9. symport and antiport are both examples of a.vesicular transport b. fascilitat

ID: 162511 • Letter: 9

Question

9. symport and antiport are both examples of

a.vesicular transport

b. fascilitated diffusion

c.osmosis

d.secondary active transport

e primary active transport

23. which enzyme unravels DNA and breaks the hydrogen bonds between purines and pymidines during DNA replication

a. DNA polymerase b. DNA primase C. topoisomerase and helicase d. peptidyl transferace e. DNA ligase

26. which is not a function of membrane proteins?

a. serves as channels

b. they serves as membrane-bound enzymes

c. they serves as receptor site

d. they determine as fluidity of the membrane

e. they serve as carriers

64. which is not a graded potential?

a. action potential b. excitatory postsynaptic potential c. inhibitory postsynaptic potential d.recptor potential

9. d.secondary active transport

Secondary active transport also called cotransport uses energy to transport molecules across a membrane;

23. C. topoisomerase and helicase

26 d. they determine fluidity of the membrane

Unsaturated fatty acids and cholesterol composition determines the fluidity of the membrane

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