Biochemistry Review

Which molecules are the basic building blocks of proteins?

• Monosaccharides

• Amino acids

• Fatty acids

• Nucleotides

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A compound is considered organic if it contains which element?

• Oxygen

• Nitrogen

• Carbon

• Phosphorus

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Which type of macromolecule is the body's main source of quick energy?

• Lipids

• Carbohydrates

• Proteins

• Nucleic acids

Nucleotides are the subunits of DNA. What is their main function?

• Store and transmit genetic information

• Provide insulation

• Build structural proteins

• Store short-term energy

Which of the following pairs is correctly matched?

• Lipids – provide immediate energy

• Proteins – act as enzymes

• Carbohydrates – carry genetic code

• Nucleic acids – form cell membranes

Which macromolecule is primarily used for long-term energy storage and insulation?

• Carbohydrates

• Proteins

• Lipids

• Nucleic acids

A student adds an acid to a solution, but the pH stays the same. Which substance is most likely present?

• Enzyme

• Buffer

• Salt

• Lipid

The smaller repeating units that join together to form polymers are called:

• Monomers

• Substrates

• Compounds

• Isotopes

Which statement about enzymes is true?

• They are used up during chemical reactions.

• They speed up chemical reactions without being consumed.

• They increase the activation energy needed.

• They only function once in a cell’s lifetime.

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The place on an enzyme where the substrate attaches is called the:

• Product site

• Binding pocket

• Active site

• Catalyst site