Download Homework 3-1 Reading Notes Campbell`s Chapter 9

Homework 3-1 Reading Notes Campbell’s Chapter 9
Assignment #1:
Read pp. 162-152
BIG PICTURE OVERVIEW FOR RESPIRATION AND PHOTOSYNTHEIS: Sketch
Fig. 9-2 (p. 162)
9.1 CATABOLIC PATHWAYS YIELD ____________ BY OXIDIZING ORGANIC
_________ (p. 162)
p. 163: Define:
Fermentation-
Cellular Respiration-
General Reaction for respiration:
Organic compounds + O2 →
Balanced Reaction for oxidation of glucose:
Briefly discuss what ATP is and how it is used in the cell:
Define the following:
Redox reaction:
Oxidation
Reduction
Give one example of a redox reaction; identify the reactant that is oxidized and the
reactant that is reduced.
OXIDATION OF ORGANIC FUEL MOLECULES DURING CELLULAR
RESPIRATION (p. 164)
In general, organic molecules that have an abundance of _________________ are
excellent fuels because their bonds are a source of “hilltop” electrons, whose energy may
be released as the electrons “fall” down an _______________ gradient when they are
transferred to ______________.
Briefly describe the structures of NAD+ vs. NADH and the role of NADH in the cell.
Explain the key idea about energy release in combustion reactions vs. respiration
expressed in Fig. 9-5 on page 165..
RECOPY FIGURE 9.6 on page 166 exactly. MEMORIZE THIS DIAGRAM.
The 3 major steps of aerobic Cellular respiration are
1)
2)
3)
Define substrate level phosphorylation:
9-2: GLYCOLYSIS HARVESTS CHEMICAL ENERGY BY OXIDIZING
___________________ TO _____________________. (p. 167)
RECOPY FIG. 9.8, p. 167
THE CITRIC ACID (KREB’S) CYCLE ________________________ THE ENERGYYIELDING OXIDATION OF ORGANIC MOLECULES.
Pyruvate is converted into ___________________________.
Copy Fig. 9.10, p. 170
Copy Fig. 9.11, p. 170
ASSIGNMENT #2: Oxidative Phosphorylation , In Fig. 9.13 on p. 173, Electrons
from NADH and FADH2 are passed down the ________________-_________________
chain and are ultimately transferred to ______.
Copy Fig. 9-16 p. 175
Use Fig. 9.17 on p. 176 to fill in the # of ATP produced in each step of cellular
respiration. Also indicate whether ATP is formed by substrate-level phosphorylation or
oxidative phosphorylation.
# of ATP
Glycolysis
Link rxn(CoA shuttle)
Kreb’s Cycle
Oxidative Phosphorylation
Total
Why is the total count an approximation?
substrate or oxidative
phosphorylation
Copy Fig. 9.18 Fermentation p. 178
Copy 9.19, Pyruvate as juncture, p. 179
p. 180 A metabolic sequence called beta oxidation breaks fatty acid down to _____carbon fragments, which enter as _________ _____.
Copy Fig. 9.20, p. 180
p. 181, Regulation of Cellular Respiration Via Feedback Mechanisms
The cell does not _____________ energy by making more of a particular substance than
it needs. If there is a glut of certain amino acid, for example, the anabolic pathway that
synthesizes the amino acid from an intermediate in the citric acid cycle is switched off.
The most common mechanism for this control is __________________
______________________. The _______ _______________ of the anabolic pathway
inhibits the enzyme that catalyzes an ________ step of the pathway.
Explain the role of phosphofructokinase in regulating glycolysis.