Biology

Deficiency Diseases and Disorders

706 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

Phenylketonuria is caused due to the deficiency of

  1. phenylalanine hydroxylase

  2. dihydropteridine reductase

  3. homogentisic acid oxidase

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

Phenylketonuria (PKU) is an inherited metabolic disorder caused by a deficiency of the enzyme phenylalanine hydroxylase, which is required to convert phenylalanine to tyrosine.

Multiple choice

Following are vitamins in column I and deficiency diseases in column II. ||| |---|---| | i) K | A) Beri-beri | | ii) D | (B) Hemorrhagic disease of new born | | iii) B1 | (C) Keratomalacia | | iv) A | (D) Rickets |

  1. (i) - (C), (ii) - (B), (iii) - (D), (iv) - (A)

  2. (i) - (A), (ii) - (B), (iii) -(D), (iv) - (C)

  3. (i) - (B), (ii) - (D), (iii) - (A), (iv) - (C)

  4. (i) - (C), (ii) - (D), (iii) - (A), (iv) - (B)
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

(i) - (B), (ii) - (D), (iii) - (A), (iv) - (C) is the correct answer.

Multiple choice

Which of the following is an autoimmune disease?

  1. Cholera

  2. Rheumatic fever

  3. Typhoid fever

  4. Malaria
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Rheumatic fever is an autoimmune disease resulting from an abnormal immune response to a streptococcal infection. Cholera, Typhoid, and Malaria are infectious diseases caused by pathogens.

Multiple choice

Chlorosis occurs due to

  1. deficiency of light

  2. deficiency of Mg and Fe

  3. deficiency of pigments in the plant

  4. increased illumination
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Chlorosis is the yellowing of leaf tissue due to a lack of chlorophyll, often caused by a deficiency of magnesium (a central component of chlorophyll) or iron (required for its synthesis).

Multiple choice

Fe-deficiency causes

  1. necrosis of old leaves

  2. interveinal chlorosis of young leaves

  3. dwarfness

  4. defoliation
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Iron is essential for chlorophyll synthesis. Since iron is relatively immobile in plants, its deficiency symptoms, such as interveinal chlorosis, appear first in young leaves.

Multiple choice

Which of the following is an enzyme defficiency disease?

  1. Albinism

  2. Goitre

  3. Kwashiorkor

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

Albinism is caused due to the deficiency of enzyme tyrosinase. People with albinism always have problems with vision (not correctable with eyeglasses) and many have low vision. The degree of vision impairment varies with the different types of albinism

Multiple choice

Protein deficiency causes

  1. kwashiorkor and pellagra

  2. kwashiorkor and rickets

  3. kwashiorkor and marasmus

  4. marasmus and osteomalacea
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Kwashiorkor is caused by severe protein deficiency, while marasmus is caused by a severe deficiency of both protein and total calories.