Maap Section 1 Review

Macromolecules are made of subunits called monomers. What are the monomers of proteins called?

• nucleic acids

• monosaccahrides

• amino acids

• fatty acids

Enzymes can act as organic catalyst in living things. How do enzymes affect reaction rates in cells?

• they slow down reactions

• They speed up reactions

• they use more energy

The diagram shows a monomer of a macromolecule. Which macromolecule is made up of the same structure?

• nucleic acids

• proteins

• carbohydrates

• fatty acids

which two of the following are made up of nucleotides?

• steroid hormones

• polysaccharides

• DNA

• RNA

• polypeptide

An enzyme called carbonic anhydrase is found in red blood cells. The enzyme catalyzes the reaction of H2CO3 into H2O and CO2. Which molecule represents the substrate?

• the anhydrase?

• the H2CO3?

• The H2O?

• The red blood cells?

the molecule shown is cellulose. Cellulose is classified as which of the following?

• a polysaccharide

• an amino acid

• a nucleic acid

• a steroid

amino acids can undergo dehydration synthesis reactions to form larger molecules called

• polysaccharides

• triglycerides

• nucleotides

• polypeptides

Carbohydrates and lipids share which two of the following characteristics?

• contain nitrogen

• dissolve in water

• form hormones

• used for energy

• contain carbon, hydrogen, and oxygen

Protein in the stomach is partially digested with the help of the enzyme pepsin. In the intestines, the enzyme trypsin further breaks down the protein. Trypsin likely breaks down protein into which of these components?

• amino acids

• nucleic acids

• fatty acids

• monosaccharides

Lipids are found in all cell membranes. What is the main function of lipids in the cell membrane?

• the build tissues such as bone and muscle

• the provide a selectively permeable barrier for the cell membrane

• they act as catalyst for breaking down substrates

• the break down worn out parts of cells (waste)