Biology · Chemistry

Lipids, Fats, and Biochemistry

1,009 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

In the human body, fats are stored in

  1. epithelial cells

  2. adipose tissue

  3. epidermis

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

In the human body, fats are stored in adipose tissue. Its main role is to store energy in the form of lipids, although it also cushions and insulates the body.

Multiple choice

Plasma membrane is made up of

  1. lipids

  2. proteins

  3. cellulose

  4. Both 1 and 2
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Plasma membrane is flexible and is made up of organic molecules called lipids and proteins.

Multiple choice

Rheumatic heart patients are specially advised against taking

  1. carbohydrates

  2. proteins

  3. salt

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

Rheumatic heart disease is a complication of rheumatic fever in which the heart valves are damaged. Rheumatic fever is an inflammatory disease that begins with strep throat. It can affect connective tissue throughout the body, especially in the heart, joints, brain and skin. Although rheumatic fever can strike people of all ages, it is most common in children between 5 and 15 years old. Rheumatic heart patients are specially advised against taking salt. 

Multiple choice

Cholesterol is a

  1. fatty alcohol found in animal fats

  2. type of chlorophyll

  3. derivative of chloroform

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

Cholesterol, a type of lipid, is found in foods from animal sources. This means that eggs, meats, and whole-fat dairy products (including milk, cheese, and ice cream) are loaded with cholesterol — and vegetables, fruits, and grains contain none.

Multiple choice

Immunoglobulins have been named so because they are basically

  1. protein globulin

  2. fat globules

  3. oil globules

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

Immunoglobulins are proteins that belong to the globulin class of serum proteins. They are named for their structural classification as globular proteins involved in immune responses.

Multiple choice

Which of the following elicits strong immune responses in animals?

  1. Lipopolysaccharides

  2. Saccharolipids

  3. Polyketides

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

Lipopolysaccharides (LPS), also known as lipoglycans, are large molecules consisting of a lipid and a polysaccharide joined by a covalent bond; they are found in the outer membrane of gram-negative bacteria, act as endotoxins and elicit strong immune responses in animals.