Nutrition and Health Practice Questions

Q: Which of the following pulses contains the highest amount of protein?

Soyabean. **Explanation:** The correct answer is **Soyabean**. In the context of Community Medicine and Nutrition, pulses are the primary source of vegetable protein, especially in vegetarian diets. **1. Why Soyabean is correct:** Soyabean (*Glycine max*) is unique among pulses because it is a "rich source" of both protein and fat. It contains approximately **40-43% protein**, which is nearly double the protein content found in other common pulses. Furthermore, soy protein is considered a "complete protein" among plant sources as it contains all essential amino acids in sufficient quantities, making its biological value higher than other legumes. **2. Why other options are incorrect:** * **Green gram (Moong dal), Red gram (Arhar/Tur dal), and Black gram (Urad dal):** These are common Indian pulses. While they are excellent sources of protein, their protein content typically ranges between **20% to 25%**. * Green gram: ~24% * Red gram: ~22% * Black gram: ~24% Since 40% (Soyabean) is significantly higher than 24%, these options are incorrect. **3. High-Yield Clinical Pearls for NEET-PG:** * **Limiting Amino Acid:** Most pulses (including those in the options) are deficient in **Methionine** but rich in **Lysine**. Conversely, cereals are deficient in Lysine but rich in Methionine. This is the basis for **"Mutual Supplementation"** (e.g., Khichdi), which improves the Net Protein Utilization (NPU). * **Reference Protein:** Egg is considered the reference protein (Biological Value = 100). * **Pulse Protein Content:** Average pulses provide 20-25g of protein per 100g, while Soyabean provides 40-43g. * **Antinutritional Factors:** Pulses often contain phytates and lectins; Soyabean specifically contains **Trypsin inhibitors**, which are inactivated by thorough cooking (heat).

Q: What is the recommended daily calorie intake during late pregnancy?

2300 calories. ### Explanation **1. Understanding the Correct Answer (B: 2300 calories)** The nutritional requirements in pregnancy are calculated by adding a specific "extra allowance" to the woman’s pre-pregnancy sedentary requirements. According to the **ICMR-NIN (2020) guidelines**: * The Estimated Average Requirement (EAR) for a **sedentary woman** is **1660 kcal/day**. * The additional calorie requirement for pregnancy is **+350 kcal/day** (in the 2nd trimester) and **+600 kcal/day** (in the 3rd trimester). * Therefore, in late pregnancy (3rd trimester), the total requirement is approximately **1660 + 600 = 2260 kcal/day**, which rounds to the nearest option of **2300 calories**. **2. Analysis of Incorrect Options** * **A (2800 calories):** This is excessively high for a sedentary pregnant woman and may lead to gestational obesity or macrosomia. However, this might be appropriate for a woman performing *heavy* physical labor. * **C (1500 calories):** This is below the baseline requirement for a non-pregnant sedentary woman (1660 kcal). Such low intake leads to Intrauterine Growth Restriction (IUGR). * **D (3000 calories):** This far exceeds the physiological needs of pregnancy and is not supported by standard nutritional guidelines. **3. High-Yield Clinical Pearls for NEET-PG** * **Protein Requirement:** The additional protein allowance in the 3rd trimester is **+22.0 g/day** (Total ≈ 68 g/day). * **Iron:** Requirement increases to **27 mg/day** during pregnancy. * **Calcium:** The RDA remains **1000 mg/day** (same as non-pregnant adults) according to 2020 guidelines, as absorption efficiency increases. * **Weight Gain:** Recommended weight gain for a woman with a normal BMI is **10–12 kg**. * **Folic Acid:** 400 μg/day is recommended to prevent Neural Tube Defects (NTDs), ideally starting periconceptionally.

Q: Amongst the following fats and oils, which has the highest proportion of polyunsaturated fatty acids (PUFA)?

