following might be a likely
explanation of this type of poisoning? (1 point)
a.
b.
c.
d.
e.
Iron is hardly needed by the body; thus small doses are extremely
toxic.
Ferritin transports the iron to vital organs causing cellular damage.
Iron is efficiently recycled and conserved and is not readily excreted
even in overdose.
Large doses of iron are stored in the form of transferrin causing
kidney damage.
Iron is an inhibitor of hemoglobin synthesis.
12. Which of the following is true for protein metabolism? (1 point)
a.
b.
c.
Since the human body does not manufacture all the amino acids,
some, called essential amino acids, are obtained from the diet.
In addition to the essential amino acids, children require two other
amino acids for their growth and development.
Amino acids may be catabolized for energy needs when dietary
d.
e.
proteins are in excess or when dietary carbohydrates and lipids are
insufficient.
If the nitrogen excreted due to amino acid oxidation exceeds
nitrogen intake, this indicates a negative nitrogen balance.
All of the above are true.
13. The digestive system functions in the (1 point)
a.
b.
c.
d.
e.
chemical breakdown of food.
mechanical breakdown of food.
elimination of waste products.
absorption of food molecules.
all of the above.
14. Which of the following is NOT a function of the digestive system? (1
point)
a.
b.
c.
d.
e.
ingestion of food
digestion of food
absorption of food
elimination of digestible wastes
elimination of nondigestible wastes
15. Which of the following would be classified as a carnivore? (1 point)
a.
b.
c.
d.
e.
human
rat
cat
raccoon
brown bear
16. Which represents the proper sequence of human teeth from the front
to the back of the mouth? (1 point)
a.
b.
c.
d.
e.
2 incisors, 1 canine, 3 premolars, 3 molars
2 incisors, 1 canine, 2 promolars, 3 molars
3 incisors, 1 canine, 2 premolars, 2 molars
2 incisors, 2 canines, 2 premolars, 3 molars
2 incisors, 1 canine, 3 premolars, 2 molars
17. The function of the canine teeth in the human is (1 point)
a.
crushing
b.
c.
d.
e.
grinding
shearing
biting
tearing
18. An omnivore is specialized to eat (1 point)
a.
b.
c.
d.
animals only
plants only
bacteria only
both plants and animals
19. A ruminant is (1 point)
a.
b.
c.
d.
e.
a carnivore with no extra digestive specializations
a carnivore with extra stomach separations
an omnivore
a herbivore with no extra digestive specializations
a herbivore with extra stomach separations
20. All of the following statements are true about the clam's digestion
EXCEPT (1 point)
a.
b.
c.
d.
e.
The clam is a sessile filter feeder.
The clam has a single opening for the entry of food and the exit of
digestive wastes.
The clam is a continuous feeder.
Small food particles are collected on the gills and moved by cilia to
the mouth.
Digestion occurs both extracelluarly and intracellularly.
21. All of the following statements are true about the squid's digestion
EXCEPT (1 point)
a.
b.
c.
d.
e.
The squid captures prey by waiting quietly and using a specialized
lure on its tentacles.
The squid's diet includes fish, shrimp, and worms.
The mouth has jaws that bite off pieces of prey with the help of a
toothy radula.
Digestive enzymes are secreted by the digestive gland.
The storage areas of the stomach and cecum are needed because
of discontinuous feeding.
22. An animal with an incomplete gut system is the (1 point)
a.
b.
c.
d.
e.
squid.
earthworm.
planarian.
tapeworm.
grasshopper.
23. Which is NOT true of human salivary glands? (1 point)
a.
b.
c.
d.
e.
They produce an enzyme to begin the digestion of starch.
The set near the ears swell when infected by the virus that causes
mumps.
There are three pairs that open by ducts into the mouth.
Paired ducts open into the mouth near the ear, the inside back
cheek, and under the tongue.
They can become inflamed and cause tonsillitis.
24. The tongue functions to (1 point)
a.
b.
c.
d.
e.
mix food with saliva and assist in swallowing.
link to external muscles that move it about.
consist of skeletal muscle under voluntary control.
have a surface continuous with the mucous membrane of the
digestive tract.
All of the above are correct.
25. Food is prevented from entering the trachea by the (1 point)
a.
b.
c.
d.
e.
pharynx.
larynx.
epiglottis.
glottis
sphincter muscle.
