#Question id: 629
#Unit 1. Molecules and their Interaction Relevant to Biology
In the presence of a fixed concentration of a competitive inhibitor, which of the following would best characterize an enzyme-catalyzed reaction when the concentration of the substrate is increased?
#Question id: 26474
#Unit 3. Fundamental Processes
#Question id: 73
#Unit 1. Molecules and their Interaction Relevant to Biology
Match the Variation of Reaction Spontaneity (Sign of ΔG) given in Column I with the Signs of ΔH and ΔS given in column II.
|
COLUMN I |
COLUMN II |
|
|
|
|
ΔH |
ΔS |
ΔG = ΔH – TΔS |
|
1. |
− |
+ |
a. The
reaction is both enthalpically and entropically opposed. It is nonspontaneous
(endergonic) at all temperatures. |
|
2. |
− |
− |
b. The
reaction is enthalpically opposed (endothermic) but entropically favored. It
is spontaneous only at temperatures above T = ΔH/ΔS. |
|
3. |
+ |
+ |
c. The
reaction is enthalpically favored but entropically opposed. It is spontaneous
only at temperatures below T = ΔH/ΔS. |
|
4. |
+ |
− |
d. The
reaction is both enthalpically favored (exothermic) and entropically favored.
It is spontaneous (exergonic) at all temperatures. |
#Question id: 527
#Unit 1. Molecules and their Interaction Relevant to Biology
What chemical species activates the GLUT4 protein to transport glucose into cells?
#Question id: 117
#Unit 1. Molecules and their Interaction Relevant to Biology
Which of the following is not true of sterols?