Exploring the Chemistry of Life in AP Biology

What is the monomer of carbohydrates?

• Polysaccharide

• Monosaccharide

• Nucleotide

• Amino acid

Which bond is formed between amino acids in proteins?

• Phosphodiester linkage

• Glycosidic linkage

• Hydrogen bond

• Peptide bond

What is the primary structure of a protein?

• Three-dimensional structure

• Long string of amino acids

• Beta pleated sheet

• Alpha helix

Which nitrogenous base is not found in DNA?

• Uracil

• Adenine

• Thymine

• Cytosine

What characteristic is common to all lipids?

• They are polar

• They contain nitrogen

• They are polymers

• They are non-polar

What type of bond is present in unsaturated fatty acids that is not in saturated fatty acids?

• Double covalent bond

• Ionic bond

• Glycosidic linkage

• Hydrogen bond

Which part of the phospholipid is hydrophilic?

• Fatty acid tails

• Glycerol backbone

• Steroid rings

• Phosphate group

What property of water allows it to dissolve many substances?

• High specific heat

• Surface tension

• Capillary action

• Universal solvent

Which of the following is a function of steroids in the body?

• Structural support

• Energy storage

• Signal transduction

• Enzyme activity

How does pH relate to hydrogen ion concentration?

• Directly proportional

• Inversely proportional

• Not related

• Only related in acidic conditions