Biology > EXAM > BIOD 171 Microbiology - Module 2 Exam Metabolism-Portage Learning (All)

BIOD 171 Microbiology - Module 2 Exam Metabolism-Portage Learning

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What is cellular metabolism? (ANS- a controlled set of biochemical reactions that occur in living organisms in order to maintain life What is an enzyme? (ANS- a protein, or group of proteins, t... hat catalyze (speed up) chemical reactions What is unique about enzymes? (ANS- the enzyme is not consumed during the reaction and can be used repeatedly by the cell What is a cofactor? (ANS- a small chemical component, usually metal ions, that assist enzymes during the catalysis reactions Do cofactors serve as regulators of chemical reactions? (ANS- Yes In the absence of the proper cofactor what happens? (ANS- enzymes are inactive In the presence of the proper cofactor what happens? (ANS- enzymes are active In order to produce sufficient levels of energy what must microorganisms do? (ANS- microorganisms must break down complex nutrients into smaller, manageable (and useful) subunits What 3 things must enzymes break down into smaller subunits? (ANS- Enzymes must break down proteins, lipids and polysaccharides into their smaller building-block molecules Fats or lipids get broken down into what? (ANS- glycerol/fatty acids Most metabolic processes can be classified as either of what 2 things? (ANS- catabolism or anabolism What is catabolism? (ANS- the process of breaking down larger molecules into useful energy sources What is anabolism? (ANS- the building up or biosynthesis of macromolecules from smaller molecular units into larger complexes The anabolic process is often used during what? (ANS- growth and repair phases of the cell. [Show More]

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