Section 1: Multiple Choice questions. Choose the single best answer. 1. The structure shown below is a A. Monosacharide B. Disaccharide C. Polysaccharlde D. Dipeptide 2- Which of the following will make the membrane more fluid? A. Low temperature B. Presence of more saturated fatty acids C. Presence of more unsaturated fatty acids D. Presence of cholesterol in membrane at high temperature 3. All of the following are components of cell membrane EXCEPT A. Phospholipids B. Cholesterol C. Proteins D. Triacylglycerol 4- Simple lipids are composed of A. fatty acids and sphingosine B. phospholipids and cholesterol C. fatty acid and ceramide D. fatty acids and glycerol 5. The final three-dimensional structure of the hemoglobit A. primary structure B. secondary structure C. tertiary structure D. quatemary structure 6. Which part of the berioglobin molecules is responsible for binding with oxygen? A. Histidine of alpha helices B. Iron in the heme molecule C. The amino terminal end of the all chains D. The carboxy terminal end of all chaitis 7. -Helix and -pleated sheets are A. primary structure B. secondary structure C. tertiary structure D. quatemary itricture