26. Which of these organs has food for the least time and participates
least in digestion? (1 point)
a.
b.
c.
d.
e.
mouth
esophagus
stomach
small intestine
large intestine
27. The main function of the esophagus is to (1 point)
a.
b.
c.
d.
e.
digest proteins.
digest carbohydrates.
transport food from the small intestine to the large intestine.
transport food from the mouth to the stomach.
transport food from the stomach to the large intestine.
28. The Greek root words meaning "within" and "eat" are the basis for
the term (1 point)
a.
b.
c.
d.
e.
stomach.
intestine.
esophagus.
mouth.
pancreas.
29. The tubular structure that moves food by peristalsis from the
pharynx is the (1 point)
a.
b.
c.
d.
e.
epiglottis.
trachea.
tongue.
esophagus.
glottis.
30. The Greek root words meaning "around" and "compression" are the
basis for the term (1 point)
a.
b.
c.
d.
e.
circumesophageal.
epithelial.
submaxillary.
peristalsis.
fistula.
31. The digestive juices found in the stomach include (1 point)
a.
b.
c.
d.
e.
trypsin and bile.
pepsin and hydrochloric acid.
bile and hydrochloric acid.
pancreatic amylase and trypsin.
trypsin and pepsin.
32. The pH of the stomach is usually about (1 point)
a.
b.
c.
d.
e.
2.0
4.0
5.0
7.0
8.0
33. What is the role of HCl in the stomach? (1 point)
a.
b.
c.
d.
e.
symptom of a digestive disorder
only to cause stomach ulcers
digestive enzyme to hydrolyze fats
aids in the digestion of starch
activates a digestive enzyme pepsin
34. Muscles that encircle tubes and act as valves are called (1 point)
a.
b.
c.
d.
e.
constrictors
dilators
sphincters
lacteals
mucosa
35. A correct function of the human stomach is (1 point)
a.
b.
c.
d.
e.
to produce highly basic fluids to kill most bacteria.
to begin the absorption of most small food molecules, especially
sugars and alcohol.
storage of food and mixing with digestive fluids to begin chemical
digestion.
promotion of bacterial fermentation.
absorption of iron to build hemoglobin for red blood cells.
36. The ____ functions to store food, kill bacteria, and partially digest
proteins. (1 point)
a.
b.
c.
d.
e.
mouth
esophagus
stomach
small intestine
large intestine
37. Which of the following is considered an accessory gland in the
digestive system? (1 point)
a.
b.
c.
d.
e.
pharynx
esophagus
stomach
cecum
pancreas
38. In the body, glucose is stored in the liver and muscle as (1 point)
a.
b.
c.
d.
e.
starch.
protein.
glycogen.
fat.
amino acids.
39. Which of the following statements about digestion is NOT
correct? (1 point)
a.
b.
c.
d.
e.
An ulcer can occur when pepsin penetrates the mucous covering of
the stomach or duodenum and begins to digest the underlying
tissues.
The gallbladder produces bile that is continuously released into the
duodenum to digest lipid.
Villi and microvilli add considerably to the surface area of the small
intestine.
The pancreas produces digestive juices in its function as an
exocrine gland.
The liver produces secretions that are involved in digestion.
40. Digestion of starches begins in the human in the (1 point)
a.
b.
c.
d.
e.
mouth.
esophagus.
stomach.
duodenum.
large intestine.
41. Digestion of proteins begins in the human in the (1 point)
a.
b.
c.
d.
e.
mouth
esophagus
stomach
duodenum
large intestine
42. The liver functions in digestion by way of its (1 point)
a.
b.
c.
d.
e.
conversion of hemoglobin to bilirubin and biliverdin
destruction of old red blood cells
production of blood proteins
production of urea
production of bile
43. The hepatic portal vein is located between (1 point)
a.
b.
c.
d.
the hepatic vein and the vena cava.
the mouth and the stomach.
the pancreas and the small intestine.
the small intestine and the liver.
44. Public health workers look for ways to prevent diseases. Which of
the following jaundice-causing disease(s) has/have the potential to
be currently reduced by public health measures. (1 point)
a.
b.
c.
d.
e.
Obstructive jaundice caused by gall-stones.
Obstructive jaundice caused by a cancerous tumor.
Hepatitis A by sewage control and hepatitis B by vaccine.
Hepatitis C by vaccine.
Hemolytic jaundice by blood screening.
