DO NOW1. What does photosynthesis produce?

2. Why are the products important?

3. Where do the ingredients needed for photosynthesis come from?

Cellular RespirationHarvesting Chemical Energy

ATP

ATP

Cellular Respiration Cellular Respiration – Biochemical process that releases the chemical

energy stored in glucose and stores the energy in ATP. Occurs in the mitochondria!

The energy released from glucose is temporarily stored in the bonds of ATP. This energy is used for all life functions in all organisms.

Photosynthesis allows respiration to occur

Photosynthesis: CO2 + H20 + light C6H12O6 + O2

How does photosynthesis allow respiration to occur? The products of photosynthesis allow respiration to happen! Photosynthesis gives organisms:

1. Glucose (stored energy)2. Oxygen (helps release stored energy)

ProductsReactants

Photosynthesis and RespirationBoth rely on each other

Photosynthesis stores the Sun’s energy in glucose and releases oxygen as waste. BOTH plants and animals (including us) use glucose and oxygen for cellular respiration!

Photosynthesis uses the products of respiration!

Respiration uses the produces of photosynthesis!

Complete the Photosynthesis and Cellular Respiration Diagram

Respiration Equation

Respiration (oxygen present):

Glucose + Oxygen ATP + Carbon Dioxide + Water

C6H12O6 + O2 ATP + CO2 + H2O

Photosynthesis?Carbon Dioxide + Water + Light Glucose + Oxygen

Compare and Contrast Cellular Respiration and Photosynthesis

Photosynthesis Cellular Respiration

Compare and Contrast Cellular Respiration and Photosynthesis

Photosynthesis Respiration

Function/purpose

What’s needed?

What’s produced?

Cell organelle

Which organisms carry it out?

Equation

DO NOW (2)

1. Where do organic food molecules, such as glucose, with stored energy come from?

2. Where does cellular respiration take place in a cell?

3. Why is cellular respiration necessary to sustain life?

4. What is the equation for cellular respiration?

Regents Questions

Two Forms of Cellular Respiration

1. Aerobic Respiration:

2. Anaerobic Respiration:

What is the purpose of cellular respiration?

Which type of cellular respiration do you think is more efficient?

Aerobic RespirationForm of cellular respiration carried out by cells in the presence of oxygen. • Occurs in mitochondria • Purpose is to release the energy stored in organic molecules

and form ATP (ready-to-use energy)• Uses Oxygen to release the maximum amount of energy

stored in organic food • For this reason, aerobic respiration is much more efficient

at making ATP than anaerobic respiration.

Equation:Glucose + Oxygen 36ATP + Carbon Dioxide + Water

Anaerobic Cellular Respiration Form of cellular respiration carried out by cells in the absence of oxygen. • Occurs in cell mitochondria • Purpose is to release the energy stored in organic molecules

and form ATP (ready-to-use energy)• Used by certain bacteria and yeasts (fungi)• Humans also use anaerobic cellular respiration • Process used to make cheese, yogurt, baked goods, brewed

goods and wines.

Two types

Anaerobic Respiration

1. Alcohol fermentation– Type of anaerobic respiration where ethyl alcohol

is produced as a product – Glucose 2ATP + Carbon Dioxide + Ethyl alcohol

– Certain fungi (yeasts) perform this… giving us beer and wine

Without mitochondria and anaerobic respiration… there would be no alcohol.

Anaerobic Respiration 2. Lactic Acid formation– Type of anaerobic respiration which produces lactic acid as

one of its products

– Glucose 2ATP + Carbon Dioxide + lactic acid

– In humans, during strenuous exercise, not enough oxygen is present in the blood (oxygen debt)

– Lactic acid accumulates in muscles; leads to fatigue and pain

Pain is not weakness leaving the body, pain is…

Disclaimer

Both types of anaerobic respiration are considered

inefficient. The end products of both (ethyl alcohol

and lactic acid) contain lots of energy that has not

been effectively released for use by the cell.

Compare and ContrastAerobic Respiration Same Anaerobic Respiration