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
  1. zinc

  2. manganese

  3. boron

  4. copper

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Zinc deficiency causes exanthema (also known as mottle leaf) in citrus plants. Symptoms include yellowish mottling between leaf veins, small narrow leaves, stunted growth, and reduced fruit size. Zinc is essential for several enzyme systems including carbonic anhydrase and alcohol dehydrogenase. Manganese deficiency causes different symptoms (interveinal chlorosis), boron deficiency causes corking and cracking, and copper deficiency causes wilting and dieback.

Multiple choice
  1. bending of leaf tip

  2. chlorosis of leaves

  3. mottling and necrosis of leaves

  4. poor development of vasculature

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

 Deficiency of molybdenum causes mottling and necrosis of leaves.

Multiple choice
  1. Loss of weight

  2. Inability to adapt to increased food intake.

  3. Loss of memory

  4. Depletion of bones

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Cachexia is a complex metabolic syndrome associated with underlying illness (especially cancer, AIDS, and other chronic conditions) characterized by loss of muscle with or without loss of fat mass. While weight loss is a key feature, cachexia is more than just simple starvation or weight loss.

Multiple choice
  1. Loss of weight

  2. Inability to adapt to increased food intake.

  3. Loss of memory

  4. Depletion of bones

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Cachexia is a complex metabolic syndrome associated with underlying illness, characterized by loss of muscle with or without loss of fat mass. While it involves inability to properly utilize nutrients, the most visible and defining characteristic is significant weight loss and muscle wasting.

Multiple choice
  1. Vitamin - A

  2. Iodine

  3. Potassium

  4. Vitamin - C

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Hypokalemia is the medical term for low potassium levels in the blood. Potassium is an essential electrolyte that helps regulate nerve signals, muscle contractions, and heart rhythm. The prefix 'hypo-' means deficient or low, and '-kal' refers to potassium (chemical symbol K).

Multiple choice
  1. Cholera

  2. Beriberi

  3. Kwashiorkor

  4. Kala-azar

  5. Diphtheria

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Kwashiorkor is a form of malnutrition that occurs when there is not enough protein in the diet.

Multiple choice
  1. premature leaf fall

  2. chlorosis of leaves

  3. necrosis of stem

  4. chlorosis in veins

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Nitrogen deficiency causes chlorosis - the yellowing of leaves due to insufficient chlorophyll production. Nitrogen is a crucial component of chlorophyll molecules and amino acids.

Multiple choice
  1. rickets

  2. scurvy

  3. beri - beri

  4. anaemia

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Vitamin B6 (pyridoxine) deficiency causes microcytic hypochromic anemia because B6 is essential for hemoglobin synthesis. Rickets is caused by Vitamin D deficiency. Scurvy results from Vitamin C deficiency. Beri-beri is caused by Vitamin B1 (thiamine) deficiency.

Multiple choice
  1. Beri - Beri

  2. Scurvy

  3. Night blindness

  4. Rickets

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Vitamin A deficiency causes night blindness (nyctalopia) because retinol is essential for producing rhodopsin, the pigment needed for low-light vision. Severe deficiency can lead to complete blindness and increase susceptibility to infections. Beri-beri is thiamine (B1) deficiency, scurvy is vitamin C deficiency, and rickets is vitamin D deficiency.

Multiple choice
  1. balanced diet

  2. only carbohydrates

  3. only protein

  4. only starch

  5. only vitamins

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A balanced diet is required to avoid deficiency diseases. Vitamins and minerals are important for a healthy lifestyle.