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Micro Lab 13

Carbohydrate Catabolism

QuestionAnswer
Chemical reactions that release energy from the decomposition of complex organic molecules. catabolism
organic molecules that contain carbon, hydrogen, and oxygen in the ratio (CH2O)n Carbohydrates
simple sugars containing from three to seven carbon atoms. Monosaccharides
composed of 2 to 20 monosaccharide molecules Oligosaccharides
most common oligosaccharides disaccharides
consist of 20 or more monosaccharide molecules Polysaccharides
Exoenzymes that leave the cell and break down, by addition of water, large substrates into smaller components, which can then be transported into the cell Hydrolytic enzymes
mainly hydrolytic enzymes that are released from the cell to catalyze reactions outside the cell. Exoenzymes
proteins that catalyze biological reactions Enzymes
majority of enzymes function inside a cell therefore are called...? Endoezymes
chemical reactions that occur within all living organisms Metabolism
requires the presence of molecular oxygen (o2) Oxidative catabolism
does not require oxygen but may occur in its presence Fermentative catabolism
nutrient semisolid agar deep containing a high concentration of carbohydrate and a low concentration of peptone OF medium
The metabolic products of glucose after oxidative catabolism Carbon Dioxide (CO2) and Water (H2O)
The metabolic products of glucose after fermentative catabolism small organic molecules, usually organic acids
What is the indicator for OF medium? Bromthymol blue
What indicates metabolism of a carbohydrate on OF medium? bromthymol blue turns yellow in the presence of acids
What indicates inability to catabolize carbohydrates on OF medium? bromthymal blue turns dark blue due to the use of peptones indicating alkaline conditions
What reagent was used for the starch hydrolysis test? Gram's iodine
common end products from fermentation of carbohydrates? gases and acids
Created by: hollieritter
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