Question

name
period
date
d. they build up in the intermembrane space

1. when cellular respiration requires oxygen it is said to be

a. aerobic
b. anaerobic

1. the movement of which ion across the membrane from the intermembrane space to the

matrix causes atp synthase to spin and make atp
a. na+ ions
b. oxygen
c. h+ ions
d. water

1. which stage of cellular respiration produces the most atp?

a. glycolysis
b. krebs cycle
c. electron transport
d. acetyl-coa charging
open ended questions: write your answers in the space provided.
1 write the complete overall chemical equation for cellular respiration using words:
+
+
+
+
→
+

1. compare this reaction to photosynthesis (6 h₂o + 6 co₂ + light energy → c₆h₁₂o₆ +

6 o₂)
how are these 2 equations related?

tell the kind of fermentation (alcohol or lactic acid) used in each example:
3a. yeast uses this to make bread dough rise
3b. your muscle cells use this during rapid exercise when oxygen is low
3c. bacteria and yeast use this to make beer and wine and

Explanation:

• Question 8: Aerobic respiration requires oxygen. Anaerobic does not. So when cellular respiration requires oxygen, it is aerobic.
• Question 9: In the electron - transport chain, \(H^{+}\) ions move from the intermembrane space to the matrix. This movement causes ATP synthase to spin and make ATP.
• Question 10: Glycolysis produces a small amount of ATP (net 2 ATP). The Krebs cycle also produces a relatively small amount (about 2 ATP per glucose). The electron - transport chain produces the most ATP (about 32 - 34 ATP per glucose).
• Open - ended Question 1: Cellular respiration is the process of breaking down glucose in the presence of oxygen to produce carbon dioxide, water, and energy (ATP). So the equation is \(Glucose+Oxygen

ightarrow Carbon\ dioxide + Water+Energy\).

• Open - ended Question 2: Photosynthesis uses carbon dioxide, water, and light energy to produce glucose and oxygen. Cellular respiration uses glucose and oxygen to produce carbon dioxide, water, and energy. They are reverse reactions.
• Open - ended Question 3a: Yeast uses alcohol fermentation. During alcohol fermentation, yeast breaks down glucose into ethanol (\(C_{2}H_{5}OH\)) and carbon dioxide (\(CO_{2}\)). The carbon dioxide makes the bread dough rise.
• Open - ended Question 3b: Muscle cells use lactic acid fermentation when oxygen is low during rapid exercise. Glucose is converted into lactic acid (\(C_{3}H_{6}O_{3}\)).
• Open - ended Question 3c: Bacteria and yeast use alcohol fermentation to make beer and wine.

Answer:

• Question 8: A. aerobic
• Question 9: C. \(H^{+}\) ions
• Question 10: C. Electron transport
• Open - ended Question 1: \(Glucose+Oxygen

ightarrow Carbon\ dioxide + Water+Energy\)

• Open - ended Question 2: Photosynthesis and cellular respiration are reverse reactions. Photosynthesis: \(6H_{2}O + 6CO_{2}+light\ energy

ightarrow C_{6}H_{12}O_{6}+6O_{2}\). Cellular respiration: \(C_{6}H_{12}O_{6}+6O_{2}
ightarrow6CO_{2}+6H_{2}O + Energy\)

• Open - ended Question 3a: Alcohol fermentation
• Open - ended Question 3b: Lactic acid fermentation
• Open - ended Question 3c: Alcohol fermentation