Aerobic vs. Anaerobic
Does Anaerobic respiration occur in the mitochondria?
No
What is the function of the outer membrane in the mitochondria.
regulatory membrane, permeable to H+ ions
How many ATP are used in glycolysis? and how many are produced in glycolysis?
2 ATP are used in glycolysis
4 ATP are produced
How many times will the citric acid cycle run?
two times, one for each glucose molecule
Where does the link reaction occur?
mitochondrial matrix
What are the 4 processes of Aerobic respiration?
1. Glycolysis
2. Link Reaction
3. Citric Acid Cycle
4. Chemiosmosis/ ETC
Why is the matrix important for cell respiration?
It contains nutrients and enzyme's that aid in the citric acid cycle, link reaction, and substrate level phosphorylation in the citric acid cycle.
Glycolysis is a _______ process
(2 possible answers)
Catabolic; anaerobic
Where does the citric acid cycle occur?
The matrix of the mitochondria
What must the link reaction initially have in order to occur?
pyruvate
Which process produces the most ATP per molecule of glucose?
A. Anaerobic respiration in a yeast cell
B. Aerobic respiration in a bacterial cell
C. Glycolysis in a human liver cell
D. The formation of lactic acid in a human muscle cell
B. Aerobic Respiration
State the location of high proton concentration caused by electron transport in the mitochondrion?
inter-membrane space / outside inner membrane / between outer and inner membrane
What is the very first step of glycolysis.
Glycolysis is a large molecule, so it must be broken down. Glucose is first phosphorylated, two molecules of ATP aid into the addition of two phosphate groups to form hexose bisphosphate.
What is the first stage of the Citric Acid cycle?
Acetyl CoA from the link reaction is combined with 4-Carbon compound called oxaloacetate. The result is a 6-Carbon compound called citrate.
What is the end product of link, and what process will this be used in?
Acetyl CoA, citric acid cycle
What is the role of NADH + H in aerobic cell respiration?
A. To transfer hydrogen to the electron transport chain
B. To reduce intermediates in the Krebs cycle
C. To accept electrons from the electron transport chain
D. To combine with oxygen to produce water
A. To transfer hydrogen to the electron transport chain
Explain the role of cristae in mitochondria?
-increase the surface area of inner (mitochondrial) membrane; (note: mitochondria is in the stem)
- allow electron transport because of embedded protein electron carriers
-. facilitate proton pumping because of high surface to volume ratio/increased surface area
- increase ATP production because of ATP synthase/synthatase embedded in membrane
During Glycolysis, two NAD+ are turned into 2 _________
NADH + H+
What happens to the carbon dioxide that is lost from the citric acid cycle?
It is a waste product and it is excreted from the body
What is the link reaction in aerobic respiration?
A. Pyruvate is carboxylated, acetyl reacts with coenzyme A, reducing NADH + H+
B. Pyruvate is decarboxylated, acetyl reacts with coenzyme A, forming NADH + H+
C. Pyruvate reacts with coenzyme A, forming NADH + H
D. Pyruvate is decarboxylated, reacting with coenzyme A, reducing NADH + H+
B
Which process requires oxygen in aerobic cell respiration?
A. Oxidation of triose phosphate
B. Reduction of hydrogen carriers
C. Maintaining an oxygen concentration gradient in mitochondria
D. Accepting electrons at the end of the electron transport chain
D. Accepting electrons at the end of the electron transport chain
3 Part Question
What is the relative size of the mitochondria?
What does the lumen equivalent to in the mitochondria?
What type of DNA is in the mitochondria?
1. 0.5-5 micrometers
2. the intermembrane space
3. circular/matriarchal
Four of the five answers listed below are compounds in the glycolysis reactions. Select the exception.
a. fructose-1,6-bisphosphate
b. 3-phosphoglycerate
c. Pyruvate
d. Phosphoenol pyruvate
e. Isocitrate
E. isocitrate
Name any 3 compounds that are in the citric acid cycle.
-Acetyl CoA, Oxaloacetate, Citrate, isocitrate, keto glucterate, succinyl, succinate, fumarate, malate
Describe how the link reaction and the Krebs cycle are related.
Both are involved with Acetyl CoA and both are in the mitochondrial matrix.