Carbohydrates

  1. What types of atoms make up carbohydrates?
  1. How does the number of H atoms in a carbohydrate compare to the number of oxygen atoms?
  1. What is the simplest type of carbohydrate?
  1. What two functional groups are found in monosaccharides?
  1. Name two common monosaccharides and give the molecular formula for each.
  1. What suffix is commonly found on the end of sugar names?
  1. How are monosaccharides used in a cell?
  1. What is a disaccharide? Name two common disaccharides.
  1. Fill in the chart below for the three most commonly occurring polysaccharides:

Polysaccharide / Monomer / Type of organism in which it is found / Function
  1. What would you expect to get if you hydrolyze (do hydrolysis on) the following:

A) a starch molecule C) a glycogen molecule

B) a sucrose molecule D) a cellulose molecule

  1. Which of the molecules above cannot be hydrolyzed by the digestive system of most animals?
  1. Are carbohydrates generally hydrophilic or hydrophobic? )

Lipids

  1. Give two examples of lipids.
  1. Give an example of how each is used in living organisms.
  1. What kinds of atoms are found in lipids?
  1. Explain why oils don’t dissolve in water.
  1. What smaller molecules make up a fat molecule?
  1. What functional group do all fatty acids have in common?
  1. How are saturated and unsaturated fatty acids different?
  1. Predict which of the following would contain saturated fatty acids and which would contain unsaturated fatty acids:

A)Solid Crisco shortening

B)Olive oil

C)Bacon grease

  1. Why are diets high in saturated fats often considered unhealthy?
  1. How are “hydrogenated oils” changed chemically? (Not in the book! We will discuss this in class.)

11. What is a steroid?

Proteins

  1. Describe 6 functions proteins may perform.
  1. What are the monomers of proteins?
  2. How many different kinds are there?
  1. What types of atoms are found in proteins?
  2. Draw the general structure for an amino acid and label its functional groups.
  1. Which part of an amino acid determines its specific properties?
  2. When 2 amino acids are joined together by dehydration synthesis a ______bond is formed.
  1. What is a polypeptide?
  1. What kind of molecules will result when a protein is completely hydrolyzed?
  1. What makes different kinds of proteins unique?
  1. Explain how a protein’s shape is determined.
  1. What is denaturation?

Nucleic Acids

  1. Name two types of nucleic acids.
  1. What are their functions?
  1. What are the monomers that make up nucleic acids?
  1. Name the three parts that combine to form a nucleotide.
  1. What is the name of the "twisted ladder" shape of the DNA molecule?