In your respiration packet, answer the six questions on page one.

Warm-up

The “A” in ATP stands for Adenosine. It is built by Adenine and Ribose. The “T” stands for Tri-The “P” stands for Phosphate.

Review of warm-up

3 Phosphates are present in one ATP

molecule.

How would you represent the equation in which ATP becomes ADP?

ATP ADP + PiReactant Products

• With a neighbor, fill in the steps in this cycle of Photosynthesis and Respiration.

• We will check your answers when you are done!

Photosynthesis and Respiration

Page 2

Two types of Respiration

1. Anaerobic Cellular Respiration

2. Aerobic Cellular Respiration

Glycolysis takes place in the Glycolysis takes place in the cytoplasmcytoplasm

ATP ATP

P P

ADP ADP

ATP = -2= -2

P

P

Glycolysis takes place in the Glycolysis takes place in the cytoplasmcytoplasm

PP

NAD+

NAD+NADH

NADH

NADH = +2= +2

P

P

Glycolysis takes place in the Glycolysis takes place in the cytoplasmcytoplasm

P

P

ADP

ADP

ATP

ATP

ATP = +2= +2

Glycolysis takes place in the Glycolysis takes place in the cytoplasmcytoplasm

P

P

ADP

ADP

ATP

ATP

ATP = +2= +2

PyruvatePyruvate

What is the net gain of energy in

Glycolysis?

• ATP = + 2

• NADH = + 2

Moving on to the Krebs Cycle

• Enjoy this video clip, and jot down a summary of Krebs’ and Chance’s research.

• Pay attention to the significance of both scientist’s discoveries.

The Krebs Cycle takes place in The Krebs Cycle takes place in the Mitochondrionthe Mitochondrion

NAD+

NAD+NADH

NADH

CoA

CoA

Acetyl CoA

The Krebs Cycle takes place in The Krebs Cycle takes place in the Mitochondrionthe Mitochondrion

CoA Citrate

The Krebs Cycle takes place in The Krebs Cycle takes place in the Mitochondrionthe Mitochondrion

NAD+NADH

The Krebs Cycle takes place in The Krebs Cycle takes place in the Mitochondrionthe Mitochondrion

NAD+NADH

The Krebs Cycle takes place in The Krebs Cycle takes place in the Mitochondrionthe Mitochondrion

P

ADPATP

NADHNAD+

The Krebs Cycle takes place in The Krebs Cycle takes place in the Mitochondrionthe Mitochondrion

FADHFADH2

How much energy did the Krebs Cycle produce?

NADH = +3

ATP = +1

FADH2 = +1

• But there were two molecules of Acetyl CoA that went into the Krebs Cycle…

• How many would be produced in this case?

+6

+2

+2

Where is the energy?

• So far, most of the usable energy from the original glucose molecule is stored in

and

• Where will most of the ATP be made?

The Electron Transport Chain

NADH FADH2