Ch. 2: Biochemistry Assessment

Identify the biomolecule

• Lipid
• Protein
• Carbohydrate
• Nucleic Acid

Which letter represents a carbohydrate polymer?

• Label A

• Label B

• Label C

• Label D

• Label E

Which polymer does letter D represents the structure of a(n) _________.

• any macromolecule

• a lipid

• a nucleotide

• carbohydrate

• protein

During a synthesis reaction, amino acids join to form ________.

• carbohydrates

• proteins

• monomers

• nucleic acids

• all polymers

Unsaturated fatty acid chains contain one or more ________ bonds between carbon atoms.

• peptide

• double

• triple

• monosaccharide

• mononucleotide

A nucleotide of DNA contain three components: ________, ________, and ________.

• deoxyribose; a phosphate group; nitrogen-containing base

• ribose; three phosphate groups; nitrogen-containing base

• ribose; two phosphate groups; acid group

• ribose; a phosphate group; nitrogen-containing base

The subatomic particles that are responsible for the chemical behavior of atoms are the ________.

• protons

• neutrons

• electrons

• isotopes

• ions

In order to break a disaccharide down into simple sugar units, ________.

• water molecules must be added to each bond

• water molecules must be removed from each bond

• carbon atoms must be removed from each bond

• water molecules and carbon atoms must be removed from each bond

• carbon atoms must be added to each bond

The building blocks of a triglyceride are ________.

• three fatty acid chains and one glycerol molecule

• one fatty acid chain and one glycerol molecule

• four interlocking rings of carbon and hydrogen atoms

• amino acids

• nucleotides

Which of the following statements are true of the structure of organic molecules? (Read carefully and select all of the correct statements.)

• The subunits of polysaccharides are monosaccharides.

• Amino acids are the subunits of nucleic acids.

• Fatty acids are subunits of phospholipids.

• Glucose is the subunit of glycogen.

• Nucleotides are large molecules made of DNA or RNA.