Quiz #4

Question 1

Plasma membrane glycolipids are found?
A. Exclusively in the inner leaflet.
B. Exclusively in the outer leaflet.
C. Equally distributed between the inner and outer leaflets.
D. Only on the basal surface of the epithelial.

Answer 1

B. Exclusively in the outer leaflet.

Question 2

The two erythrocyte proteins, glycophorin and band 3 are examples of?
     A. Peripheral proteins
     B. Transmembrane proteins
     C. Cytoskeletal proteins
     D. Beta-barrel proteins

Answer 2

B. Transmembrane proteins

Question 3

Bacteria fungi in plant cells use a gradient of \_\_\_\_\_\_ ions across their membranes to drive transport of other molecules into the cells.
     A. Na+
     B. K+
     C. H+
     D. Ca2+

Answer 3

C. H+

Question 4

DNA is a double helix with \_\_\_\_\_\_ base pairs per complete turn of helix.
     A. 3.4
     B. 10
     C. 20
     D. 34

Answer 4

B. 10

Question 5

When thymine and adosine interact with in the molecule they form \_\_\_\_\_.
     A. 2 Hydrogen bonds
     B. 3 Hydrogen bonds
     C. Nucleotide triphosphates
     D. 2 Phosphodiester bonds

Answer 5

A. 2 Hydrogen bonds

Question 6

Molecule that diffuse passively across the plasma membrane most rapidly are \_\_\_\_\_\_?
     A. Small
     B. Hydrophobic
     C. Small and hydrophobic
     D. Small and hydrophilic

Answer 6

C. Small and hydrophobic