45. Abnormally large amounts of bilirubin in the blood will cause (1
point)
a.
b.
c.
d.
e.
cirrhosis of the liver.
kidney stones.
gallstones.
the rolling stones.
jaundice.
46. Insects often have very specific food plants. A species that feeds on
walnut leaves starves when fed hickory leaves, etc. The main
biological reason for this is (1 point)
a.
b.
c.
d.
differences in mouthparts.
variation in the neurons causing different feeding behaviors.
different tolerances to plant chemicals including differences in
digestive enzymes.
variation in food value of plant tissues.
e.
climate.
47. Which of the following is NOT a function of bile salts? (1 point)
a.
b.
c.
d.
e.
act as emulsifiers
needed for fat digestion
aid the enzyme lipase
aid the enzyme maltase
production of vitamin D
48. Name the structure and organ that has microvilli, maltase, and
absorbs nutrients? (1 point)
a.
b.
c.
d.
e.
villus, large intestine
villus, small intestine
villus, stomach
folds, stomach
pyloric sphincter, appendix
49. In mammals, fats are absorbed (1 point)
a.
b.
c.
d.
e.
in the large intestine.
in the stomach.
primarily into the blood capillaries.
primarily into the ducts of the lacteal.
None of the above are correct.
50. The finger-like projections along the surface of the small intestines
are called (1 point)
a.
b.
c.
d.
e.
mucosa.
lacteals.
capillaries.
villi.
appendix.
51. Microvilli form a brush border on the cells of the (1 point)
a.
b.
c.
d.
esophagus.
stomach
duodenum.
tongue.
e.
pharynx.
52.
53. The duodenum is the site for (1 point)
a.
b.
c.
d.
a duct from the liver that introduces bile.
a pancreatic duct that introduces basic fluids to neutralize the
stomach acid.
highly acidic stomach contents.
all of the above.
54. Fat absorption differs from other foods because its breakdown
products are (1 point)
a.
b.
c.
d.
formed in the large intestine.
absorbed directly into the blood.
absorbed into the lacteal.
absorbed only when glucose is not present.
55. Villi serve to (1 point)
a.
b.
c.
d.
absorb nutrients.
secrete bile.
produce antibodies.
synthesize vitamins.
56. Liver does NOT function in the production of (1 point)
a.
b.
c.
d.
bile.
digestive enzymes.
blood proteins.
blood lipoproteins.
57. Which of the following human digestive enzymes is NOT correctly
matched to its substrate? (1 point)
a.
b.
c.
d.
e.
pepsin?protein
trypsin?nucleic acid
salivary amylase?starch
lipase?fat
maltase?maltose
58. Protein digestion is confined to the (1 point)
a.
b.
c.
d.
e.
mouth, stomach, small intestine.
stomach, small intestine.
stomach, esophagus, and small intestine.
mouth and large intestine.
small intestine, large intestine, mouth.
59. The Latin root word meaning "shaggy hair" and is the basis for the
term (1 point)
a.
b.
c.
d.
e.
epidermis.
intestine.
esophagus.
stomach lining.
villus.
60. Secretin, gastrin, and CCK in humans are (1 point)
a.
b.
c.
d.
all enzymes used to digest food.
hormones that control digestive secretions.
all breakdown products of digestion.
produced in the gut by an acid pH.
61. Secretin functions to stimulate the (1 point)
a.
b.
c.
d.
release of bile.
release of pancreatic juices, particularly the sodium bicarbonate
portion.
release of gastrin.
release of pancreatic juices, particularly the digestive enzyme
portion.
62. Release of secretin is stimulated by the action of (1 point)
a.
b.
c.
d.
e.
the alkaline material in the duodenum.
the bile.
muscular contractions in the stomach.
nerves to the duodenum.
acid food on the wall of the duodenum.
63. Water is absorbed primarily by the (1 point)
a.
b.
colon.
duodenum.
c.
d.
e.
stomach.
anal canal.
esophagus.
64. Which of the following statements about the colon is NOT true? (1
point)
a.
b.
c.
d.
e.
The colon is active in water absorption, removing about 95% of the
water that enters it and returning it to the bloodstream.
Insufficient absorption of water can result in diarrhea that may be
life-threatening.
The feces consist of about 75% water and 25% solids that are
mainly bacteria from the intestinal tract.
The last 20 cm of the colon is the rectum, which terminates in the
anus.
Cells in the walls of the large intestine absorb vitamin K that is
produced by bacteria resident in the colon.
