Biomolecules Unit Test Review

Groups A and B in the table below contain molecular formulas of compounds. How would the compounds in these groups be chemically classified?

• group A - inorganic, group B - organic

• group A - organic, group B - inorganic

• group A - monosaccharides, group B - disaccharides

• group A - disaccharides, group B - monosaccharides

Organic compounds are used as building blocks for

• water, DNA, and starches

• water, proteins, and oxygen

• proteins, DNA, and carbon dioxide

• proteins, starches, and fats

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Most organisms contain

• organic compounds, only

• inorganic compounds, only

• both organic and inorganic compounds

• neither organic nor inorganic compounds

The diagram below represents the building block of a large molecule known as a

• protein

• fatty acid

• carbohydrate

• nucleic acid

What are the building blocks of lipids?

• Glucose

• Amino acids

• Fatty acids and glycerol

• Nucleic acids

Glucose molecules are the building blocks of what class of macromolecule?

• Proteins

• Lipids

• Nucleotides

• Carbohydrates

The basic building blocks of a protein are

• glucose molecules

• amino acids

• hormones

• fats

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The diagram represents a portion of a starch molecule. The energy in this molecule is stored

• in the bonds between atoms

• in the oxygen found in the molecule

• when the carbon atoms break off

• when water breaks this molecule apart

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Base your answer to the following question on the diagram below, which represents stages in the digestion of a starch, and on your knowledge of biology. The structure labeled X most likely represents

• an antibody

• a receptor molecule

• an enzyme

• a hormone

A characteristic of hormones and enzymes that allows them to work effectively with other organic molecules is their

• specific shape

• small size

• concentration of carbon and hydrogen atoms

• high-energy bonds