Biology

Deficiency Diseases and Disorders

722 Questions

Deficiency diseases and disorders are caused by a lack of essential nutrients, vitamins, and minerals in the diet or environment. This includes conditions like anemia, goitre, and night blindness. Practice these questions to prepare for general science exams.

Vitamin deficiency symptomsMineral deficiency disordersMalnutrition conceptsHormonal and specific diseases

Deficiency Diseases and Disorders Questions

Multiple choice

The morphological changes that are indicative of element deficiency are called deficiency symptoms. The deficiency symptoms of which of the following elements are visible first in the senescent leaves?

a. Manganese b. Iron c. Potassium d. Magnesium

  1. Only a and b

  2. Only a and c

  3. Only a and d

  4. Only c and d

  5. Only b and d
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

This is the correct option. The deficiency symptoms of potassium and magnesium are visible first in the senescent leaves.

Multiple choice

Which of the following diseases is a protein deficiency disease?

  1. Eczema

  2. Night-blindness

  3. Kwashiorkor

  4. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Kwashiorkor is a severe form of malnutrition caused specifically by protein deficiency, characterized by edema, liver enlargement, and skin/hair changes. It typically occurs when children are weaned from protein-rich breast milk to protein-poor diets. Eczema is inflammatory, night blindness is Vitamin A deficiency, and marasmus (not listed) is calorie deficiency.

Multiple choice

Which one of the following symptoms of nutritional deficiency disorders is specific to the deficiency of vitamin C?

  1. Cracks on lips

  2. Spongy bleeding gums

  3. Pale conjunctivae

  4. Rashes on skin
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Vitamin C deficiency (scurvy) specifically causes spongy, bleeding gums due to impaired collagen synthesis. Cracks on lips suggest B-vitamin deficiency, pale conjunctivae indicates anemia/iron deficiency, and skin rashes are associated with various deficiencies but not specific to Vitamin C.

Multiple choice

Dehydration in human body is caused by the loss of

  1. salts

  2. vitamins

  3. hormones

  4. water
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Dehydration is the excessive loss of body water, disrupting normal physiological functions. While electrolytes (salts) are often lost along with water in sweat or diarrhea, the definition of dehydration is water loss itself. Vitamins and hormones are not directly involved.

Multiple choice

The disease beriberi is caused by deficiency of vitamin

  1. B1

  2. B2

  3. C

  4. D
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Beriberi is caused by thiamine (vitamin B1) deficiency. It affects the nervous and cardiovascular systems, causing weakness, nerve damage, and heart failure. B2 deficiency causes Ariboflavinosis, C deficiency causes scurvy, and D deficiency causes rickets/osteomalacia.