Safflower oil. **Explanation:** The correct answer is **Safflower oil**. The classification of dietary fats is based on the predominance of fatty acid chains: Saturated (SFA), Monounsaturated (MUFA), and Polyunsaturated (PUFA). PUFAs are essential fatty acids (like Linoleic acid) that the body cannot synthesize. **Why Safflower Oil is Correct:** Safflower oil contains the highest concentration of PUFA among common edible oils, approximately **73-75%**. It is primarily composed of Linoleic acid (n-6). In the context of NEET-PG, it is often compared with Sunflower oil (approx. 60-65% PUFA) and Soyabean oil (approx. 60% PUFA). **Analysis of Incorrect Options:** * **Coconut oil:** This is the richest source of **Saturated Fatty Acids (SFA)**, containing about 92%. It is unique because it is high in Medium Chain Triglycerides (MCTs). * **Butter:** An animal fat high in **Saturated Fatty Acids** and cholesterol. It contains roughly 60-65% SFA and very low PUFA (approx. 2-4%). * **Groundnut oil:** This is a balanced oil but is primarily known for being rich in **Monounsaturated Fatty Acids (MUFA)**, specifically Oleic acid. It contains about 40-50% MUFA and only 30% PUFA. **High-Yield Clinical Pearls for NEET-PG:** * **Highest PUFA:** Safflower oil (~75%). * **Highest MUFA:** Olive oil (~75%), followed by Groundnut oil. * **Highest SFA:** Coconut oil (~92%). * **P/S Ratio:** The recommended Polyunsaturated to Saturated fat ratio for a healthy diet is **0.8 – 1.0**. * **Essential Fatty Acids:** Linoleic acid (n-6) and Linolenic acid (n-3) are the two primary PUFAs required in the diet to prevent deficiency syndromes like Phrynoderma (Toad skin).

Q: Which type of milk among the following has the lowest protein content?

Human milk. **Explanation:** The protein content in milk is inversely proportional to the growth rate of the species. Human infants have a relatively slow growth rate compared to calves or kids (goats), necessitating a lower concentration of protein to prevent solute overload on their immature kidneys. **1. Why Human Milk is Correct:** Human milk contains the lowest protein concentration among the listed options, approximately **1.1 g/100 ml**. Crucially, the quality of this protein is superior; it has a **Whey-to-Casein ratio of 60:40**, making it easily digestible. The predominant protein is alpha-lactalbumin, whereas animal milks are dominated by casein. **2. Analysis of Incorrect Options:** * **Cow Milk (3.2 - 3.3 g/100 ml):** Contains nearly three times the protein of human milk. It is high in casein (80%), which forms hard curds in the infant's stomach. * **Goat Milk (3.3 - 3.5 g/100 ml):** Similar protein levels to cow milk. While its fat globules are smaller (easier to digest), its protein content remains significantly higher than human milk. * **Buffalo Milk (3.6 - 4.3 g/100 ml):** Contains the highest protein and calorie content among the common domestic sources, making it the most concentrated option listed. **High-Yield Clinical Pearls for NEET-PG:** * **Protein Content Comparison:** Human (1.1) < Cow (3.2) < Goat (3.3) < Buffalo (4.0) g/100ml. * **Carbohydrate Fact:** Human milk has the **highest lactose content** (7 g/100 ml) compared to animal milks, providing essential energy for brain development. * **Mineral Content:** Human milk is low in sodium and calcium compared to cow milk, protecting the infant's **renal solute load**. * **Iron:** Although both human and cow milk are low in iron, the **bioavailability** of iron in human milk is much higher (50% vs 10%).

Q: All of the following are used to assess the mid-upper arm circumference except?

