Matter & Energy Flow in Organisms 8.1.3

Go to the Padlet and choose a term and give:

- a definition of the term
- a picture that represents the term

​
Terms: photosynthesis, cellular respiration, chlorophyll, kinetic energy, law of conservation of mass

VOCAB

Home

Open in new tab

Copy link

Matter & Energy Flow in Organisms

Lesson 8.1.3

​Notebook
Page 72

Multiple Choice

Photosynthesis and cellular respiration are chemical reactions that are ___________________.

• exactly the same

• are opposite each other

• similar but not exact

Remember that Photosynthesis and Cellular Respiration are a cycle or circle!

This model shows a different look:
1- No coefficients in formulas so does not follow conservation of mass
2- Organelles where processes occur are included
3- The name of each process is included

Multiple Choice

Which of the two models is ok to use to show how photosynthesis and cellular respiration are connected?

• first one

• second one

• Neither

• Both

Plants perform both photosynthesis (they have chlorophyll) and cellular respiration (mitochondria) so can do BOTH within the same plant!
The products and reactants move between the mitochondria and chloroplasts in the same plant cell.

​In Plants

We cannot perform photosynthesis since we do not have chlorophyll (we are not green).
We eat food to gain glucose for energy, like eating carrots! The glucose from the carrots enters our body and we use it to perform cellular respiration.

​

​Humans & Animals

​We eat food and our body breaks it down into glucose to be sent to our cells.

Food Enters our Body

Our lungs take in air and then sends the oxygen through our blood stream to the cells.

Breathe in Air

​Mitochondria take in the oxygen and glucose to produce ATP, water, and carbon dioxide.

Mitochondria

​As we exhale the water and carbon dioxide created during cellular respiration is sent out of our body.

​​Exhale

​Cellular Respiration

​The carbon dioxide given off by humans and animals are obtained by plants through their stomata.

Carbon Dioxide

​Water in the soil is taken up through the plants roots.

​​Water

​The sun's rays are absorbed by the chlorophyll in the leaves of plants.

​​Sun

​The CO₂, water and sun combine to create photosynthesis. The product of photosynthesis is glucose, water, and oxygen. Water and oxygen get released through the stomata.

Products

​Photosynthesis

Multiple Choice

The same atoms can cycle constantly between photosynthesis and cellular respiration.

• True

• False

Multiple Choice

How do plants obtain carbon atoms to use during photosynthesis?

• Carbon dioxide enters through the stomata of leaves.

• Water enters through the stomata of leaves.

• Plants absorb carbon dioxide through their roots.

• Plants absorb water through their roots.

​Something that enters the process

Input

​Something that exits a process

Output

​In a system...

Sunlight provides the energy that plants need to start photosynthesis. The pigment in chlorophyll absorbs the light energy.

​​Energy Input

​-Photosynthesis converts kinetic light energy into a glucose molecule.
- It is stored in bonds between atoms.
- Extra light energy is converted to heat.

Energy Output

​Photosynthesis

​Glucose molecules carry energy into cellular respiration.
Sugar has chemical energy!

​​Cellular Respiration INput

​Cellular respiration transfers chemical energy from glucose to ATP. Cells release the energy and convert it into kinetic energy to do work, like growing and responding to its environment.
If it is not converted to kinetic energy it is released as heat

​​Cellular Respiration Output

​Cellular Respiration

Categorize

Options (4)

Kinetic energy and Heat

Chemical Energy

Chemical Energy and Heat

Light Energy

Classify each type of energy according to their role in photosynthesis and cellular respiration.

Photosynthesis Input

Photosynthesis Output

Cellular Respiration Input

Cellular Respiration Output

As you watch the video, think about the PATH the ENERGY TRAVELS as it moves from the Sun to organisms on Earth.

Track the ENERGY FLOW!!!

​

​Let's Watch a Video.....

Draw

Do your best to draw and label how the energy flows in photosynthesis and cellular respiration!

Remember:
- Tomorrow is the ELA Benchmark!
- Wednesday is an Assignment on Carbon Flow in Organisms

​ - NO SCHOOL on FRIDAY - SPRING BREAK!

Great Job Today!