Biology · Chemistry

Lipids, Fats, and Biochemistry

1,130 Questions

Lipids, fats, and biochemistry explore the structure and function of biological molecules. This includes fatty acids, cholesterol, trans-fats, and cellular membranes. Questions on this topic frequently appear in science sections of competitive government exams.

Types of fats and lipidsCholesterol and human bodyFatty acidsCellular membranes

Lipids, Fats, and Biochemistry Questions

Multiple choice
  1. Glucose

  2. Gelatine

  3. Galactose

  4. Glycerol

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

Triglycerides, which make up most dietary fats, consist of three fatty acid molecules bound to a single backbone molecule of glycerol. Glucose and galactose are simple sugars, while gelatine is a protein derived from collagen.

Multiple choice
  1. True

  2. False

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

Oily fish such as salmon, mackerel, and sardines are excellent sources of omega-3 fatty acids, which are essential fatty acids. Since the human body cannot produce these fats on its own, they must be obtained through our diet.

Multiple choice
  1. True

  2. False

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

Fat is classified as a macronutrient because the body requires it in relatively large quantities to provide energy and support cellular functions. Micronutrients, on the other hand, are vitamins and minerals that the body needs only in very small amounts.

Multiple choice
  1. lipid

  2. globular protein

  3. fibrous protein

  4. carbohydrate

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

Collagen is the most abundant protein in the animal kingdom and is a fibrous structural protein. It provides strength and structural support to various connective tissues like skin, tendons, and ligaments.

Multiple choice
  1. Fats

  2. Protein

  3. Ration

  4. Concentrate

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

Fats are organic molecules that serve as a concentrated energy source and are stored as oily or greasy substances in animal bodies. Unlike proteins or rations, fats are primarily composed of lipids.

Multiple choice
  1. To assist wool production

  2. To make them ready for culling out

  3. Insulation and energy

  4. To help bone and teeth building

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

Fats are a highly concentrated source of energy, providing more than twice the energy per gram compared to carbohydrates or proteins. Additionally, fat deposits in the body serve as thermal insulation to help regulate body temperature and protect internal organs.

Multiple choice
  1. lipid

  2. oil

  3. fat

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

Fats are saturated lipid compounds that remain solid at room temperature, whereas oils are typically unsaturated lipids that are liquid at room temperature. Both are types of lipids, but fat specifically refers to the solid form.

Multiple choice
  1. Carbs

  2. Lipids

  3. Protiens

  4. Fiber

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

Carbohydrates (carbs) are organic compounds composed of carbon, hydrogen, and oxygen, typically in a 1:2:1 ratio, and serve as a primary energy source in animal feed. While lipids also contain these elements, carbohydrates are the classic feed component defined primarily by this basic structure and role.

Multiple choice
  1. Energy

  2. Stored energy

  3. Fat

  4. Hair & fingernails

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

Carbohydrates are the body's primary and preferred source of quick energy for cellular functions and physical activity.