QUESTION 2 2.1  Draw a metabolic chart indicating the carbohydrate transporters involved in intestinal transport and distribution of glucose, ga/actose and fructose. 2.2. Draw a metabolic chart depicting the reactions of phase 1 of the glycolysis pathway, including metabolite names, enzyme names and cofactors. Chemical structures are not a requirement in this answer 2.3.raw a diagram of the reactions of mitochondria/ 8-oxidation of hexanoic acid (CH3-(CH2)4-COOH). Include activation and mitochondria/ transportation and the structures of the intermediates

Question 39 The activated intermediate in the synthesis of polysaccharides is: O glucose 1-P O glucose 6-P O UDP-glucose O glucose O fructose 6-phosphate

QUESTION 27 Which of the following is INCORRECT about the elimination of NH4 O a. Marine invertebrate excrete NHT in the form of urea O b. All amino groups are collected in glutamate OC NH, is a very toxic substance O d. Birds remove excess ammonium ions as uric acid QUESTION 28 All of the following are CORRECT regarding arginase EXCEPT: O a. Catalyzes the hydrolysis of arginine Ob. Present only in vertebrates Oc Present in the mitochondrial matrix O d. Regenerate ornithine

Question 7 The malate transporter in the mitochondrial inner membrane is involved in two important biochemical processes: one catabolic, and one anabolic. What are they? Transport of NAD* from glycolysis from the cytosol to the matrix for oxidative phosphorylation, and the last step of glycolysis O A. The citric acid cycle, and the last step of glycolysis OB. The glycerol 3-phosphate shuttle system, and the first gluconeogenesis bypass Transport of FADH, from beta oxidation from the cytosol to the matrix for oxidative phosphorylation, and the first gluconeogenesis bypass OF Transport of NADH from glycolysis from the cytosol to the matrix for oxidative phosphorylation, and the first gluconeogenesis bypass

Question 8 Match the microbial function(s) with the most appropriate nutrient type. Support enzymatic activity in the cell, in relatively high concentrations 10 Required at relatively low concentrations to support certain enzyme functions Act as organic co-enzymes or functional groups of enzymes Components needed in relatively high amounts in cytochromes and electron carrier proteins in respiration Required as precursors for nucleic acid biosynthesis Required in relatively high concentrations for protein translation < Previous [Choose ] [Choose ] Micronutrients Cofactor macronutrients Vitamin growth factors Purine or pyrimidine growth factors Amino acid growth factors [Choose ] [Choose ] [Choose ] [Choose ]

Question 23 2 pts As it turns out, arsenic is a competitive inhibitor of pyruvate dehydrogenase. Suppose you add arsenic to human muscle tissue in a laboratory. What results would you expect to observe? I. Decreased ability of the tissue to relax after contraction II. Increased concentration of ADP in the mitochondrial matrix III. Increased concentration of lactic acid in the cytosol IV. Increased concentration of NADH and FADH2 in the mitochondrial matrix I, II, and IV II, III, IV I and II I and IV I, II, and III

QUESTION 52 An organism is discovered that thrives in both the presence and absence of oxygen in the air. Curiously, the consumption of sugar increases as oxygen is removed from the organism's environment, even though the organism does not gain much weight. This organism O a. is photosynthetic O b. is a normal member of the animal kingdom O c. must utilize a molecule other than oxygen to accept electrons from the electron transport chain O d. only performs fermentation to make ATP

QUESTION 37 Niacin was involved in a groundbreaking nutrition discovery that showed that O a. tryptophan was a precursor of niacin O b. the B vitamins were involved in energy metabolism Oc. niacin was a water-soluble vitamin O d. dermatitis was a symptom of niacin deficiency O e. diet inadequacies could cause disease

QUESTION 3 3.1 Study the diagram below. H G Part of the human digestive system 3.1.1 Label organs D, E, F and G respectively. (4) 3.1.2 Write the LETTER of the part: (a) That stores bile (1) (b) Where protein digestion begins (1) (c) Where most water and mineral salts are absorbed (1) 3.1.3 Give TWO substances that can be stored in organ G. (2) 3.1.4 Explain THREE ways in which part D is suited for its function. (6) 3.1.5 Organ B plays an important role in maintaining the blood sugar level in the body. Name and describe the role B plays when a person runs a 5 km race. (4) (19) Copyright reserved

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