Biochemistry: Carbohydrates And Lipids Question Preview (ID: 38891)


Review Of Carbon, Carbohydrates, Lipids.[print questions]

The monomers of lipids are _________________ and ________________.
a) monosaccharides, disaccharides
b) fats, oils
c) glycerol, fatty acids
d) amino acids, glycogen

Lipids are _________________________, which means______________________.
a) hydrophilic, they don't mix with water.
b) hydrophobic, they don't mix with water.
c) polar, they mix well with water.
d) polar, they don't mix with water.

Which of the following is NOT a function of lipids?
a) short-term energy storage
b) long-term energy storage
c) compose the cell membranes
d) chemical messenger molecules

Lipids are molecules that contain
a) carbon, hydrogen, oxygen
b) carbon, hydrogen, oxygen, nitrogen
c) carbon, hydrogen, nitrogen
d) carbon, nitrogen, oxygen

Organic molecules are those that contain ______________ covalently bonded to other atoms.
a) oxygen
b) hydrogen
c) nitrogen
d) carbon

Lipids are made up of mostly ____________________, and a few ______ atoms.
a) C and H, O
b) C and O, H
c) C and N, H
d) N and H, O

Which of the following is a carbohydrate?
a) wax
b) DNA
c) glucose
d) oil

The elements that make up a carbohydrate occur in a _______________ ratio.
a) 1:1:1
b) 1:2:1
c) 1:3:1
d) 2:2:1

Single sugars, called monosaccharides, supply ____________ to cells.
a) energy
b) health
c) insulation
d) protection

The polysaccharide that provides structural support in plants is called
a) glycogen
b) chitin
c) sucrose
d) cellulose

Glycogen, a polysaccharide in your muscles and liver, can be broken down into glucose molecules by
a) dehydration synthesis.
b) hydrolysis
c) isomerization
d) polymerization

Large molecules that form when many monosaccharides bond together are called
a) sugars
b) lipids
c) monosaccharides
d) polysaccharides

What elements make up a carbohydrate?
a) hydrogen, calcium, oxygen
b) carbon, potassium, oxygen
c) carbon, hydrogen, oxygen
d) calcium, potassium, oxygen

The cell membrane of your cells is made up of lipids called _______________.
a) phospholipids.
b) triglycerides.
c) fatty acids.
d) proteins.

The 3 types of carbohydrates are
a) monosaccharides, polysaccharides, disaccharides
b) glycerol, polysaccharide, fatty acid
c) disaccharides, monosaccharides,glycerol
d) glycerol, monosaccharides, polysaccharides

One function of a carbohydrate is
a) to provide the body with immediate energy.
b) to keep the heart functioning smoothly.
c) to store and transport genetic material.
d) to control the rate of reactions

A polymer is a large molecule made up of smaller units called
a) macromolecules.
b) cells.
c) isomers.
d) monomers.

What does it mean for a molecule to be hydrophobic?
a) water-fearing
b) water-loving
c) polar
d) it has a charge

If a lipid molecule is unsaturated, it will have a/an ______________ in the fatty acid tail.
a) extra carbon atom
b) phosphate group
c) double bond
d) extra oxygen atom

Which is TRUE of the structure of a lipid molecule?
a) It is generally a ring-shape.
b) It contains twice as many H as O atoms.
c) It usually contains a long chain of C and H atoms.
d) It is a double helix shape.

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