Consider statements about human nutrition: 1. A balanced diet provides all essential nutrients. 2. Malnutrition only refers to undernutrition. 3. Water is essential for life. Which are correct? MCQ with Answer and Explanation

Question

Consider statements about human nutrition: 1. A balanced diet provides all essential nutrients. 2. Malnutrition only refers to undernutrition. 3. Water is essential for life. Which are correct?

A. 1 and 3 only

B. 1 and 2 only

C. 2 and 3 only

D. 1, 2 and 3

Answer: Option A

Solution (By JKExamLibrary)

A balanced diet contains all the essential macronutrients (carbohydrates, proteins, fats) and micronutrients (vitamins, minerals) in the correct proportions required for optimal health, growth, and maintenance. Malnutrition is a broad term that refers to deficiencies, excesses, or imbalances in a person's intake of energy and/or nutrients; it includes both undernutrition (wasting, stunting) and overnutrition (overweight, obesity). Water is an essential nutrient, crucial for hydration, transport, and all biochemical reactions. Thus, statements 1 and 3 are correct.

This question belongs to: Science Biology

Request complete Subject PDF

Discuss this Question (0)

No comments yet. Be the first to start the discussion!

Practice More Biology Questions

Question #1

Share Report

The antibiotic that inhibits bacterial cell wall synthesis is:

A. Tetracycline

B. Streptomycin

C. Chloramphenicol

D. Penicillin

View Answer & Solution Discuss

Get Complete Subject PDF for Science

Correct Answer: Option D

Explanation:
Penicillin and other beta-lactam antibiotics (cephalosporins, carbapenems) inhibit the transpeptidase enzyme involved in cross-linking peptidoglycan, weakening the cell wall and causing bacterial lysis. Tetracycline and streptomycin inhibit protein synthesis by acting on ribosomes. Chloramphenicol also inhibits protein synthesis. Penicillin is most effective against actively dividing gram-positive bacteria.

This question belongs to: Science Biology

Question #2

Share Report

Assertion (A): The process of breathing is also called pulmonary ventilation.
Reason (R): It involves the movement of air into and out of the lungs.

A. Both A and R are true, but R is not the correct explanation.

B. A true, R false.

C. Both A and R are true, and R is the correct explanation.

D. A false, R true.

View Answer & Solution Discuss

Get Complete Subject PDF for Science

Correct Answer: Option C

Explanation:
Pulmonary ventilation is the mechanical process of moving air in (inspiration) and out (expiration), which is breathing. R correctly defines it.

This question belongs to: Science Biology

Question #3

Share Report

Crossing over between homologous chromosomes occurs during which sub-stage of Prophase I in meiosis?

A. Pachytene

B. Diplotene

C. Leptotene

D. Zygotene

View Answer & Solution Discuss

Get Complete Subject PDF for Science

Correct Answer: Option A

Explanation:
Prophase I of meiosis is divided into five sub-stages: leptotene, zygotene, pachytene, diplotene, and diakinesis. Crossing over, the exchange of genetic material between non-sister chromatids of homologous chromosomes, occurs specifically during the pachytene stage at structures called recombination nodules.

This question belongs to: Science Biology

Explore All Biology MCQs