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Embed code for: BIO I Lec Resp Assig. Spring 2016
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BIO I LECTURE ASSIGNMENT: RESPIRATION
Dr. Peggy G. VanArman due _____________________
Follow instructions carefully:
The photosynthesis part of the assignment will be assigned
1) This assignment is worth 15 points and is due on _____________________________.
2) Write only in black ink, and write legibly, if I can’t read it, points will be taken off. Keep a one inch margin on all sides.
3) Do not write functions on the drawing, write only labels.
4) Figures should be labeled with a name and figure number underneath, and no part of any figure should touch another figure.
5) Use a separate sheet of paper for Figures 1 and 2, staple it to this page in back.
6) Use this form for your assignment.
I. Figure 1. Redox of NAD+. Draw out the three panels of nicotine adenine dinucleotide (NAD+) oxidation and reduction from page 123 Figure 7.1. Show each panel, and what happens to the two electrons and two protons (H+) donated by an energy rich-molecule. NAD + accepts two e- and one H+ as it becomes NADH. One proton goes off in the cytoplasm. This is called Substrate Level Oxidation, because the electrons and protons are donated by the energy-rich substrate. This process is used in respiration and in photosynthesis.
II. Cellular Respiration: (Final breakdown of glucose using oxygen to make ATP. This cycle is one of the last steps before oxidative metabolism or the making of ATP)
Figure 2. Draw out the Krebs Cycle (Citric Acid Cycle), named for Sir Hans Krebs 1937.
Use pg 131 for a format.
Segment A: oxaloacetate to citrate (citric acid): oxaloacetate takes on acetyl CO-A
(1/2 of a glucose molecule) to help break down glucose
1) Label oxaloacaetate, indicate number of carbons
2) Label acetyl CO-A, indicate number of carbons
3) Label citrate (citric acid), indicate number of carbons
Segment B: two intermediate molecules through the creation of ATP
1) Indicate five carbon and 4 carbon intermediate molecules (you do not have to draw them out, just write 5C intermediate etc.)
2) Indicate each NAD+, NADH, and CO2
3) Indicate ATP
Segment C: 4 carbon molecules through regeneration of oxaloacaetate
1) Indicate 4 carbon molecules
2) Indicate each FAD and FADH2
3) Indicate each NAD+ and NADH
6) Place the number of each element in the boxes provided.
½ glucose molecule (1 turn of the cycle)
1 glucose molecule (2 turns of the cycle)