Text Cell Respiration

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Slide1:

Every organism is affected by the things in its environment.

Target:

Target I can describe Cellular Respiration is connected to eating and breathing and explain how Glucose Is converted into useable energy (ATP).

Can we get energy from food? :

Can we get energy from food? Let's answer that question by following a bite of apple. That bite of apple is a mixture of many different things. It contains many things that your body can use: water , vitamins , and minerals . It also contains some things that are useless to you: bits of dirt , bacteria , and tough fibers that your body cannot use.

Slide4:

You take a bite of apple that has all these things in it. You chew and mash them up and mix them with saliva in your mouth. Then you swallow. Let's follow the piece of apple from there…

Slide5:

The apple's is mixed with digestive juices and sent on to your small intestine. There, different parts of your bite of apple go different ways. The useless parts of the apple— the fibers, bacteria, and dirt keep right from the small intestine to the large intestine and then right out of your body: FECES .

Slide6:

What about the useful parts of the apple, though, the water and vitamins and minerals and the energy-containing food that your cells need? Instead of going on to the large intestine, they are carried to all the cells of your body. Do you know what takes them there?

Slide7:

Blood !

Slide8:

Blood carries those useful substances all over your body. A blood vessel passes near every living cell in your body! The cells take the food they need from your blood. Food and other substances go through the walls of your small intestine and into tiny blood vessels.

Slide9:

We tend to think about the big vessels that we can see. But there are millions of tiny blood vessels in our body. If we lined them up end-to-end, they would go twice around the earth ! Why do we need so many tiny blood vessels?

Slide10:

Your cells take the food they need out of your blood. Then they do one of several things with it: Some of the food is used by cells to divide and make how you grow. If you eat more food than you need, some of the food use. Fat is your body's way of storing extra food! new cells. Most of the food that reaches your cells is broken down to supply energy. Explain how a muscle cell in your finger gets the food it needs to give it the energy needed to write this

Slide11:

But the cells cannot use the energy in the food until another substance arrives in the cell. Blood carries food to the cells. That substance is Our cells cannot use the energy stored in food until oxygen combines with food. Then the energy is released.

Slide12:

Oxygen reacts with food to release energy that the cell needs in order to live and do its work. Pumping food into a cell is a little bit like pumping gasoline into a car. The car cannot use the energy in the gasoline tank to move until the engine is started and gasoline is burned. Similarly, the cell cannot use its food energy until oxygen arrives and combines with the food. Using the ideas in this paragraph, explain why we need to breathe.

Why do we breathe?:

Why do we breathe? Many people think that we breathe because we need oxygen to live. They are only partly right. They have not explained why we need oxygen or how the body uses that oxygen. We breathe so that our cells can get oxygen to combine with food. That is how our cells get the energy that is stored in food.

How does oxygen get to all of your cells? :

How does oxygen get to all of your cells? With every breath, your lungs fill up with air. Most that air, including all of the substances that your body doesn't need, you breathe right back out again. But you don't breathe out the OXYGEN that you breathe in. The oxygen stays in your body and goes to all your cells. Do you have an idea how OXYGEN gets to your cells?

Slide15:

Blood !

How does oxygen get to all of your cells? :

How does oxygen get to all of your cells? Blood carries both: FOOD and OXYGEN to your cells! The inside of your lungs is sort of like a sponge. Lungs have lots of tiny spaces for the air to go into, and each one of these spaces is surrounded by tiny blood vessels.

Using what you know… You now know that::

Using what you know… You now know that: 1. All of your cells get their energy by combining FOOD with OXYGEN . 2. FOOD reaches your cells because your blood carries it there 3. OXYGEN reaches your cells because your blood carries it there from your lungs.

Energy is like a fire...:

Energy is like a fire... This is why we eat FOOD Fire requires 2 main ingredients: 1. FUEL 2. OXYGEN This is why we breathe OXYGEN

Ingredients to make energy:

Ingredients to make energy Our energy-making process depends on the breathing system and the digestive system . This is why we eat and breathe . FOOD OXYGEN

Cellular Respiration:

Cellular Respiration Breathing is connected with eating because our cells combine food and oxygen to get energy. Biologists have a name for this process: Cell Respiration. Biologists define respiration like this: Respiration is the process by which cells get energy by combining food and oxygen.

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