BIO 110 LAB QUIZ # 2 QUESTIONS
WITH CORRECT ANSWERS
Enzyme - ANSWERSa catalyst; a protein that speeds up a chm rxn by lowering amount
of energy it takes to get the rxn going
What is the reactant that enzyme acts on? - ANSWERSsubstrate
What is the active site? - ANSWERSregion on enzyme where substrate binds
Lock and Key - ANSWERSShape of active site and shape of substrate fit together like a
lock and key( or a puzzle)
Enzyme Action (5) - ANSWERS1) substrate enters active site
2) held by weak interactions
3) active site can lower energy activity and speed up rxn
4) converted to products
5) products released
Enzymes are not what? - ANSWERSchanged up or used up in a chm rxn
Are enzymes reusable? - ANSWERSYES
A cell has approximately how many different enzymes? - ANSWERS1000
What is a catalyst? - ANSWERSanything that speeds up a rxn; rxn would be so much
slower without it; without being used up in a rxn
buffer - ANSWERSsubstance added to solution to resist changes in pH of solution
temp and pH affect what? - ANSWERSenzyme activity
What is denaturation? - ANSWERSenzyme is unraveled and is destroyed since it
doesn't have an active site so they can't work anymore; losing its shape
Can denaturation reverse? - ANSWERSNO
What is the purpose of utilizing the Benedict's Test when examining the effect of
concentration, temp, and pH on enzyme activity? - ANSWERSTo determine the
presence of glucose or fructose which indicate activity of the enzyme Invertase. sucrose
does not react so if there is a rxn taking place noticed by color change, the simple
sugars are present.
WITH CORRECT ANSWERS
Enzyme - ANSWERSa catalyst; a protein that speeds up a chm rxn by lowering amount
of energy it takes to get the rxn going
What is the reactant that enzyme acts on? - ANSWERSsubstrate
What is the active site? - ANSWERSregion on enzyme where substrate binds
Lock and Key - ANSWERSShape of active site and shape of substrate fit together like a
lock and key( or a puzzle)
Enzyme Action (5) - ANSWERS1) substrate enters active site
2) held by weak interactions
3) active site can lower energy activity and speed up rxn
4) converted to products
5) products released
Enzymes are not what? - ANSWERSchanged up or used up in a chm rxn
Are enzymes reusable? - ANSWERSYES
A cell has approximately how many different enzymes? - ANSWERS1000
What is a catalyst? - ANSWERSanything that speeds up a rxn; rxn would be so much
slower without it; without being used up in a rxn
buffer - ANSWERSsubstance added to solution to resist changes in pH of solution
temp and pH affect what? - ANSWERSenzyme activity
What is denaturation? - ANSWERSenzyme is unraveled and is destroyed since it
doesn't have an active site so they can't work anymore; losing its shape
Can denaturation reverse? - ANSWERSNO
What is the purpose of utilizing the Benedict's Test when examining the effect of
concentration, temp, and pH on enzyme activity? - ANSWERSTo determine the
presence of glucose or fructose which indicate activity of the enzyme Invertase. sucrose
does not react so if there is a rxn taking place noticed by color change, the simple
sugars are present.
