AP Biology AP Biology John D. O’Bryant School of Mathematics and Science October 17, 2012

AP Biology Agenda  Do Now (Quiz)  Cellular Respiration

AP Biology Do Now (Quiz)  1. Which of the following statements describes NAD+?  A) NAD+ is reduced to NADH during both glycolysis and the citric acid cycle. B) NAD+ has more chemical energy than NADH. C) NAD+ is reduced by the action of hydrogenases. D) NAD+ can donate electrons for use in oxidative phosphorylation. E) In the absence of NAD+, glycolysis can still function.

AP Biology Do Now (Quiz)  2. The oxygen consumed during cellular respiration is involved directly in which process or event?  A) glycolysis B) accepting electrons at the end of the electron transport chain C) the citric acid cycle D) the oxidation of pyruvate to acetyl CoA E) the phosphorylation of ADP to form ATP

AP Biology Do Now (Quiz)  3. An electron loses potential energy when it  A) shifts to a less electronegative atom. B) shifts to a more electronegative atom. C) increases its kinetic energy. D) increases its activity as an oxidizing agent. E) attaches itself to NAD+.

AP Biology Do Now (Quiz)  4. Why are carbohydrates and fats considered high energy foods?  A) They have a lot of oxygen atoms. B) They have no nitrogen in their makeup. C) They can have very long carbon skeletons. D) They have a lot of electrons associated with hydrogen. E) They are easily reduced.

AP Biology Do Now (Quiz)  5. Why is glycolysis described as having an investment phase and a payoff phase?  A) It both splits molecules and assembles molecules. B) It attaches and detaches phosphate groups. C) It uses glucose and generates pyruvate. D) It shifts molecules from cytosol to mitochondrion. E) It uses stored ATP and then forms a net increase in ATP.

AP Biology Do Now (Quiz)  6. The processes of photosynthesis and cellular respiration are complementary. During these energy conversions, some energy is  A) lost in the form of heat.  B) created in the form of heat.  C) used to create light.  D) destroyed when the chemical bonds of glucose are made.  E) saved in the chemical bonds of water, CO2 and O2.

AP Biology Do Now (Quiz)  7. The overall equation for the cellular respiration of glucose is  A) C 5 H 12 O O 2 → 5 CO H 2 O + energy.  B) 5 CO H 2 O → C5H12O6 + 6 O 2 + energy.  C) C 6 H 12 O O 2 → 6 CO H 2 O + energy.  D) C 6 H 12 O O 2 → 6 CO H 2 O + energy.  E) C 6 H 12 O 6 + energy → 6 CO H 2 O + 6 O 2.

AP Biology Lorenzo’s Oil