Micro Biology > EXAM > BIOD 171 ESSENTIAL MICROBIOLOGY QUESTIONS AND ANSWERS EXAM 2 (All)

BIOD 171 ESSENTIAL MICROBIOLOGY QUESTIONS AND ANSWERS EXAM 2

Document Content and Description Below

BIOD 171 ESSENTIAL MICROBIOLOGY QUESTIONS AND ANSWERS EXAM 2 True or False: Metabolism is a controlled set of biochemical reactions that occur in living organisms in to maintain life - ANS - TRUE T/... F: Enzymes are polysaccharides that catalyze chemical reactions - ANS - FALSE (ENZYMES ARE PROTEINS) What are usually metal ions and assists enzyme during the catalysis reaction? - ANS - COFACTORS Define catabolism - ANS - THE PROCESS OF BREAKING DOWN LARGER MOLECULES INTO USEFUL ENERGY SOURCES. Upon cellular injury, which metabolic process is involved during the growth and repair phases of the cell? - ANS - THE ANABOLIC PROCESS WOULD BE ACTIVE AS IT IS INVOLVED IN THE BUILDING UP OF SMALL COMPLEXES INTO LARGER COMPLEXES Describe energy transfer process relative to both ATP and ADP - ANS - ATP HAS THE ENERGY (PHOSPHATE GROUP) TO DONATE WHILE ADP CAN ACCEPT ENERGY IN THE FORM OF A PHOSPHATE GROUP. THUS ATP CAN BE REDUCED (ATP-ADP+PI) WHILE ADP CAN BE BUILT INTO ATP (ADP+PI-ATP) An organism that derives its energy (generates ATP) from photons of light is called - ANS - PHOTOTROPHIC MICROORGANISM An organism that derives its energy by removing electrons from elemental sulfur would be classified as - ANS - LITHOTROPH A reactive intermediate would be present in which phosphorylation process - ANS -? THE CHEMICAL COMPOUND LOSING THE PHOSPHATE GROUP IS REFERRED TO AS THE - ANS -PHOSPHORYLATED REACTIVE INTERMEDIATE The catabolism of a single molecule of glucose goes through what 3 distinct transitions - ANS - GLYCOLYSIS, FERMENTATION OR RESPIRATION, THEN THE ETC- ELECTRON TRANSPORT CHAIN What is the most energetic transition in the catabolism of glucose? - ANS - THE ELECTRON TRANSPORT CHAIN YIELDS 34 ATP WHILE BOTH GLYCOLYSIS AND FERMENTATION (OR RESPIRATION) EACH YIELD ONLY 2 ATP Identify the reactants of the following chemical equation: Glucose + 2NAD+ -> 2 NADH + 2 Pyruvate + 2ATP - ANS - THE REACTANTS ARE TO THE LEFT OF THE ARROW: GLUCOSE AND 2NAD+ The presence of what molecule 'signals' to the cell that glycolysis is about to start? - ANS - GLUCOSE-6-PHOSPHATE (G6P) T/F: In absence of oxygen fermentation produces only 2 ATP - ANS - FALSE. FERMENTATION ONLY REDUCES NADH BACK TO NAD+ [Show More]

Last updated: 2 years ago

Preview 1 out of 2 pages

Buy Now

Instant download

We Accept: