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- Which sugar is better to use as substitute for table sugar for diabetics, L-arabinose or maltose? Explain why.All of the following products of biosynthesis are nitrogen-rich tetrapyrrole structures that can be synthesized from Krebs cycle intermediates (in some plants, animals, or bacteria), with the exception of: triglyceride molecules chlorophyll b molecules vitamin B12 molecules chlorophyll a molecules heme molecules Identify the Krebs cycle enzyme that consumes a six-carbon substrate molecule, producing a five-carbon product molecule along with NADH, and one molecule of CO2. succinyl CoA synthetase a-ketoglutarate dehydrogenase malate dehydrogenase isocitrate dehydrogenase citrate synthaseWhich of the following will tetrahydrofolate not carry? -C=NH -CH2- -CO2 -CH3 =CH- O-C=O
- Arrange the following order of chemical events of how ribulose reacts in the light independent reaction of photosynthesis starting from ribulose. Fructose 6-phosphate + PGAL Ribulose 5-phosphate Ribulose 1-5 biphosphate Fructose 6-phosphoglyceraldehyde + PGAL Glyceraldehyde 3-phosphate 1,3-biphosphoglyceric acid 3-phosphoglyceric acid Fructose 1,6-biphosphate + PGAL RibuloseAll of the following is correct about folate and vitamin B12 involvement in resynthesis of methionine from homocysteine except: Cobalamin acts as a methyl donor by giving the methyl group to 5-methyl THF Methylcobalamin give a methyl group to homocysteine to form methionine and reform cobalamin 5, 10-methylene THF is converted to 5-methyl THF by methylene THF reductase The involvement of folate and vitamin B12occurs in the cytosol.Consider the following structure. CO₂CH2CH3 CO₂CH2CH3 This substance could be produced by the reaction of the following diene and dienophile. diene + dienophile H CO,CH,CH3 སངས་ CH3CH₂O₂C True False
- Good sources of beta-carotene include all of the following except winter squash cantaloupe whole grain pasta carrotsMatch each of the enzymes involved in de novo pyrimidine synthesis with the correct description: _______ Dihydroorotate dehydrogenase _______ UMP synthase_______ Carbamoyl phosphate synthetase II _______ TMP synthase _______ CTP synthetase_______ Aspartate transcarbamoylase _______ PRPP synthetase (A) attaches an aspartate to an activated carbamoyl molecule(B) bifunctional enzyme that combines a nitrogenase pyrimidine ring to an activated ribose(C) catalyzes the formation of the activated ribose sugar(D) uses glutamine to add an amine to a preformed nucleotide(E) produces the first cyclic nitrogenase ring during de novo pyrimidine synthesis(F) combines bicarbonate and nitrogen from glutamine in the first step of pyrimidine ring synthesis (G) uses a folate derivative to add a methyl group to a preformed nucleotideGlutamate is derived from which of the following molecules? oxaloacetate pyruvate O 3-phosphoglycerate chorismate O a-ketoglutarate
- Identify the following item correctly 1. It is a process wherein the six- carbon sugar, glucose is broken down into two molecules of pyruvate or pyruvic acid. 2. It refers as the unique "side chain". 3. It is a process of adding a phosphate group to a molecule. 4. It is a process that involves splitting of water molecules into hydrogen ions, electrons, and oxygen gas in the presence of light-activated chlorophyll. 5. A process by which green plants harness light energy form the sun to convert it to convert it to chemical energy of sugar.Homopolysaccharide are found abundant in nature. Explain how this class ofpolysaccharide acts as primary component of plants and insects.Xylanase is a class of hydrolyase enzymes that can break down hemicellulose into fermentable sugars. Xylanase is widely used in the pulp and paper industry for chlorine-free enzymatic bleaching of wood pulp. Besides that, xylanase is also applied in several industries like feed, pharmaceuticals, food and beverages. At the industrial scale, xylanases are mainly produced by microorganisms such as bacteria and fungi. 1. Solid-state fermentation and submerged fermentation are the two major techniques applied in the production of xylanase enzymes. Outline how the xylanase enzymes are produced using these two techniques. Identify the advantages and disadvantages of these two techniques. 2. Select a suitable microorganism and substrate that could be applied to produce xylanase enzymes economically at industrial scale via the submerged fermentation techniques with justifications.