5 Written Questions

1. The series of chemical reactions by which a living cell breaks down carbohydrates and obtains energy from them
2. The initial breakdown of a carbohydrate, usually glucose, into smaller molecules at the beginning of cell respiration or fermentation
3. An anaerobic pathay producing ATP when in the conversion of pyruvate to lactate produces NAD+, which cycles back through glycolysis
4. A coenzyme, a small molecule required for enzymatic activity, present in all cells; necessary for cell respiration and fatty-acid metabolism
5. The reduced from of FAD (flavin adenine dinucleotide), is the other main electron carrier in cellular respiration other than NADH

5 Matching Questions

1. Facultative Aerobe
2. NAD+
3. Carbon Skeletons
4. Pyruvic Acid
5. Electron Transport System

1. a Provide the basic structures for organic molecules
2. b Nicotinamide adenine dinucleoide; an electron and hydrogen energy carrier in cell respiration
3. c 3-carbon compound that is the end product of glycolysis
4. d The process in which electrons transfer from one carrier molecule to another in photosynthesis and in cell respiration; results in storage of some of the energy in ATP molecules
5. e An organism that is normally anaerobic but can also grow in the presence of oxygen

5 Multiple Choice Questions

1. Occurring or living in conditions without free or dissolved oxygen
   1. Anaerobic
   2. NADH
   3. Aerobic
   4. NAD+
2. The organelles in eukaryotic cells that carry on cell respiration; the site of ATP synthesis and of the Krebs cycle
   1. Coenzyme A
   2. Glycolysis
   3. Mitochondria
   4. Cytochrome
3. The reduced form of NAD+; an electron-carrying molecule that functions in cellular respiration
   1. FAD
   2. NAD+
   3. FADH2
   4. NADH
4. The ion of a 3-carbon acid (lactic acid) formed from pyruvic acid in fermentation
   1. FAD
   2. FADH2
   3. NAD+
   4. Lactate
5. A microorganism that requires oxygen to live
   1. Obligate Aerobe
   2. Facultative Aerobe
   3. Obligate Anaerobe
   4. Anaerobic

5 True/False Questions

1. FAD → Flavin adenine dinucleotide; combines with two hydrogen atoms during cell respiration to form FADH2

   True        False

2. Cytochrome → An electron-carrying pigment in electron transport systems; cytochrome c is the most abundant

   True        False

3. Krebs Cycle → The ion of a 3-carbon acid (lactic acid) formed from pyruvic acid in fermentation

   True        False

4. Hydrolysis → The splitting of a molecule by reaction with water

   True        False

5. Aerobic → Occurring or living in the presence of free or dissolved oxygen

   True        False