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

Which of the following is NOT a type of malnutrition?

  1. Undernutrition

  2. Overnutrition

  3. Micronutrient deficiency

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

Obesity is not a type of malnutrition, as it is a condition in which a person has too much body fat.

Multiple choice

Which theory suggests that aging is a result of the accumulation of cellular damage over time?

  1. Wear-and-Tear Theory

  2. Free Radical Theory

  3. Programmed Aging Theory

  4. Telomere Shortening Theory
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The Wear-and-Tear Theory proposes that aging is caused by the gradual deterioration of cells and tissues due to everyday wear and tear.

Multiple choice

Which nutrient deficiency is characterized by impaired vision, particularly in dim light?

  1. Vitamin A

  2. Vitamin B12

  3. Iron

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

Vitamin A deficiency can lead to impaired vision, especially in dim light, due to its role in the production of rhodopsin, a protein essential for low-light vision.

Multiple choice

What is the primary cause of iron deficiency anemia?

  1. Insufficient dietary iron

  2. Poor absorption of iron

  3. Increased iron loss

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Iron deficiency anemia can be caused by insufficient dietary iron, poor absorption of iron (e.g., due to certain medical conditions), or increased iron loss (e.g., through heavy menstrual bleeding).

Multiple choice

What is the most common cause of vitamin B12 deficiency?

  1. Inadequate dietary intake

  2. Poor absorption of vitamin B12

  3. Increased vitamin B12 requirements

  4. All of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Vitamin B12 deficiency is primarily caused by poor absorption of the vitamin, often due to a lack of intrinsic factor, a protein produced by the stomach that aids in vitamin B12 absorption.

Multiple choice

Which nutrient deficiency can lead to the development of pellagra, characterized by dermatitis, diarrhea, and dementia?

  1. Niacin

  2. Thiamin

  3. Riboflavin

  4. Vitamin B6
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Niacin deficiency, also known as pellagra, can cause a range of symptoms, including dermatitis, diarrhea, and dementia, due to its role in various metabolic processes.

Multiple choice

Which nutrient deficiency can lead to the development of scurvy, characterized by bleeding gums, skin problems, and impaired wound healing?

  1. Vitamin C

  2. Vitamin K

  3. Vitamin E

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

Vitamin C deficiency, also known as scurvy, can cause various symptoms, including bleeding gums, skin problems, and impaired wound healing, due to its role in collagen synthesis.

Multiple choice

What is the primary cause of zinc deficiency?

  1. Insufficient dietary zinc

  2. Poor absorption of zinc

  3. Increased zinc loss

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Zinc deficiency can be caused by insufficient dietary zinc, poor absorption of zinc (e.g., due to certain medical conditions), or increased zinc loss (e.g., through diarrhea or excessive sweating).

Multiple choice

Which nutrient deficiency can lead to the development of beriberi, characterized by neurological and cardiovascular symptoms?

  1. Thiamin

  2. Riboflavin

  3. Niacin

  4. Vitamin B6
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Thiamin deficiency, also known as beriberi, can cause a range of symptoms, including neurological and cardiovascular problems, due to its role in energy metabolism.

Multiple choice

Which nutrient deficiency can lead to the development of night blindness, characterized by impaired vision in dim light?

  1. Vitamin A

  2. Vitamin B12

  3. Iron

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

Vitamin A deficiency can lead to night blindness, as it is essential for the production of rhodopsin, a protein necessary for low-light vision.

Multiple choice

What is the primary cause of iodine deficiency?

  1. Insufficient dietary iodine

  2. Poor absorption of iodine

  3. Increased iodine loss

  4. All of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Iodine deficiency is primarily caused by insufficient dietary iodine intake, as the body cannot produce iodine on its own.

Multiple choice

Which nutrient deficiency can lead to the development of anemia, characterized by fatigue, weakness, and shortness of breath?

  1. Iron

  2. Vitamin B12

  3. Folic acid

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Anemia can be caused by deficiencies in iron, vitamin B12, or folic acid, as these nutrients are essential for the production of red blood cells.

Multiple choice

Which nutrient deficiency can lead to the development of rickets, characterized by soft and weak bones in children?

  1. Vitamin D

  2. Calcium

  3. Phosphorus

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Rickets can be caused by deficiencies in vitamin D, calcium, or phosphorus, as these nutrients are essential for bone mineralization.

Multiple choice

Which of the following is a symptom of vitamin C deficiency?

  1. Scurvy

  2. Night blindness

  3. Rickets

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

Scurvy is a disease caused by vitamin C deficiency. Symptoms of scurvy include bleeding gums, impaired wound healing, and skin problems.

Multiple choice

Which of the following is a common type of nutritional disorder that can occur in animals due to a deficiency of a specific nutrient?

  1. Rickets

  2. Scurvy

  3. Night Blindness

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

Rickets, scurvy, night blindness, and pica are all common types of nutritional disorders that can occur in animals due to a deficiency of a specific nutrient.