Pub Med (First year activities)

تم دقائق وبنرسل بالملف.... ❤️‍🔥❤️‍🔥❤️‍🔥

🔴 🔴🔴 🔴 طبعاً الملف بنزلة خلال الساعات القادمة ملف جبار ❤️‍🔥❤️‍🔥 ملف عالمي ❤️‍🔥❤️‍🔥 اقرؤا البنك اضمن لكم التميز 😉 عدد الاسئله 310 سوال مهم جدا 🔴 🔴

انا من رأيِ إننا انزل لكم البنك اليوم من أجل يكون في معاكم وقت تذاكرو البنك وتعيدوا 🤔🤔🤔🤔👾

Building blocks of nucleic acid 1) A. Nucleotide 2) B. Nucleoside 3) C. Amino acids

Q1 A monosaccharide contains six carbon atoms and has a ketone functional group. It is best classified as: A. Aldohexose B. Aldopentose C. Ketohexose D. Ketopentose Q2 In a Fischer projection, the D/L configuration of a monosaccharide is determined by the configuration of: A. The highest numbered chiral carbon B. The lowest numbered chiral carbon C. The anomeric carbon D. The carbonyl carbon Q3 Which statement about D-glucose and D-galactose is CORRECT? A. They are anomers B. They differ at C-2 only C. They differ at C-4 only D. They are enantiomers Q4 A monosaccharide forms a cyclic structure by an intramolecular reaction between: A. Two hydroxyl groups B. Carbonyl group and hydroxyl group C. Carboxyl group and hydroxyl group D. Amino group and hydroxyl group Q5 Which carbohydrate contains an α(1→4) glycosidic bond and retains a free anomeric carbon? A. Sucrose B. Lactose C. Maltose D. Trehalose Q6 Sucrose is considered a non-reducing sugar primarily because: A. It contains fructose B. It contains glucose C. Both anomeric carbons participate in the glycosidic bond D. It cannot undergo hydrolysis Q7 Complete hydrolysis of lactose produces: A. Glucose + glucose B. Glucose + fructose C. Glucose + galactose D. Galactose + fructose Q8 Which polysaccharide is composed exclusively of glucose units but contains β(1→4) linkages? A. Glycogen B. Amylose C. Cellulose D. Amylopectin Q9 The major structural difference between amylose and amylopectin is that: A. Amylose contains fructose while amylopectin contains glucose B. Amylose is branched while amylopectin is unbranched C. Amylose is essentially linear while amylopectin is branched D. Amylose contains β-linkages while amylopectin contains α-linkages Q10 Compared with amylopectin, glycogen is characterized by: A. β(1→4) linkages B. More frequent branching C. Absence of α(1→4) bonds D. Presence of galactose instead of glucose Q11 Oxidation of the aldehyde group at C-1 of glucose produces: A. Glucuronic acid B. Gluconic acid C. Glucaric acid D. Sorbitol Q12 Oxidation of the primary alcohol group at C-6 of glucose produces: A. Gluconic acid B. Glucuronic acid C. Glucaric acid D. Sorbitol Q13 Reduction of glucose produces mainly: A. Fructose B. Galactose C. Sorbitol D. Glucuronic acid Q14 A sugar gives a positive Benedict's test. The most appropriate explanation is that the sugar: A. Must be a monosaccharide B. Must contain fructose C. Has a free or potentially free anomeric carbon D. Must contain an aldehyde group in its open-chain form only Q15 Which of the following is NOT a reducing sugar? A. Maltose B. Lactose C. Glucose D. Sucrose Q16 The formation of osazone crystals involves reaction of a reducing sugar with: A. Phenylhydrazine B. Hydroxylamine C. Benedict's reagent D. Fehling's solution Q17 Glucose, fructose and mannose form the same osazone because: A. They have identical molecular formulas only B. Their configurations at C-1 and C-2 are destroyed during osazone formation C. They are all epimers at C-6 D. They contain the same number of chiral centers Q18 Which pair represents epimers? A. D-glucose and D-fructose B. D-glucose and L-glucose C. D-glucose and D-galactose D. D-glucose and sucrose Q19 Which enzyme is primarily responsible for carbohydrate digestion in the oral cavity? A. Pancreatic amylase B. Salivary amylase C. Maltase D. Sucrase Q20 — A patient has a deficiency of lactase. After consuming milk, which carbohydrate will remain inadequately digested and subsequently contribute to osmotic symptoms in the intestine? A. Sucrose B. Maltose C. Lactose D. Glycogen

الذي عندة استفسار عن البنك او أي سؤال عبر البوت يتواصل 👇🏻👇🏻 @RihlatTabeebBot