65. An inflamed gall bladder causes pain when it is stimulated to release
bile. The most likely trigger for this stimulation is the hormone (1
point)
a.
b.
c.
d.
CCK
gastrin
secretin
GIP (gastric inhibitory peptide)
66. If the large intestine becomes irritated and peristalsis increases,
____ may result. (1 point)
a.
b.
c.
d.
e.
constipation
diarrhea
appendicitis
ulcers
hernias
67. Which is NOT a correct association of intestinal disorders? (1 point)
a.
b.
c.
d.
diarrhea?rapid movement of feces that may result in dehydration
constipation?too slow movement of feces permitting hard and dry
feces
polyps?small growths on the epithelial lining that can become
cancerous
jaundice?nutrition deficiency
e.
All of the above are correct.
68. Which of the following statements about nutrients is NOT true? (1
point)
a.
b.
c.
d.
e.
Very little protein is needed to supply the body's recommended daily
allowance.
Incomplete protein sources can be combined to include all the
essential amino acids in a meal.
The daily diet should contain most of its energy in fats.
A high-fiber diet can be detrimental since it impairs absorption of
certain minerals.
Products of fat digestion are transported by the lymph and blood to
the tissues.
69. Starches are digested to _____, which is/are converted to ______ in
the liver, which is/are broken down to be released as ______ in the
blood. (1 point)
a.
b.
c.
d.
e.
glucose, glycogen, glucose
glucose, glucose, amino acids
glycogen, glucose, glucose
amino acids, glucose, glycogen
glucose, glycogen, glycogen
70. Which of the following statements is NOT true about cholesterol? (1
point)
a.
b.
c.
d.
e.
Low-density lipoprotein carries cholesterol from the liver to the body
tissues.
High-density lipoprotein carries cholesterol from the body tissues to
the liver.
The intake of soluble fiber in the diet may reduce cholesterol in the
body.
LDL-cholesterol is responsible for the formation of plaque, deposits
of cholesterol in the arteries.
A diet high in saturated fats reduces the levels of LDL-cholesterol in
the blood.
71. Which of the following statements is NOT true about vitamins and
minerals? (1 point)
a.
b.
Macrominerals are required in amounts more than 100 mg per day,
and include such things as calcium, sodium, and phosphorus.
Microminerals are required in amounts less than 20 mg per day, and
c.
d.
e.
include such things as iron, copper, and zinc.
Trace amounts of minerals such as nickel, arsenic, and selenium
are required in the body.
Vitamins are produced within the body from coenzymes such as
NAD+ and FAD.
The use of vitamin pills is discouraged since the presence of
excessive amounts of vitamins can cause illness.
72. Cancer patients receiving chemotherapy may lose their sense of
taste and food no longer tastes good to them. What effect would this
have on the human digestive process? (1 point)
a.
b.
c.
Starvation might be possible since the pleasure sensation of taste
has evolved to promote eating, and without this pleasure of taste, a
person may stop eating.
The function of taste buds feeding to the brain is unrelated to the
chemical machinery of digestion.
We would not stop eating because we do not gain the satisfaction of
fulfilling hunger.
73. Saliva contains the hydrolytic enzyme, salivary amylase, which
initiates the breakdown of the polysaccharide ______ into the
disaccharide, maltose. (1 point)
a.
b.
c.
d.
e.
cellulose
sucrose
glucose
starch
fructose
74. Which of the following is not a heterotroph based on the type of food
consumed? (1 point)
a.
b.
c.
d.
e.
detritovore
herbivore
carnivore
omnivore
vegan
75. In order for extracellular digestion to occur in animals, which of the
following must occur? (1 point)
a.
b.
food ingestion/physical fragmentation
chemical degration
c.
d.
e.
blood circulation
absorption of smaller molecules
a, b, and d
76. Gizzards designed to grind food are found in (1 point)
a.
b.
c.
d.
e.
mammals
insects
birds
marsupials
monotrenes
77. The stomach produces (1 point)
a.
b.
c.
d.
e.
