Keystone Practice Review 1

Topic 1 Practice Review

1. Water is a _____ molecule, which lends it to many important properties.

1. polar
2. nonpolar
3. ionic
4. metallic

 

2. Compounds like H2O and CO2 would be ______, which compounds like C6H12O6 and C2H5O2N would be _____.

1. nonpolar; polar
2. polar; nonpolar
3. organic; inorganic
4. inorganic; organic
   
   

3. Due to maximizing the number of _____ bonds, solid water is actually less dense than liquid water

1. metallic
2. hydrogen
3. ionic
4. covalent
   
   

4. A macromolecule contains the elements C,H, and O. It is a polymer of hexagonal rings, and the elements come out to a ratio of ~1:2:1. Which macromolecule would this be?

1. Carbohydrate
2. Lipid
3. Nucleic acid
4. Protein
   
   

5. A monomer is to a polymer as...?

1. a polysaccharide is to a monosaccharide
2. a nucleotide is to nucleic acid
3. a lipid is to a carbohydrate
4. a protein is to an amino acid

6. Which of the following is not a part of an amino acid?

1. amine group
2. carboxyl group
3. phosphate group
4. radical (r) group
   
   

7. The "lock and key" model refers to

1. dehydration synthesis
2. monomers and polymers
3. an enzyme and a substrate
   
   

8. Hydrolysis involves the _____ of water to _____ a polymer.

1. removal; break up
2. removal; build
3. addition; break up
4. addition; build DNA
   
   

9. Glucose, a carbohydrate monomer, would be referred to as a(n)

1. monolipid
2. monosaccharide
3. polysaccharide
4. amino acid
   
   

10. Biological protein catalysts speed up reactions by

1. lowering activation energy
2. increasing the reaction temperature
3. decreasing the amount of reactant collisions
4. all of the above

 

 

 

 

ANSWERS:

A, D, B, A, B, C, C, C, B, A