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DHN 101 EXAM 3 2026|ACTUAL
EXAM PRACTICE QUESTIONS WITH
ANSWERS (A+)
Vitamins are classified as being either water soluble or fat soluble. There is
disagreement in the scientific community as to whether one vitamin-like nutrient
is really a vitamin. Which nutrient is not technically classified as a vitamin? -
correct-answer -Choline
Fat-soluble vitamins - correct-answer -vitamins that travel with dietary fats
through the blood stream, vitamins that are stored mostly in the liver and fatty
tissues, and vitamins A, D, E, and K
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Water-soluble vitamins - correct-answer -vitamins that are readily excreted from
the body, vitamins that are easily lost during food processing and preparation,
and vitamins that include the B vitamins and vitamin C
Vitamin roles - correct-answer -a. D: increases calcium and phosphorous
deposition in bones
b. K: assists with blood clotting
c. B-6: important for hemoglobin synthesis
d. A: important for vision
e. E: donates electrons to neutralize free radicals
The B vitamin content of a whole grain is dramatically decreased during the
refining process. To counteract these losses, in the United States, food
manufacturers are required to enrich breads and cereals from milled, refined
grains with which B vitamins? (Check all that apply): - correct-answer -niacin,
Riboflavin, thiamin, and folic acid
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Matching vitamins with symptoms - correct-answer -a. Thiamin: person
complaining of weakness and loss of appetite, nervous tingling throughout the
body, poor coordination, and severe edema
b. Riboflavin: person with inflammation of the mouth and tongue, inflamed skin,
and cracking of the tissue at the corners of the mouth
c. Niacin: person whose initial symptoms included poop appetite, weakness and
loss of weight, progressed to dementia, diarrhea and dermatitis and is at high risk
for death
d. Vitamin B-12: person with anemia characterized by many large red blood cells
in the bloodstream despite adequate folate intake, can lead to nerve
degeneration, paralysis, and death
e. Vitamin C: person with weakness, slow wound healing, bone pain, bleeding
gums, and pinpoint hemorrhages on the skin
An agent that is cancer-causing is said to be ______. - correct-answer -
carcinogenic
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Cancerous cells that divide repeatedly and frequently and do not die are called
_______ cells. - correct-answer -malignant
If these cells grow together to form masses, the masses are called ______, which
invade body tissues and metastasize to other parts of the body. - correct-answer -
malignant tumors
Some cells multiply excessively and form _____ which are not cancerous. -
correct-answer -benign tumors
More vs less vitamin D synthesis - correct-answer -a. Less: older vs younger
person, dark skinned vs light skinned, less vs more time in the sun
b. More: summer vs winter months, southern vs northern latitudes
DHN 101 EXAM 3 2026|ACTUAL
EXAM PRACTICE QUESTIONS WITH
ANSWERS (A+)
Vitamins are classified as being either water soluble or fat soluble. There is
disagreement in the scientific community as to whether one vitamin-like nutrient
is really a vitamin. Which nutrient is not technically classified as a vitamin? -
correct-answer -Choline
Fat-soluble vitamins - correct-answer -vitamins that travel with dietary fats
through the blood stream, vitamins that are stored mostly in the liver and fatty
tissues, and vitamins A, D, E, and K
,2|Page
Water-soluble vitamins - correct-answer -vitamins that are readily excreted from
the body, vitamins that are easily lost during food processing and preparation,
and vitamins that include the B vitamins and vitamin C
Vitamin roles - correct-answer -a. D: increases calcium and phosphorous
deposition in bones
b. K: assists with blood clotting
c. B-6: important for hemoglobin synthesis
d. A: important for vision
e. E: donates electrons to neutralize free radicals
The B vitamin content of a whole grain is dramatically decreased during the
refining process. To counteract these losses, in the United States, food
manufacturers are required to enrich breads and cereals from milled, refined
grains with which B vitamins? (Check all that apply): - correct-answer -niacin,
Riboflavin, thiamin, and folic acid
,3|Page
Matching vitamins with symptoms - correct-answer -a. Thiamin: person
complaining of weakness and loss of appetite, nervous tingling throughout the
body, poor coordination, and severe edema
b. Riboflavin: person with inflammation of the mouth and tongue, inflamed skin,
and cracking of the tissue at the corners of the mouth
c. Niacin: person whose initial symptoms included poop appetite, weakness and
loss of weight, progressed to dementia, diarrhea and dermatitis and is at high risk
for death
d. Vitamin B-12: person with anemia characterized by many large red blood cells
in the bloodstream despite adequate folate intake, can lead to nerve
degeneration, paralysis, and death
e. Vitamin C: person with weakness, slow wound healing, bone pain, bleeding
gums, and pinpoint hemorrhages on the skin
An agent that is cancer-causing is said to be ______. - correct-answer -
carcinogenic
, 4|Page
Cancerous cells that divide repeatedly and frequently and do not die are called
_______ cells. - correct-answer -malignant
If these cells grow together to form masses, the masses are called ______, which
invade body tissues and metastasize to other parts of the body. - correct-answer -
malignant tumors
Some cells multiply excessively and form _____ which are not cancerous. -
correct-answer -benign tumors
More vs less vitamin D synthesis - correct-answer -a. Less: older vs younger
person, dark skinned vs light skinned, less vs more time in the sun
b. More: summer vs winter months, southern vs northern latitudes