HCl
pepsinogen
pepsin
b and c
a, b, and c
78. Which of the following describe the sequential processes occuring in
the stomach? (1 point)
a.
b.
c.
d.
e.
peristaltic waves of contraction propel the food along the esophagus
gastric juices are secreted with the arrival of food into the duodenum
HCl and pepsin begin digestion of proteins into shorter polypeptides
the acidic chyme is then transferred through the pyloric sphincter
b, c, and d
79. The food molecules that are primarily altered in the stomach are (1
point)
a.
b.
c.
d.
e.
celluloses
carbohydrates
sugars
proteins
fats
80. The villi and microvilli on the surface of the small intestine (1 point)
a.
b.
secrete bicarbonate
enable the small intestine to stretch
c.
d.
e.
increase the absorptive surface
produce bile salts
help break the food into smaller particles
81. Bicarbonate that neutralizes stomach acid is produced by the (1
point)
a.
b.
c.
d.
e.
duodenum
small intestine
pancreas
large intestine
liver
82. The first organ to receive the products of digestion after absorption
is the (1 point)
a.
b.
c.
d.
e.
duodenum
pancreas
liver
gallbladder
colon
83. The triglycerides are combined with proteins in the small intestine to
make them into water soluble particles which are called (1 point)
a.
b.
c.
d.
e.
chyme
zymogens
pepsin
chylomicrons
lipases
84. The chylomicrons are absorbed into the (1 point)
a.
b.
c.
d.
e.
blood capillaries
lymphatic capillaries
hepatic portal vein
hepatic portal artery
neck veins
85. Which of the following small intestinal digestive products must be
reassembled and coated with proteins and bile detergents before
being absorbed into the lymphatic system? (1 point)
a.
b.
c.
d.
e.
amino acids and small polypeptides
fatty acids and monoglycerides
sugars
bile pigments and bile salts
vitamins and minerals
86. The gallbladder secretes into the small intestine a fluid that can
make the fat partially water soluble. It is called (1 point)
a.
b.
c.
d.
e.
chyme
bile
chylomicron
emulsion
lipoprotein
87. Since the hepatic portal vein empties into the liver it is able to
control the amounts of (1 point)
a.
b.
c.
d.
e.
alcohol and drugs
toxins, pesticides, carcinogens
glucose
b and c
a, b, and c
88. Excess blood glucose is removed by the liver to convert it into (1
point)
a.
b.
c.
d.
e.
cellulose
maltose and other disaccharides
starch
glycogen
all of the above
89. The secretion of pepsinogen and HCl is controlled by the
hormone (1 point)
a.
b.
c.
d.
e.
gastrin
pepsin
insulin
cholecystokinin
secretin
90.
91. In what way are vitamins and essential amino acids similar to
humans? (1 point)
a.
b.
c.
d.
e.
They are derived from the same precursor molecules.
Both are integral parts of enzymes.
They cannot be synthesized and must be ingested.
Both are needed to synthesize steroid hormones.
Both contain metal ions in the molecules.
92. Cnidarians and some flatworms have a gastrovascular cavity. There
can be no specialization in this type of digestive system because (1
point)
a.
b.
c.
d.
e.
all cells are exposed to all phases of digestion
digestive enzymes are released intracellularly
there is only one opening in this type of digestive system
a, b, and c
a and c
93. Earthworms have a specialized organ for grinding their food into
smaller pieces. They also have an organ that can be used for food
storage. Select the choice that has both correct terms. (1 point)
a.
b.
c.
d.
e.
pharynx and mouth
mouth and gizzard
gizzard and crop
crop and intestine
pharynx and crop
94. If one examined the various layers of the gastrointestinal tract of a
vertebrate, they would encounter (going from outside the tract to
inside of the tract) (1 point)
a.
b.
c.
d.
e.
the submucosa, the mucosa, the lumen, the plexuses, and the
serosa
the serosa, submucosa, and the mucusa
the serosa, submucosa, and the lumen
the mucosa, the plexuses, and the serosa
the serosa, the mucosa, and the submucosa
95. In the human digestive system, the stomach produces about 2 liters
of HCl and other gastric secretions everyday. The acid secretion of
the stomach (1 point)
a.
b.
c.
d.
e.
promotes a low pH
promotes a high pH
keeps pepsin active
a and c
b and c
96. Select the mismatched digestive enzyme and substrate. (1 point)
a.
b.
c.
d.
e.
trypsin — proteins
lactase — disaccharides
chymotrypsin — DNA and RNA
amylase — starch
pepsin — proteins
97. Select the mismatched vitamin and its deficiency symptom or
disorder. (1 point)
a.
b.
c.
d.
e.
vitamin A — nightblindness
vitamin B1 — beriberi
vitamin C — scurvy
vitamin D — pernicious anemia
vitamin K — severe bleeding