1. A carbon atom can be asymmetric (chiral) when it is:
a. Attached to four non-carbon atoms
b. Attached to two different types of atoms
c. Attached to four different types of atoms
d. Attached to any number of different types of atoms
2. Allosteric regulation of enzymatic activity is typically based on:
a. Changing enzyme primary structure
b. Changing the amino acid sequence of enzyme active center
c. Changing enzyme conformation
d. All of the above
3. These biological macromolecules are formed by linear polymerization of monomers:
a. Proteins, lipids, nucleic acids
b. Polysaccharides, proteins, nucleic acids
c. Lipids and polysaccharides
d. All of the above
4. Functions of the cellular proteins include:
a. Catalysis, intracellular transport, structural support of organelles
b. Enzymatic reactions, intracellular transport, defense against pathogens
c. Communication between cells, reception of various signals, defense against pathogens
d. All of the above
5. Proteolytic cleavage typically causes:
a. Reversible modification of an enzyme
b. Irreversible modification of an enzyme
c. Both reversible or irreversible modification
d. Denaturing of an enzyme
6. Some of the main cellular functions of polysaccharides are:
a. Transmission of genetic information
b. Translation
c. Energy storage
d. Biochemical catalysis
7. The main function of nucleic acids is:
a. Energy storage
b. Structural support
c. Transmission of genetic information
d. Cellular communication
1. c. Attached to four different types of atoms
2. c. Changing enzyme conformation
3. b. Polysaccharides, proteins, nucleic acids
4. d. All of the above
5. b. Irreversible modification of an enzyme
6. c. Energy storage