Science

April 29April 30

Today’s Agenda…

• We have dispersals today with Mr. Canosa’s class• You will be using a chromebook today to get your

information• You will be assigned a specific number to use in

this classroom• You will go through the powerpoint to get all

information• With 20 minutes left in class we will review all

the notes together

Today’s Agenda…

• If you do not know how to get to my wiki page WRITE THESE STEPS DOWN NOW!

• 1. Go to James Martin Middle school website• 2. Click on faculty / staff• 3. Click on Tracy Maas globe icon• 4. click on 2014-2015 lessons tab• 5. Select powerpoint for Respiration April 29 & 30

Today’s Agenda…

• Before getting your chromebook, everyone will turn their chairs around so your backs are to me

• We will do this by rows now!• Remember you are not talking today…. You

are getting the information from the wiki page and taking notes into your notebook

• We will review at the end of class

Warm Up

1. Atoms are mostly made up of:1. Calcium2. Empty space3. Cells 4. Water

2. What is the difference between mass and volume? 1. There is no difference between mass and volume. 2. Mass is the amount of space it takes up and volume is the

amount of stuff it is made of . 3. Mass is what color it is and volume is how loud it is. 4. Mass is the amount of stuff it is made of and volume is the

amount space it takes up.

Let’s check our understanding…

• Explain each concept below in your own words:• Photosynthesis• Chloroplast and chlorophyll• Leaf structure (stomata and guard cells) • Transpiration (part of water cycle)

Chlorophyll In leaves

Glucose –foodfor plant

PRODUCTS

REACTANTS

DRAW PHOTOSYNTHESIS

Water vapor

Draw a Chloroplast …

Draw a leaf….

WAXY CUTICLE

LEAF

EPIDERMIS

CHLOROPLASTS

GUARD CELLS

STOMATA

Draw Transpiration….

Introduction to Cellular Respiration:

As humans, we can only hold our breath for so long…..Pinch your nose shut, and see how long you can hold your breath

• Why did you eventually have to breathe out and then in?

WRITE IN NOTEBOOK…

• We need O₂ for 2 reasons…• Respiration: Using our lungs to breathe

in oxygen and breathe out carbon dioxide

• Cellular Respiration: A chemical reaction within our cells which uses oxygen to break down stored energy from glucose

So what happens when you breathe? Write in notebook

BUT IT’S NOT THIS SIMPLE….

Oxygen (O2) goes in

Carbon dioxide (CO2) goes out

Today’s investigation!

• Today we are going to investigate how respiration (in plant and animal cells) is related to photosynthesis….

Respiration is the opposite of Photosynthesis! Write in notebook

Respiration – Write in Notebook• Respiration is the process that breaks

down sugar to make energy. It happens in animal cells and plant cells.

• Cellular Respiration Equation:

Reactants (what goes in)

Oxygen + Sugar (O2) (C6H12O6)

Products (what comes out)

Water + Carbon Dioxide(H2O) (CO2)

+ ENERGY!!

Water + Carbon Dioxide(H2O) (CO2)

+ ENERGY!!

So where does all this oxygen come from??

• Remember, it is due to green plants doing PHOTOSYNTHESIS!

Write in notebook the 2 statements that are true?

1. Photosynthesis is like respiration in reverse

2. Photosynthesis produces CO23. Photosynthesis needs sunlight

Were you right? TWO statements that are true are highlighted in red

1. Photosynthesis is like respiration in reverse

2. Photosynthesis produces CO23. Photosynthesis needs sunlight

Discovery Education Videos…

• Record these questions below before watching the videos….(leave space to record your answers)

• 1. What is breathing?• 2. What is respiration?• 3. What happens to glucose in the presence of

oxygen? • 4. How are photosynthesis and cellular

respiration related?

Discovery Education…• You are going to watch 2 videos on Discovery Education• Log in to your account using the following steps:• 1. type in discovery education in a search box• 2. log in username: cms student id# _ cms

password: cms student id #• Select the Science techbook• Select the Essential Living Processes – Cellular respiration• Select the Engage tab: from here you will watch 2 videos

• Breathing vs. Respiration video• Cellular Respiration video

Video on Cellular Respiration in plants

• https://www.youtube.com/watch?v=yxHZH0P5aKI

• In lima beans if time permits

Discovery Ed Video• Follow up Questions: 1. What happens to glucose in the presence of oxygen? 2. Oxygen helps break down glucose so it can be used by

cells for energy3. How are photosynthesis and cellular respiration related? 4. They are opposite reactions; the products of

photosynthesis are the reactants of cellular respiration

Make a foldable…

• Fold your notebook paper in half (hotdog style)• Draw a line down the center fold• Label Left Side: Photosynthesis• Label Right Side: Cellular Respiration• You should have two columns in your notebook

(see the next slide)

Photosynthesis Cellular Respiration

Raise your hand now…

• You will receive a handout with a series of statements

• After reading each statement you must decide if the statement relates to photosynthesis or cellular respiration…..

• Good Luck…these are hard so think, think, think!