BIOL 121 | BIOL121 Module 9: Nutrition Updated
and Latest Questions and Correct Answers with
Rationale - Portage Learning
1. A 26-year-old woman in her first trimester of pregnancy is discussing her nutritional needs
with her doctor. To prevent neural tube defects, which nutrient is most critical for her to
supplement?
A. Vitamin C
B. Vitamin B12
C. Calcium
D. Folic Acid
Correct Answer: D
Expert Explanation: Folic acid is essential for DNA synthesis and the proper closure of the
neural tube during early embryonic development. Insufficient intake significantly increases
the risk of defects like spina bifida and anencephaly. While Vitamin C supports immune
function, it does not play a role in structural neural tube formation. Public health guidelines
recommend that all women of childbearing age consume 400-600 micrograms daily to
ensure protection during the earliest stages of pregnancy. Many cereal products are now
fortified with folate to help meet this requirement across the population.
2. A woman with a pre-pregnancy Body Mass Index (BMI) of 22.0 is asking about her target
weight gain by the end of her pregnancy. According to clinical guidelines, what is the
recommended range?
A. 11 to 20 pounds
B. 25 to 35 pounds
C. 15 to 25 pounds
D. 28 to 40 pounds
Correct Answer: B
Expert Explanation: For a woman with a normal pre-pregnancy BMI between 18.5 and
24.9, the recommended weight gain is 25 to 35 pounds. This range provides the necessary
nutrients for the fetus while minimizing the risk of birth complications. Gaining too little
weight increases the risk of having a low-birth-weight infant who may face developmental
challenges. Gaining excessive weight can increase the risk of gestational diabetes and
difficult deliveries. Monitoring weight throughout all trimesters is a standard part of
prenatal care to ensure maternal and fetal health.
,3. An infant is 4 months old and the parents are considering starting solid foods. What is the
most important physical milestone that must be achieved before introducing solids?
A. The infant can sit up entirely unassisted for one hour
B. The disappearance of the extrusion reflex
C. The appearance of the first primary tooth
D. The infant is able to hold a spoon independently
Correct Answer: B
Expert Explanation: The extrusion reflex is a natural mechanism where infants push food
out of their mouths with their tongues to prevent choking. This reflex typically fades
between 4 and 6 months of age, signaling physical readiness for spoon-feeding. Introducing
solids before this reflex disappears can lead to frustration for the caregiver and potential
safety risks for the baby. Sitting up with support is another key sign, but the reflex
disappearance is more specific to swallowing mechanics. Solid food introduction should be
gradual and should not replace breast milk or formula as the primary source of nutrition.
4. Which of the following interventions is a primary focus of the WIC (Women, Infants, and
Children) public health program?
A. Providing long-term health insurance for elderly citizens
B. Supplying free medications for chronic diseases in adults
C. Providing nutrition education and vouchers for specific healthy foods to low-income
pregnant women
D. Managing community gardens for urban food deserts
Correct Answer: C
Expert Explanation: The WIC program is designed to provide federal assistance for
healthcare and nutrition to low-income pregnant and postpartum women. It also serves
infants and children up to age five who are at nutritional risk. Program participants receive
vouchers for specific nutrient-dense foods like eggs, milk, and iron-fortified cereals.
Education on breastfeeding and healthy eating habits is a core component of the
intervention strategy. Studies have shown that WIC participation improves birth outcomes
and reduces the incidence of iron-deficiency anemia in children.
5. An 80-year-old male is experiencing unintentional weight loss and muscle wasting. Which
condition describes this age-related loss of muscle mass?
A. Osteoporosis
B. Dysphagia
C. Atrophic Gastritis
D. Sarcopenia
, Correct Answer: D
Expert Explanation: Sarcopenia is the medical term for the progressive loss of skeletal
muscle mass and strength that occurs with aging. It can lead to increased frailty, falls, and a
loss of independence in the elderly population. While osteoporosis refers specifically to
bone density loss, sarcopenia focuses on the muscular system. Prevention and management
involve adequate protein intake and regular resistance exercise to stimulate muscle protein
synthesis. Identifying sarcopenia early allows for nutritional interventions that can
improve the quality of life for aging adults.