Harpenden calliper. Mid-upper arm circumference (MUAC) is a vital anthropometric tool used primarily to screen for protein-energy malnutrition (PEM) in children aged 6 to 59 months. It reflects the status of muscle mass and subcutaneous fat. **Explanation of the Correct Answer:** * **D. Harpenden Calliper:** This is the correct answer because it is used to measure **skinfold thickness** (specifically at the triceps or subscapular sites) to estimate body fat percentage, not the circumference of the arm. While it assesses nutritional status, it measures thickness via skin pinching rather than girth. **Explanation of Incorrect Options:** * **A. Bangle Test:** A traditional screening method where a fiberglass or plastic ring (bangle) with a diameter of **4 cm** is used. If the bangle passes easily above the elbow, it indicates a MUAC of less than 12.5 cm, suggesting malnutrition. * **B. Shakir Tape Method:** The most common field tool. It is a non-stretchable tape color-coded for quick assessment: **Green** (>13.5 cm: Normal), **Yellow** (12.5–13.5 cm: At risk/Borderline), and **Red** (<12.5 cm: Severe Malnutrition). * **C. Quac Stick:** Also known as the "Quaker Arm Circumference" stick. It correlates MUAC with the child's **height** rather than age, making it useful in areas where birth dates are unknown. **High-Yield Clinical Pearls for NEET-PG:** * **WHO Cut-offs for MUAC:** Severe Acute Malnutrition (SAM) is defined as MUAC **<11.5 cm**; Moderate Acute Malnutrition (MAM) is **11.5 to 12.5 cm**. * MUAC is considered **age-independent** between 1 and 5 years because the arm circumference remains relatively constant in healthy children during this period. * **Best site for MUAC:** Measured at the midway point between the acromion process (shoulder) and the olecranon process (elbow) of the left arm.

Q: Clinical features presented below are due to deficiency of:

Tryptophan. ***Tryptophan*** - **Tryptophan deficiency** leads to **pellagra**, characterized by the classic **4 D's**: Dermatitis, Diarrhea, Dementia, and Death. - Tryptophan serves as a precursor for **niacin (vitamin B3) synthesis**, and its deficiency results in **niacin deficiency** causing pellagra. *Cysteine* - **Cysteine deficiency** primarily affects **protein synthesis** and **antioxidant production** (glutathione), not causing pellagra symptoms. - Deficiency may lead to **hair and nail problems** or **immune dysfunction**, but not the classic 4 D's. *Glutamine* - **Glutamine deficiency** mainly affects **intestinal barrier function** and **immune cell metabolism**, particularly during stress or illness. - Does not cause **dermatitis**, **dementia**, or the characteristic **pellagra symptoms**. *Phenylalanine* - **Phenylalanine deficiency** is extremely rare and would primarily affect **protein synthesis** and **tyrosine production**. - Does not lead to **pellagra** or the **4 D's** characteristic of niacin/tryptophan deficiency.

Q: Which one of the following cooking oils contains the highest percentage of linoleic acid?

Safflower oil. **Explanation:** The question tests your knowledge of **Essential Fatty Acids (EFA)**, specifically **Linoleic Acid**, which is the primary Omega-6 polyunsaturated fatty acid (PUFA). Linoleic acid is essential because the human body cannot synthesize it; it must be obtained through dietary sources like vegetable oils. **1. Why Safflower Oil is Correct:** Safflower oil contains the highest concentration of linoleic acid among all common edible oils, typically ranging from **73% to 78%**. In community medicine and nutrition, it is considered the gold standard source for Omega-6 PUFA. **2. Analysis of Incorrect Options:** * **Sunflower Oil:** While a rich source of PUFA, its linoleic acid content is approximately **60-65%**, which is lower than safflower oil. * **Corn Oil:** Contains about **55-60%** linoleic acid. It is a good source but ranks below both safflower and sunflower oils. * **Groundnut (Peanut) Oil:** Contains only about **20-30%** linoleic acid. It is primarily rich in Monounsaturated Fatty Acids (MUFA), specifically Oleic acid. **3. High-Yield Clinical Pearls for NEET-PG:** * **PUFA Ranking (Linoleic Acid):** Safflower (75%) > Sunflower (60%) > Corn (55%) > Soya bean (50%) > Groundnut (25%). * **Coconut Oil:** Contains the highest amount of **Saturated Fatty Acids** (~90%) and is the poorest source of PUFA. * **Mustard Oil:** Notable for high **Erucic acid** content; it also contains Alpha-linolenic acid (Omega-3). * **P/S Ratio:** For a healthy diet, the recommended Polyunsaturated to Saturated fat (P/S) ratio is **0.8 to 1.0**. * **Clinical Significance:** High intake of linoleic acid helps lower LDL cholesterol, thereby reducing the risk of Atherosclerotic Cardiovascular Disease (ASCVD).

