Bios%20100%20Fall%202009%20Second%20exam%20revised

Bios%20100%20Fall%202009%20Second%20exam%20revised - Bios...

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Bios 100 Fall 2009 Second exam 1. The molecule nicotinamide is essential in A. enabling pyruvate to cross the mitochondrial membrane B. transferring energy derived from glucose to the electron transport chain C. converting chemical energy to light energy in chloroplasts D. directly enabling ATPsynthase to produce ATP E. regulating photosystem II 2. In a typical human cell, how many ATP molecules lose and then regain a phosphate group each minute? A. 3 B. 3000 C. 3 * 10 6 D. 3 * 10 9 E. 6*10 23 3. How many molecules of ATP are there in a typical human cell? A. 1000 B. 10 6 (1 million) C. 10 9 (1 billion) D. 6 * 10 23 E. 10 12 4. The process whereby NADH goes to NAD+ is called A. oxidation B. reduction C. condensation D. hydrolysis E. polymerization 5. When methane (CH4) reacts with oxygen to form CO 2 and H 2 0, the carbon in methane is said to be A. oxidized B. reduced C. condensed D. split E. carbonated 6. The disease pellagra results from an insufficient amount of A. ATP B. formaldehyde C. pyruvate dehydrogenase D. glucose E. niacin
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7. An absorbtion spectrum A. reveals what light is absorbed best by leaves B. reveals which light is most effective in producing oxygen during photosynthesis C. describes how ATPsynthase manufactures ATP D. separates out different pigments in a leaf E. shows the steps in oxidative phosphorylation 8. Do plants have mitochondria? A. Yes B. No C. only when they are seeds D. only when they are small seedlings E. only when the moon is full 9. Which is not part of the Calvin cycle reactions? A. Fixation B. Reduction C. Regeneration D. Oxidative phosphorylation 10. The molecule gramicidin A. is key in the regulation of the Krebs cycle B. plays a key role in transferring an electron to cytochromes C. is an integral membrane protein spanning the plasma membrane that allows ions to cross the cell membrane D. inhibits the activity of fructose 1,6 bisphosphate E. promotes electrons to new energy levels in chloroplasts 11. Which of the following molecules is used directly by the molecule ATPsynthase to produce ATP? A. NADPH B. H+ C. FADH2 D. ubiquinone E. plastoquinone 12. Coenzyme A is important because A. it oxidizes pyruvate B. it oxidizes oxaloacetate C. it forms two NADH molecules D. it transfers an acetyl group onto oxaloacetate E. it removes a CO2 group from pyruvate
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13. Which of the following molecules in the Krebs cycle has the most energy? A.
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This note was uploaded on 03/06/2011 for the course BIOS 101 taught by Professor Molumby during the Spring '08 term at Ill. Chicago.

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Bios%20100%20Fall%202009%20Second%20exam%20revised - Bios...

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