6. Why are elderly individuals at a higher risk for Vitamin B12 deficiency compared to
younger adults?
A. Elderly people generally consume less meat and dairy than younger people
B. Age-related increases in stomach acid destroy the vitamin before absorption
C. The kidneys of older adults excrete Vitamin B12 more rapidly
D. Decreased production of intrinsic factor and hydrochloric acid in the stomach
Correct Answer: D
Expert Explanation: Vitamin B12 requires hydrochloric acid to be released from food
proteins and intrinsic factor for absorption in the small intestine. Many older adults
develop atrophic gastritis, which reduces the secretion of these essential gastric
components. Without sufficient stomach acid and intrinsic factor, B12 absorption becomes
significantly impaired even if dietary intake is adequate. This deficiency can lead to
pernicious anemia and irreversible neurological damage if not addressed. Supplementation
or B12 injections are often necessary for seniors who cannot absorb the vitamin through
traditional food sources.
7. A pediatrician notices that a toddler’s growth chart shows a drop from the 50th percentile
to the 5th percentile for weight-for-age over 3 months. What is the most appropriate initial
assessment?
A. Assume the child has a genetic predisposition to being small
B. Immediately start the child on a high-calorie adult protein shake
C. Screen the child for potential ‘Failure to Thrive’ (FTT) and nutritional intake
D. Advise the parents to stop all physical activity for the child
Correct Answer: C
Expert Explanation: A significant drop across two or more percentile lines on a growth
chart is a clinical red flag for Failure to Thrive. This condition can be caused by medical
issues, environmental stressors, or inadequate caloric intake. Early screening is essential to
identify whether the cause is organic, such as a malabsorption disorder, or non-organic,
such as poverty. Simply assuming it is genetic ignores a potentially dangerous downward
and Latest Questions and Correct Answers with
Rationale - Portage Learning
1. A 26-year-old woman in her first trimester of pregnancy is discussing her nutritional needs
with her doctor. To prevent neural tube defects, which nutrient is most critical for her to
supplement?
A. Vitamin C
B. Vitamin B12
C. Calcium
D. Folic Acid
Correct Answer: D
Expert Explanation: Folic acid is essential for DNA synthesis and the proper closure of the
neural tube during early embryonic development. Insufficient intake significantly increases
the risk of defects like spina bifida and anencephaly. While Vitamin C supports immune
function, it does not play a role in structural neural tube formation. Public health guidelines
recommend that all women of childbearing age consume 400-600 micrograms daily to
ensure protection during the earliest stages of pregnancy. Many cereal products are now
fortified with folate to help meet this requirement across the population.
2. A woman with a pre-pregnancy Body Mass Index (BMI) of 22.0 is asking about her target
weight gain by the end of her pregnancy. According to clinical guidelines, what is the
recommended range?
A. 11 to 20 pounds
B. 25 to 35 pounds
C. 15 to 25 pounds
D. 28 to 40 pounds
Correct Answer: B
Expert Explanation: For a woman with a normal pre-pregnancy BMI between 18.5 and
24.9, the recommended weight gain is 25 to 35 pounds. This range provides the necessary
nutrients for the fetus while minimizing the risk of birth complications. Gaining too little
weight increases the risk of having a low-birth-weight infant who may face developmental
challenges. Gaining excessive weight can increase the risk of gestational diabetes and
difficult deliveries. Monitoring weight throughout all trimesters is a standard part of
prenatal care to ensure maternal and fetal health.
,3. An infant is 4 months old and the parents are considering starting solid foods. What is the
most important physical milestone that must be achieved before introducing solids?
