In general, chemical reactions happen faster at higher temperatures because: The
ID: 833209 • Letter: I
Question
In general, chemical reactions happen faster at higher temperatures because: The high temperature hasn't reached the activation energy of the reaction At higher temperatures, molecules and ions move faster and are more likely to make contact with each other At low temperatures, the molecules are frozen in place The catalysts denature at low temperature Catalysts are unaffected by temperature changes The major effect of a catalyst on a reaction is to: Keep the substrates apart Lower the equilibrium constant Raise the equilibrium constant Raise the activation energy Lower the activation energy Consider the reaction: ethyl acetate + H20 rightarrow ethanol + acetic acid, the enzyme which catalyzes this reaction is classified as a/an: Oxidoreductase Transferase Hydrolase Lyase Isomerase The Bohr effect describes the affect of pH on binding of oxygen by hemoglobin. In general, this effect: Provides a mechanism by which hemoglobin binds oxygen tightly in the presence of carbonic acid in muscles Provides an explanation for the release of oxygen at high pH in lung tissue Provides a mechanism for the binding of hemoglobin and oxygen at low pH in lungs Provides an explanation for the release of oxygen at low pH in muscle tissue Provides a link between oxygen consumption and respiration Identify the following as a cofactor, coenzyme, apoenzyme, or hotoenzyme Zn2+ Active alcohol dehydrogenase Alcohol dehydrogenase lacking Zn2+ FMN NAD+Explanation / Answer
6) b
hotter molecules or ions move faster than cold ones and interact more often.
7) e .
A catalyst provides an alternative route for the reaction with a lower activation energy.
8) c . Hydrolase
9) c
10) a ) cofactor
b) holoenzyme
c) apoenzyme
d) cofactor
e) coenzyme