BIOCHEM MIDTERM EXAM 2. TOP MIDTERM EXAM REVISION QUESTIONS AND CORRECT ANSWERS (GRADED A+) (100% GUARANTEE) (2024 UPDATE)
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Course
Biochem
Institution
Biochem
BIOCHEM MIDTERM EXAM 2. TOP MIDTERM EXAM REVISION
QUESTIONS AND CORRECT ANSWERS (GRADED A+) (100%
GUARANTEE) (2024 UPDATE)
The lipids in biological membranes are mostly:
a) phospholipids and cholesterol
b) triacylglycerols and cholesterol
c) triacylglycerols and phospholipids
d) fatty acids ...
e) fatty acids and polyisoprenoids - ANSWER- phospholipids and cholesterol
Which monosaccharide units are found in DNA?
a) glucose
b) fructose
c) ribose
d) 2-deoxyribose
e) mannose - ANSWER- 2-deoxyribose
What generally happens as an enzyme is purified?
a) The specific activity decreases
b) The turnover number decreases
, c) The specific activity increases
d) The turnover number increases
e) The specific activity stays the same - ANSWER- the specific activity increases
An enzyme with a low Km:
a) Has a low turnover number
b) Is active at low substrate levels
c) Is active only at high substrate levels
d) Has a low equilibrium constant
e) Has a high energy of activation - ANSWER- is active at low substrate levels
What does the turnover number tell us about an enzyme and its reaction kinetics?
a) How many molecules of product can be formed per second per active site
b) Whether the enzyme has a high or low Km
c) Whether the enzyme is stable or fragile
d) How much product is formed at equilibrium
e) Whether the reaction has a high free energy change - ANSWER- How many molecules of
product can be formed per second per active site
The observed Vmax of an enzyme will stay the same when______.
a) A noncompetitive inhibitor is added
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