Cell EnergyPhotosynthesis vs Cell Respiration

1 Minute Quick Write

What do plants need naturally to survive?

Notice the illustrations of the plant leaf below.What plant cell organelle do you recognize?

Chloroplast

• Chloroplasts are present in plant cells.

• They capture the light energy from the sun and convert it into chemical energy (food molecules called glucose, C6H12O6).

• That process is called Photosynthesis

Let’s figure out the equation for Photosynthesis?

According to the chloroplast diagram to the left….

• What is the chloroplast taking in (the reactants)?

The same as what we said plants need to survive

• What is the chloroplast producing or giving off (the products)?

Glucose(C6H12O6 )

Use your manipulatives to create the equation for photosynthesis

(Place the correct name of the molecule below it in the equation and make sure your equation is balanced using the correct coefficients)

Reactants Products

Write out your correct balanced equation of photosynthesis.

Does your equation look like the one below?

Check your understandingExplain the process of Photosynthesis to

a neighbor using the following terms :

carbon dioxide light energy

glucose food

oxygen gas

process water

chloroplast plants

Write out your explanation using the above terms.

There is a saying “If you talk to a plant, the plant will grow”

Explain, to a neighbor, how the phrase above is relevant and what

process is taking place.

Think Pair Share

AcrosticWrite a word for each letter of the word photosynthesis that relates to the topic

P

H

O

T

O

S

Y

N

T

H

E

S

I

S

Cellular Respiration

Review of Photosynthesis

Before we go into cellular respiration, let’s review what happens in the process of photosynthesis.

(use the words of your manipulative)

Let’s take a look at how plants and other cells use the

glucose that is produced.

Energy is packaged in glucose during the process of photosynthesis. However, the glucose molecule is bound together. Do you think cells can use this glucose in its current form?

NoSo what has to happen to the glucose, if it is bound together, in order for cells to use it?

The bond has to be broken and a more useable form of energy should be produced.

GLUCOSE( C6H12O6 )

OSE12O6 )

GLUC

( C6H

OSE12O6 )

GLUC ( C6H

OSE12O6 )

GLUC

( C6H

ENERGYATP

(Adenosine Triphosphate)

If glucose is used and energy in the form of ATP is produced, in which cell organelle do you think cellular respiration takes place?

mitochondria

What types of cells have mitochondria? animal cells, plant cells, fungus cells & protist

cells

Mitochondria

• Mitochondria convert chemical energy stored in food molecules (glucose, C6H12O6 ) into energy (ATP) that is more convenient for the cell to use.

• This process is called Cellular Respiration

Now we are going to build our equation for Cellular Respiration

using the same manipulative.

Manipulative

Place your arrow in the center of the equation. What do we start the reaction with?

If glucose is being used and energy in the form of ATP is produced, place those two word pieces of your manipulative on the correct side of the arrow.

Place the remaining word pieces on the side of the equation you think they should go.

C6H12O6 + 6O2    6CO2 + 6H2O + ATP

Does your Cellular Respirationformula look like this one?

(energy for the cell touse for other processes)

What will the cell use the ATP for?

Name some specific process of the cell.

In your own words, explain what you think this analogy is saying?

Check your understanding

Why do you think cells under go the process of cellular respiration?

Explain the process of cellular respiration using the following terms:

carbon dioxide food molecules

glucose cells

oxygen gas

process ATP

Mitochondria water

Going further into Cellular Respiration

Complete the following chart

Description of Process Reactants Products

Photosynthesis

Cellular Respiration

What do you notice about the reactant and products of cellular respiration in comparison to the reactant and products of photosynthesis?

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