Lawrencemuthii597

1. A drug which prevents uric acid synthesis by inhibiting the enzyme xanthine oxidase is (A) Aspirin (B) Allopurinol (C) Colchicine (D) Probenecid 2. Which of the following is required for crystallization and storage of the hormone insulin? (A) Mn++ (B) Mg++ (C) Ca++ (D) Zn++ 3. Oxidation of which substance in the body yields the most calories (A) Glucose (B) Glycogen (C) Protein (D) Lipids 4. Milk is deficient in which vitamins? (A) Vitamin C (B) Vitamin A (C) Vitamin B2 (D) Vi...

Section A – Cell structure and imaging 1 A1 Prokaryote cell structure 1 A2 Eukaryote cell structure 4 A3 Cytoskeleton and molecular motors 9 A4 Bioimaging 18 A5 Cellular fractionation 24 Section B – Amino acids and proteins 29 B1 Amino acids 29 B2 Acids and bases 33 B3 Protein structure 37 B4 Myoglobin and hemoglobin 48 B5 Collagen 56 B6 Protein purification 62 B7 Electrophoresis of proteins 69 B8 Protein sequencing and peptide synthesis 75 Section C – Enzymes 83 C1 Introdu...

MULTIPLE CHOICE Circle the best answer for questions 1-10 (1 pt each) 1. A piece of double stranded DNA has 30% A, what will be the % of G? a. 30% b. 40% c. 20% d. 70% e. not enough information to answer 2. You have a piece of DNA with the sequence ATGC. From this you know, a. A is at the 5’ end b. A is at the 3’ end c. A could be at either the 5’ end or the 3’ end of DNA d. You have a palindromic sequence e. None of the above 3. Which of the following bases pairs with guan...

hapter 1 5 Mechanism o(heart benting TYPES OF CARDIAC MUSCLE FIBRES (A) Contractile cardiac muscle fibres (99 %) These are the libres that constitute the atrial and l'entricular 111alls. They are characterized by the following : (1) They branch and interdigitate (ligure 3). hut eachjibre is a separate cell surrounded by a cell membrane (the sarcolemma). (2) They arc stiated like skeletal muscles and also contra<.:t by a similar mechanism. They contain actin. myosin, tropo...