A. The infant can sit up entirely unassisted for one hour
B. The disappearance of the extrusion reflex
C. The appearance of the first primary tooth
D. The infant is able to hold a spoon independently
Correct Answer: B
Expert Explanation: The extrusion reflex is a natural mechanism where infants push food
out of their mouths with their tongues to prevent choking. This reflex typically fades
between 4 and 6 months of age, signaling physical readiness for spoon-feeding. Introducing
solids before this reflex disappears can lead to frustration for the caregiver and potential
safety risks for the baby. Sitting up with support is another key sign, but the reflex
disappearance is more specific to swallowing mechanics. Solid food introduction should be
gradual and should not replace breast milk or formula as the primary source of nutrition.
4. Which of the following interventions is a primary focus of the WIC (Women, Infants, and
Children) public health program?
A. Providing long-term health insurance for elderly citizens
B. Supplying free medications for chronic diseases in adults
C. Providing nutrition education and vouchers for specific healthy foods to low-income
pregnant women
D. Managing community gardens for urban food deserts
Correct Answer: C
Expert Explanation: The WIC program is designed to provide federal assistance for
healthcare and nutrition to low-income pregnant and postpartum women. It also serves
infants and children up to age five who are at nutritional risk. Program participants receive
vouchers for specific nutrient-dense foods like eggs, milk, and iron-fortified cereals.
Education on breastfeeding and healthy eating habits is a core component of the
intervention strategy. Studies have shown that WIC participation improves birth outcomes
and reduces the incidence of iron-deficiency anemia in children.
5. An 80-year-old male is experiencing unintentional weight loss and muscle wasting. Which
condition describes this age-related loss of muscle mass?
A. Osteoporosis
B. Dysphagia
C. Atrophic Gastritis
D. Sarcopenia
, Correct Answer: D
Expert Explanation: Sarcopenia is the medical term for the progressive loss of skeletal
muscle mass and strength that occurs with aging. It can lead to increased frailty, falls, and a
loss of independence in the elderly population. While osteoporosis refers specifically to
bone density loss, sarcopenia focuses on the muscular system. Prevention and management
involve adequate protein intake and regular resistance exercise to stimulate muscle protein
synthesis. Identifying sarcopenia early allows for nutritional interventions that can
improve the quality of life for aging adults.
6. Why are elderly individuals at a higher risk for Vitamin B12 deficiency compared to
younger adults?
A. Elderly people generally consume less meat and dairy than younger people
B. Age-related increases in stomach acid destroy the vitamin before absorption
C. The kidneys of older adults excrete Vitamin B12 more rapidly
D. Decreased production of intrinsic factor and hydrochloric acid in the stomach
Correct Answer: D
Expert Explanation: Vitamin B12 requires hydrochloric acid to be released from food
proteins and intrinsic factor for absorption in the small intestine. Many older adults
develop atrophic gastritis, which reduces the secretion of these essential gastric
components. Without sufficient stomach acid and intrinsic factor, B12 absorption becomes
significantly impaired even if dietary intake is adequate. This deficiency can lead to
pernicious anemia and irreversible neurological damage if not addressed. Supplementation
or B12 injections are often necessary for seniors who cannot absorb the vitamin through
traditional food sources.
7. A pediatrician notices that a toddler’s growth chart shows a drop from the 50th percentile
to the 5th percentile for weight-for-age over 3 months. What is the most appropriate initial
assessment?
A. Assume the child has a genetic predisposition to being small
B. Immediately start the child on a high-calorie adult protein shake
C. Screen the child for potential ‘Failure to Thrive’ (FTT) and nutritional intake
D. Advise the parents to stop all physical activity for the child
Correct Answer: C
Expert Explanation: A significant drop across two or more percentile lines on a growth
chart is a clinical red flag for Failure to Thrive. This condition can be caused by medical
issues, environmental stressors, or inadequate caloric intake. Early screening is essential to
identify whether the cause is organic, such as a malabsorption disorder, or non-organic,
such as poverty. Simply assuming it is genetic ignores a potentially dangerous downward
