10-27-16 Warm up1. How do we get the

energy we need? 2. What group of

organisms makes this for us (and most other living things)?

10-27-16

Warm upMitochondria Lesson

Cancelled: quiz tomorrow

As always…

Key concepts are underlined

Vocabulary terms will be in green

How cells use GLUCOSE

Your goal

Explain what happens to food energy in cells

On your whiteboard

What are the 7 characteristics of life?How many can you remember?

– All living things are made of cells– All living things have DNA– All living things reproduce

– All living things use materials and energy– All living things grow and develop

– All living things respond to their environment– All living things maintain homeostasis

You already know this! :)

Equation for photosynthesis:

H2O + CO2 ----------------> C6H12O6 + O2

water + carbon dioxide ------------------> + oxygen

Light energy

Light energyglucose

So what is glucose?

Divide your whiteboard into 3 columnsFill in the information about glucose

Chemical formula

Complete the sentence: “Glucose is used for_______”

Complete the sentence: “Glucose is a ______”

The following 6 slides

Are a review of macromolecules – it’s been a long time

Identifying the 4 Organic Macromolecules

1.1. CarbohydratesCarbohydratesThese are BIG molecules -

macromoleculesThey are polymers made up of

many simple, repeating monomers

The monomers monomers of carbohydrates areare…

SUGARSSUGARS called monosaccharidesmonosaccharides

Quick Check - Whiteboards• A carbohydrate…is it a monomer or a

polymer?

Quick Check - whiteboards• Simple sugar - monosaccharide…is it a

monomer or a polymer?

Practice Drawing it - whiteboards• Draw a monomer of a carbohydrate

• Write the name of the monomer you drew

or monosaccharide

simple sugar

glucose

fructose

Carbohydrates• An important simple sugar is glucoseAn important simple sugar is glucose

carbohydrates

Monomer: Simple Sugar

Compound: Carbohydrate

Living things use food to get the materials and energy they need

But cells can’t use food molecules like glucose directly for energyThe mitochondria FIRST turns food energy into a form of energy the cell can use directly.

ATP

Mitochondria break down glucose and convert the food energy into lots of ATP during cellular respirationATP is the form of energy that is useful to cells

ATP

ATP

ATP

ATP

ATP

ATP

It’s kind of like a gumball machine

Food energy is like dollar billsLots of energy - but too big for cells to use directlyThe mitochondria can change the Big food energy into a usable form

Quick Check – on your whiteboard

In my analogy:What does the dollar bill represent?What do the pennies represent?What does the gumball machine represent?Try to think of another analogy - something large that must be broken into smaller pieces to be useful

The steps

1 - glucose enters the cell2 - the cell breaks glucose in ½ and makes a little ATP3 - the mitochondria breaks the ½ sugar the rest of the way down to release all the energy in it4 - the energy released from glucose is stored in ATP5 - ATP can now power the work of the cell

You try

Work with the person sitting next to youTry to arrange the cards in the correct order

–From glucose to ATP

ATP

ATP ATP

You try

Fill in the blanksThen we will read it aloud

FILL in the BLANKS then READ ALOUD

• Cells use food molecules like ________ for energy. But these molecules must first be broken down by the _________. The energy in glucose can then be _____ in molecules of _____. ATP is a useful form of _______ for cells.

Word bank:• Energy• Glucose

• ATP• Mitochondria

• Stored

Practice Questions – with your neighbor

Choose the correct answerExplain WHY it is correct

Choose an answer and explain why you chose it

The role of the mitochondria is toa. Convert light energy into chemical energyb. Convert chemical energy to light energyc. Convert the chemical energy of food into

the chemical energy of ATPd. Convert ATP energy into a form that is

useful to cells

Choose an answer and explain why you chose it

The work of cells is powered byA. ATPB. Food moleculesC. Glucose moleculesD. Mitochondria

Researchers noticed that certain cells have many mitochondria, more than other cells they have observed.

What kind of cells would have high numbers of mitochondria and why?

We need lots of ATP to run this fast!

Why do cells need ATP to do work?

Can’t store ATP– Too unstable– Can only be used in

the cell that made it– Only short term

energy storage

Carbohydrates and lipids are for long-term energy storage

So our goal was to…

Explain what happens to food energy in cells.

Do you know?

Your turn Choose 1 of the following tasks

Task 1: Create a flow chart that outlines what happens to food energy in cells– Make sure to use these

words in your response: foodfood, glucose, glucose, mitochondria, ATP, mitochondria, ATP, energy, energy, stored, stored, releasedreleased

Task 2: Draw and label a diagram that shows what happens to food energy in cells– Be sure to include:

mitochondria, mitochondria, food, glucose food, glucose molecule, ATP molecule, ATP molecules, molecules, energy energy stored, energy stored, energy released.released.

Please complete the EdPuzzle assignment in Google Classroom