Chapter 5 Assessment (19/20)
1. Which sentence does NOT describe one of the functions of proteins of the plasma
membrane?
a. Proteins of the plasma membrane can increase the rate of a chemical reaction.
b. Proteins of the plasma membrane can bind to a substance to carry it through the
membrane.
c. Proteins of the plasma membrane can initiate the replication of the genetic
material.
d. Proteins of the plasma membrane can act as a receptor for substances external
to the cell.
e. Proteins of the plasma membrane can form a channel through the membrane.
2. Which of the following would not affect the ability of tissues and organs to be
transplanted?
a. Cell recognition proteins in cells of tissues to be transplanted
b. Major histocompatibility complex proteins in cells of tissues to be transplanted
c. Carbohydrate chains in the cell membranes in the tissues to be transplanted
d. The mitochondrial DNA sequence in cells of tissues to be transplanted
3. All life forms currently have a basic cell membrane so we hypothesize that the earliest
cells also had membranes. It is likely that the primordial environment was acidic. In
order for a cell to function in this type of environment, the cell membrane would have to
include
a. An acid-proof cell wall
b. A totally nonpermeable membrane
c. A proton (H+) pump
1. Which sentence does NOT describe one of the functions of proteins of the plasma
membrane?
a. Proteins of the plasma membrane can increase the rate of a chemical reaction.
b. Proteins of the plasma membrane can bind to a substance to carry it through the
membrane.
c. Proteins of the plasma membrane can initiate the replication of the genetic
material.
d. Proteins of the plasma membrane can act as a receptor for substances external
to the cell.
e. Proteins of the plasma membrane can form a channel through the membrane.
2. Which of the following would not affect the ability of tissues and organs to be
transplanted?
a. Cell recognition proteins in cells of tissues to be transplanted
b. Major histocompatibility complex proteins in cells of tissues to be transplanted
c. Carbohydrate chains in the cell membranes in the tissues to be transplanted
d. The mitochondrial DNA sequence in cells of tissues to be transplanted
3. All life forms currently have a basic cell membrane so we hypothesize that the earliest
cells also had membranes. It is likely that the primordial environment was acidic. In
order for a cell to function in this type of environment, the cell membrane would have to
include
a. An acid-proof cell wall
b. A totally nonpermeable membrane
c. A proton (H+) pump
