امتحان اخر العام بيو سنة اولى 2007

بسم الله الرحمن الرحيم

امتحان جامعة اسكندرية الفرقة الاولى 2007
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UNIVERSITY OF ALEXANDRIA

FACULTY OF MEDICINE

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FIRST YEAR EXAM

MEDICAL BIOCHEMISTRY

امتحان مادة:الكيمياء الحيوية

الفرقة الأولى

Time allowed 2.5 hours.

All questions to be attempted.

31/ 5 / 2007

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Discuss the following:

1- Types of O-glycosidic linkage in carbohydrate with examples.

2- Sulphated free GAG (glycosaminoglycan)

3- Derived lipids: classification , write on types & chemistry of bile acids,

4- A phospholipide containing ethanolamine.

(11 Marks)

Write on :

1- Activation & functions of vit D3.

2- Basic structure of immunoglobulins.

3- Lipid peroxidation & antioxidants enzymes.

(9 Marks)

Give an account on:

1- Heterocyclic amino acids.

2- Phosphoprotiens.

3- Iso enzymes.

4- Amidase & transaminases.

(8 Marks)

Enumerate:

1- Methods of separation of proteins .Discuss one of them depending on molecular weight.

2- 2 methods of excision repair. Explain one of them.

(4 Marks)

Explain the function of the following:

1- Reverse transcriptase.

2- Exonucleas.

3- Aminoacyl tRNA synthetase.

4- Theories for the action of enzymes at the catalytic site.

(9 Marks)

Give an example of (without formula

1- Fibrous proteins rich in sulphur .

2- Non proteins amino acid.

3- Glycolipids.

4- Hormones of 18 carbons atom.

5- Metal activated enzymes.

6- Immunoglobulin mediated allergy.

7- Enzymes used for treatment of diseases.

8- Mannose epimer.

' (4 Marks)

"GOOD LUCK"

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