Lipids and their Biological Significance Quiz

Explore the vital roles of lipids in biology. Test your knowledge with Lipidomics Quiz covering functions, types, and biochemical pathways.

#1

Which of the following is a major function of lipids in the body?

Energy storage
Transport of oxygen
Formation of antibodies
Transmission of nerve impulses
#2

Which type of lipid is the primary component of cell membranes?

Triglycerides
Steroids
Phospholipids
Waxes
#3

Which type of fatty acid contains one or more double bonds?

Saturated fatty acids
Unsaturated fatty acids
Trans fatty acids
Hydrogenated fatty acids
#4

What is the primary function of triglycerides in the body?

Structural component of cell membranes
Source of quick energy
Transportation of oxygen
Synthesis of hormones
#5

Which lipid is a key component of myelin sheath, providing insulation to nerve cells?

Cholesterol
Triglycerides
Phospholipids
Waxes
#6

Which type of lipid contains a four-ring structure and includes hormones such as testosterone and estrogen?

Triglycerides
Steroids
Phospholipids
Waxes
#7

Which lipid-soluble vitamin is essential for vision?

Vitamin A
Vitamin C
Vitamin D
Vitamin E
#8

Which of the following lipids are precursors for hormone synthesis?

Cholesterol
Triglycerides
Waxes
Phospholipids
#9

Which lipid is a precursor for bile acids, vitamin D, and steroid hormones?

Cholesterol
Triglycerides
Phospholipids
Waxes
#10

What is the main difference between LDL and HDL cholesterol?

LDL is 'good' cholesterol, while HDL is 'bad' cholesterol.
LDL carries cholesterol away from the cells, while HDL transports it to the cells.
LDL carries cholesterol to the cells, while HDL removes excess cholesterol from the bloodstream.
LDL is denser than HDL.
#11

Which of the following is not a function of lipids in the human body?

Energy storage
Insulation
Enzyme catalysis
Cell signaling
#12

Which lipid is primarily found in the protective coating of leaves, fruits, and animal fur?

Cholesterol
Triglycerides
Phospholipids
Waxes
#13

What is the role of lipoproteins in lipid transport?

Catalyzing lipid synthesis
Storing excess lipids
Transporting lipids in the bloodstream
Breaking down lipids for energy
#14

Which enzyme is responsible for breaking down triglycerides into fatty acids and glycerol?

Lipase
Amylase
Protease
Maltase
#15

Which lipoprotein is often referred to as 'bad' cholesterol due to its role in promoting atherosclerosis?

LDL
HDL
VLDL
IDL
#16

Which enzyme is involved in the synthesis of cholesterol in the liver?

HMG-CoA reductase
Lipoprotein lipase
Lecithin cholesterol acyltransferase
Pancreatic lipase
#17

Which enzyme is involved in the breakdown of fatty acids through β-oxidation in the mitochondria?

Lipoprotein lipase
HMG-CoA reductase
Acyl-CoA dehydrogenase
Pancreatic lipase

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