Kingdom of Saudi Arabia
Ministry of Higher Education
Majmaah University
College of Science at Zulfi
‫ الثالث‬:‫المستوى‬
‫المملكة العربية السعودية‬
‫وزارة التعليم العالي‬
‫جامعة المجمعة‬
‫كلية العلوم بالزلفي‬
MDL-214 :‫رقم ورمز المادة‬
‫ أساسيات الكيمياء الحيوية‬:‫اسم المادة‬
:‫الرقم الجامعي‬
:‫اسم الطالب‬
Answer the following questions:
I. Put circle around the correct answer of the followings:
1. The denaturation process of proteins can be achieved by:
(a) Increasing temperature
(b) Chang in pH
(c) Using inorganic salts
(d) All answers are correct
2. Enzymes are composed of
(a) protein
(c) carbohydrates
(b) lipid
(d) All answers are correct
3. Enzymes are found in:
(a) all tissues and fluids of the body
(c) plasma only
(b) blood only
(d) mitochondria only
4. Reversible inhibitors of enzymes include:
(a) Competitive inhibitors
(c) un-competitive inhibitors
(b) non-competitive inhibitors
(d) All
5. The amino acids that cannot be synthesized in the human body at the level needed for normal
growth and must be obtained from food are named:
(a) non-essential amino acids
(b) neutral amino acids
(c) essential amino acids
(d) acidic amino acids
6. Enzymes that require a metal in their composition are known as
(a) metal-activated enzymes
(b) metalloenzymes
(c) isozymes
(d) all answers are wrong
II. Complete the following reactions:
Q III. Write down the X and Y-coordinate on the following diagram and determine the V max & Km
values.
The diagram
Type of inhibitor
………………………………………………………
……………………………………………………
Binding site on enzyme
………………………………………………………
……………………………………………………
Kinetic effect
………………………………………………………
………………………………………………………
VI. Match each of the following on the right:
1
Collagens
The monomer of protein
2
Lipoprotein
3
Amino acid with free amino group
Neutral amino acid with polar side chain
4
Amino acid
Conjugated protein
Protein
5
N-terminal amino acid
6
-helix
7
Secondary structure
Fibrous protein
8
Albumins
Globular protein
9
Alanylglycine
Dipeptide
10
Primary structure
polypeptide chain
11
Hemoglobin
Basic amino acid
With my best wishes