Lipid Structure Exam Prep Quiz

Which of the following is a major class of lipids?

Triglycerides

Fatty acids are composed of:

Hydrocarbon chains with a carboxyl group

A saturated fatty acid contains:

No double bonds

An unsaturated fatty acid contains:

One or more double bonds

Triglycerides consist of:

Three fatty acids and one glycerol

Phospholipids contain:

Two fatty acids and a phosphate group

The hydrophilic region of a phospholipid is the:

Phosphate head

The hydrophobic region of a phospholipid is the:

Fatty acid tails

Cholesterol is classified as a:

Steroid

Steroids are characterized by:

Four fused carbon rings

Which lipid is essential for membrane fluidity?

Cholesterol

A cis double bond in a fatty acid causes:

A bend or kink in the chain

Trans fats contain:

Trans double bonds

Glycolipids contain:

A carbohydrate group and lipid components

Which lipid is primarily used for long-term storage?

Triglycerides

Omega-3 fatty acids are:

Polyunsaturated

The term “amphipathic” refers to molecules that:

Have both hydrophobic and hydrophilic regions

Which lipid forms the basic structure of cell membranes?

Phospholipids

Waxes are composed of:

Fatty acids and long-chain alcohols

Which of the following is NOT a function of lipids?

Enzyme catalysis

The fluid mosaic model describes:

Lipid bilayer structure

Lipids are generally:

Hydrophobic

Which lipid is a precursor for hormones such as estrogen and testosterone?

Cholesterol

The fatty acid tails in phospholipids are attached to glycerol by:

Ester bonds

Lipids containing ring structures are known as:

Steroids

Which lipid is most abundant is adipose tissue?

Triglycerides

A fatty acid with two or more double bonds is called:

Polyunsaturated

Lipids are primarily composed of:

Carbon, hydrogen, oxygen

Which lipids helps waterproof plant leaves?

Waxes

The polar head of a phospholipid typically contains:

Phosphate group