nour_aleslam عميد كلية الطب
عدد الرسائل : 122 العمر : 35 البلد : Egypt مجال الدراسه : Medicine تاريخ التسجيل : 29/12/2007
| موضوع: Short questions in Biochemistry الأربعاء 23 يناير 2008 - 17:16 | |
| Carbohdrates Chemistry
I- Discuss: types & functions of:
1) Mucoplysacharides. 2) Homosacharidic polysaccharides. 3) Disaccharides. 4) Sugar acids. 5) Reducing sugars. 6) Animal polysaccharides.
II- Discuss the different types of:
1) Glycosidic linkages. Give an example of each. 2) Isomerism in monosaccharide. 3) Carbohdrates present in our bodies. 4) Ketosugar.
III- Define:
1)Mutarotation. 2) Optical activity. 3) Epimerism. 4) Racemic isomers. 5) Invert sugar.
IV- Give examples with chemical formulae for:
1) Amino sugar acid. 2) Ketopentose. 3) Fructosan. 4) Non-digestable polysaccharides. 5) Uronic acid. 6) Aldonic acid. 7) Polymer of fructose.
V- Give an example of:
1) Galactosan. 2) Deoxy sugar. 3) Mucopolysaccharide. 4) Aminosugar. 5) Levorotatory sugar. 6) Plant polysaccharide. 7) A pentose sugar. 8) Polysaccharide present in our body.
VI- Complete the following:
1) Glucose with weak oxidizing agent gives……… 2) Galactose with bromine water gives…….. 3) Galactose with conc. Nitric acid gives……… 4) Starch with amylase gives……… 5) Fructose with phenyl hydrazine hydrochloride gives……... 6) Alpha glucose is the unit of the polysaccharides …….. While beta glucose is the unit of the disaccharide……. 7) Acid hydrolysis of cellulose gives……..while enzymatic oxidation gives……..
VII- Illustrate the chemical formulae of : 1) N-acetyl glucosamine. 2) Inulin. 3) Beta deoxyribofuranose. 4) Dehdroascorbic acid. 5) Glucuronic acid. 6) Sorbitol. 7) N-acetyl galactosamine. 8) L-ascorbic acid. 9) B-maltose. 10) B-fructofuranose.
VIII- Enumerate the hydrolytic products of:
-Inulin. -nuraminic acid. -Starch.
IX- Write the formula and structural difference between:
1) Lactose and sucrose. 2) Cellulose and glycogen. 3) Starch and cellulose. 4) Hyaluronic acid and chondrotin sulphate. 5) Inulin and starch.
X- Mention the site of the following in human body:
1) Fructose. 2) Heparin. 3) Glucose. 4) Lactose.
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nour_aleslam عميد كلية الطب
عدد الرسائل : 122 العمر : 35 البلد : Egypt مجال الدراسه : Medicine تاريخ التسجيل : 29/12/2007
| موضوع: رد: Short questions in Biochemistry الأربعاء 23 يناير 2008 - 17:26 | |
| Lipid chemistry
I- Discuss: Chemistry & Functions of:
1- Vitamin A. 2- Phospholipids 3- Bile salts. 4- Glycolipids. 5- Steroid hormones.
II- Outline the classification of:
1- Fatty acids. 2- Sphingolipids. 3- Steroid compounds. 4- Conjugated lipids.
III- Enumerate:
1- Constituents of USF (Unsaponification fraction of fats). 2- Types of bile acids. 3- Essential fatty acids. 4- Steroid compounds.
IV- Write on:
1- Sodium Taurocholate. 2- B-carotene. 3- 7-dehydrocholestrol. 4- Choline phospholipids.
V- State:
1- Iodine number. 2- Saponification value. 3- Rancidity.
VI- Give an example of:
1- 11-Oxysteroid. 2- Polyethenoid fatty acid. 3- Steroid compound present in the blood. 4- Fat soluble vitamin. 5- Long chain saturated fatty acid. 6- Triglyceride with high iodine number. 7- Fat with high saponification value. 8- Corticosteroid.
VII- Compare between:
1- Vitamine D2 & Vutamine D3. 2- Sphingomyelin & cerebrosides. 3- Male sex hormones & estradiole. 4- Glycerophosphatides & cerebrosides.
VIII- Give a test for:
1- Hydroxy fatty acids in fat. 2- Presence of double bond in fat. 3- Detection of glycerolipids.
IX- Complete the following:
1- 7-dehydrocholesterol is a precursor to……. While ……is a precursor to vitamin A. 2- Acetyl number is…….. 3- L- ascorbic acid is……. While vitamin D is ………. 4- Complete hydrolysis of cardiolipin gives …….. 5- Complete hydrolysis of cerebroside gives ………
X- Illustrate the chemical formulae of:
- Lysolecithin. - Sphingol. - Aldosterone. - Oleic acid. - Taurocholic acid. - Provitamin A. - Choline phospholipid. - Retinol. - Lipositol. - Plasmalogen. - 11-Oxysteroid. - Polyethenoid fatty acid. - Ergocalciferol. -
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