عُشــّٓاقـُــ الـْطــّبــ

Presence of cholesterol as a part of lipids in the cellular envelope is essential for control of: A) Receptor-activation process B) Endocytosis as well as exocytosis C) Cytosolic active process D) Trans membrane permeability

The plasma membrane is made up of: A) A rigid layer of protein B) A double layer of protein and cholesterol C) A double layer of phospholipids with cholesterol and proteins embedded at various spots D) A rigid layer of carbohydrate and protein

In mannitol the carbonyl group is reduced to: A Alcohol B Hydroxyl C Carboxyl D None of the above

Compared with amylopectin, glycogen is: A. Less branched B. More highly branched C. Completely unbranched D. Composed of amino acids

Which of the following is a homopolysaccharide? A. Hyaluronic acid B. Glycogen C. Heparin D. Chondroitin sulfate

Which of the following best defines a polysaccharide? A. A carbohydrate containing one monosaccharide B. A carbohydrate containing two monosaccharides C. A carbohydrate composed of many monosaccharide units D. A carbohydrate containing only glucose

‏من مغرب يوم الخميس إلى مغرب يوم الجمعة ،وكل ثانية كنوز من الصالحات، وخزائن من الحسنات ‏قال رسول الله ﷺ : ‏"أكثروا من الصلاةِ عليّ ليلةَ الجمعةِ ويومَ الجمعةِ فإنَّ صلاتَكُم معروضةٌ عليّ" ‏أغسلوا بها ذنوبكم، وأذهبوا بها همومكم… ‏اللَّهُمَّ صَلِّ وَسَلِّمْ وَبَارِكْ عَلَىٰ نبَِيِّنَا مُحَمَّدْ عَدَد مَاذَكرَهُ الذَّاكِرون وعدد مَاغفَل عن ذكْرِه الغافلون

The importance of antioxidants in the body: A Remove free radicals B Protect cell membrane C Considered anticancer D All of them

is used as a source of energy? A Protein B Lipids C Vitamins D None of the above

All the following are monosaccharide derivatives except: A Sugar acids B Dehydroxy sugars C Inositol D Amino sugars

In mannitol the carbonyl group is reduced to: A Alcohol B Hydroxyl C Carboxyl D None of the above

Which of the following is a heteropolysaccharide that acts as an anti-coagulant? A Hyaluronate B Inulin C Heparin D Starch

The glycosidic bond α-(1→4) is present in the following disaccharide: A Lactose B Sucrose C Maltose D Trehalose

To possess optical activity, a compound must be: A Asymmetric B A hexose C Colored D D-glucose

The UCP1 products ATP Heat GTP FADH2

الوتر اذكروني بدعوه صادقه لعلكم اقرب مني لله

The outer thick transparent membrane of the ovum is called: A) Vitelline membrane B) Zona pellucida C) Cumulus ovaricus D) Theca folliculi

The inner thin membrane of the ovum is called: A) Zona pellucida B) Vitelline membrane C) Corona radiata D) Stratum granulosum