Biology ยท 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

What is the role of diacylglycerol in lipogenesis?

  1. It is a substrate for triacylglycerol acyltransferase

  2. It is a cofactor for acetyl-CoA carboxylase

  3. It is an inhibitor of fatty acid synthase

  4. It is a product of fatty acid synthase
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Diacylglycerol is a substrate for triacylglycerol acyltransferase and is used to form a triacylglycerol.

Multiple choice

Which enzyme catalyzes the transfer of a fatty acid from acyl-CoA to diacylglycerol?

  1. Acetyl-CoA carboxylase

  2. Fatty acid synthase

  3. Glycerol-3-phosphate acyltransferase

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

Triacylglycerol acyltransferase catalyzes the transfer of a fatty acid from acyl-CoA to diacylglycerol, forming a triacylglycerol.

Multiple choice

What is the role of triacylglycerol in lipogenesis?

  1. It is a storage form of fatty acids

  2. It is a cofactor for acetyl-CoA carboxylase

  3. It is an inhibitor of fatty acid synthase

  4. It is a product of fatty acid synthase
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Triacylglycerol is a storage form of fatty acids and is the final product of lipogenesis.

Multiple choice

Where does lipogenesis primarily occur in the body?

  1. Adipose tissue

  2. Liver

  3. Muscle

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

Lipogenesis primarily occurs in adipose tissue, where fatty acids are stored as triacylglycerols.

Multiple choice

Which type of fat is considered healthy and beneficial for heart health?

  1. Saturated fat

  2. Trans fat

  3. Monounsaturated fat

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

Monounsaturated and polyunsaturated fats are considered healthy fats, as they can help lower cholesterol levels and reduce the risk of heart disease.