Q: What is the total recommended amount of iron supplementation during pregnancy?

1000 mg. ### Explanation **1. Why 1000 mg is the Correct Answer:** The total iron requirement during a normal singleton pregnancy is approximately **1000 mg**. This physiological demand is distributed as follows: * **300 mg:** For the fetus and placenta. * **500 mg:** For the expansion of maternal red cell mass (erythropoiesis). * **200 mg:** To cover obligatory losses through the skin, urine, and stools. While the body "saves" about 250–300 mg due to amenorrhea, the net requirement remains significantly higher than pre-pregnancy levels, necessitating supplementation to prevent Iron Deficiency Anemia (IDA). **2. Analysis of Incorrect Options:** * **600 mg (Option A):** This is an underestimate. It barely covers the maternal red cell expansion and obligatory losses, leaving nothing for the fetus. * **800 mg (Option B):** While closer to the net requirement (after accounting for amenorrhea savings), it does not represent the "total" physiological demand of 1000 mg cited in standard textbooks like Park’s PSM and Williams Obstetrics. * **1200 mg (Option D):** This exceeds the standard physiological requirement for a normal pregnancy, though it might be reached in multifetal gestations. **3. High-Yield Clinical Pearls for NEET-PG:** * **IFA Regimen (Anemia Mukt Bharat):** Prophylactic dose is **60 mg elemental iron + 500 mcg Folic Acid** daily for 180 days (starting from the 2nd trimester/14 weeks) and continued for 180 days postpartum. * **Therapeutic Dose:** If a pregnant woman is diagnosed with anemia, the dose is doubled (two tablets daily). * **Iron Absorption:** Best absorbed on an empty stomach with Vitamin C (citrus fruits); inhibited by tea, coffee, and calcium. * **Daily Requirement:** In the second half of pregnancy, the daily requirement jumps to approximately **5–7 mg/day**.

Question 1

Which of the following pulses contains the highest amount of protein?

Accepted Answer

Soyabean

Answer

Green gram

Answer

Red gram

Answer

Black gram

Question 2

Which protein quality indicator was adopted by the Indian Council of Medical Research (ICMR) when recommending dietary protein requirements?

Accepted Answer

Net protein utilization

Answer

Amino acid score

Answer

Biological value

Answer

Protein efficiency ratio

Question 3

What is the recommended daily calorie intake during late pregnancy?

Accepted Answer

2300 calories

Answer

2800 calories

Answer

1500 calories

Answer

3000 calories

Question 4

Amongst the following fats and oils, which has the highest proportion of polyunsaturated fatty acids (PUFA)?

Accepted Answer

Safflower oil

Answer

Groundnut oil

Answer

Coconut oil

Answer

Butter

Question 5

Which of the following statements regarding the refining of oils is NOT TRUE?

Accepted Answer

It increases the unsaturated fatty acid content of the oil.

Answer

Refining is done using steam, alkali, etc.

Answer

It removes free fatty acids and rancid material from oil.

Answer

Refined oils are generally more costly than unrefined oils.

Question 6

Which type of milk among the following has the lowest protein content?

Accepted Answer

Human milk

Answer

Goat milk

Answer

Cow milk

Answer

Buffalo milk

Question 7

All of the following are used to assess the mid-upper arm circumference except?

Accepted Answer

Harpenden calliper

Answer

Bangle test

Answer

Shakir tape method

Answer

Quac stick

Question 8

Clinical features presented below are due to deficiency of:

Accepted Answer

Tryptophan

Answer

Cysteine

Answer

Glutamine

Answer

Phenylalanine

Question 9

Which one of the following cooking oils contains the highest percentage of linoleic acid?

Accepted Answer

Safflower oil

Answer

Sunflower oil

Answer

Corn oil

Answer

Groundnut oil

Question 10

What is the total recommended amount of iron supplementation during pregnancy?

Accepted Answer

1000 mg

Answer

600 mg

Answer

800 mg

Answer

1200 mg

Nutrition and Health — MCQs

Nutrition and Health — MCQs

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