TEACHER NOTES: CELLULAR RESPIRATION

Where to humans get the building blocks (atoms) and energy needed to grow and develop?From the food we eat!

What kind of “energy” is in the food we eat? Guess your answer ______CHEMICAL___________Where did that energy come from originally? Guess your answer ______THE SUN___________

PHOTOSYNTHESIS The process by which plant convert light energy into chemical energy in the form of

carbohydrate (sugar). 6CO2 + 6H2O (with light energy) C6H12O6 + 6O2

Notes on energy video:

The process of turning the chemical energy stored in food in to a form that can be used by organisms is called: CELLULAR RESPIRATION

“The process in which sugars (glucose) are converted into usable energy (ATP).

When you eat, your body breaks down the giant food molecules into simple, smaller molecules that can be processed inside the cells.

Glucose is the simple, small molecule used for cellular respiration

When the carbohydrate molecules are the right size, a glucose, they are brought into the MITOCHONDRIA of the cell.

Oxygen is used to break the glucose down even more, releasing an energy called ATP. The ATP can be used right away, or stored for later use by the cell.

Glucose = C6H12O6

When the mitochondria breaks the molecule apart, there are Carbon, Hydrogen and Oxygen atoms that are free to re-arrange into new molecules.

Can you guess what NEW molecules are formed?

Can you predict what the chemical equation would be for Cellular Respiration?

What formula does this remind you of? Are they related?

Cellular respiration is like the mirror image of photosynthesis1. Chemical equation for cellular respiration is basically the

reverse of that for photosynthesis. 2. Structures in chloroplasts and mitochondria are similar

What organisms perform cellular respiration? How can you tell by looking at the cells of plants and animals?

Animals AND plants BOTH perform cellular respiration because they both have mitochondria and need energy

Is cellular respiration the same as breathing? Write down at least one similarity between them…. Both involve taking in O2 and in releasing CO2

Write down at least two differences between them….Breathing happens in the lungs only. Cellular respiration happens in EVERY CELL of the organism (including plants). Cellular respiration releases energy for the cell to use

Breathing occurs so oxygen can get to the cells for cellular respiration to happen! (and for a way to get rid of the excess CO2

What happens to the rest of the food that we eat, that does not break down into glucose?

The food atoms help build your cells so you can grow, develop and survive!

What happens if your body needs energy, but you can’t get enough oxygen in for cellular respiration to occur like it should?

Have your PE teachers taught you the difference between an “aerobic” exercise and “anaerobic” exercises? What was the difference?

Aerobic = with oxygen

Anaerobic = without oxygen

At times, there is not enough oxygen for aerobic respiration to take place. In this circumstance, respiration continues without oxygen in a process known as anaerobic respiration.

Glucose lactic acid + energy

What are the top 2 disadvantages of anaerobic respiration?1. less energy is produced2. Lactic acid is produced which causes muscle fatigue

When cells make energy without using oxygen, the process is called FERMENTATIONFermentation does not release as much energy from sugar as regular cellular respiration does.

Types of FermentationThere are 2 types of fermentation:

Alcoholic – produces alcohol, CO2 and energy. Examples: yeast (the CO2 released causes bread to rise), wine and beer making

Lactic Acid= produces lactic acid and energy. Example: in animal muscles- causes muscle cramps because your body needed to produce energy faster than you could take in oxygen.

NOTES: CELLULAR RESPIRATION

Where to humans get the building blocks (atoms) and energy needed to grow and develop?

What kind of “energy” is in the food we eat? Guess your answer _________________Where did that energy come from originally? Guess your answer _________________

_____________________________ The process by which plant convert _____________ energy into ____________ energy

in the form of carbohydrate (sugar). 6CO2 + 6H2O (with light energy) C6H12O6 + 6O2

Notes on energy video:

The process of turning the chemical energy stored in food in to a form that can be used by organisms is called: ___________________________________

“The process in which sugars (glucose) are converted into usable energy (ATP).

When you eat, your body _______________________ the giant food molecules into simple, smaller molecules that can be processed inside the cells.

___________ is the simple, small molecule used for cellular respiration

When the carbohydrate molecules are the right size, a glucose, they are brought into the ___________________________________ of the cell.

_______________ is used to break the glucose down even more, releasing an energy called _________. The ATP can be used right away, or stored for later use by the cell.

Glucose = ________________________ When the mitochondria breaks the

molecule apart, there are Carbon, Hydrogen and Oxygen atoms that are free to re-arrange into new molecules.

Can you guess what NEW molecules are formed?

Can you predict what the chemical equation would be for Cellular Respiration?

What formula does this remind you of? Are they related?

Cellular respiration is like the mirror image of photosynthesis1. Chemical equation for cellular respiration is basically the

reverse of that for photosynthesis. 2. Structures in chloroplasts and mitochondria are similar

What organisms perform cellular respiration? How can you tell by looking at the cells of plants and animals?

Animals AND plants ____________________ cellular respiration because they both have _________________________and need energy

Is cellular respiration the same as breathing? Write down at least one similarity between them….

Write down at least two differences between them….

Breathing occurs so ______________ can get to the cells for cellular respiration to happen! (and for a way to get rid of the excess CO2)

What happens to the rest of the food that we eat, that does not break down into glucose?

The food __________________ help build your cells so you can ________, develop and survive!

What happens if your body needs energy, but you can’t get enough oxygen in for cellular respiration to occur like it should?

Have your PE teachers taught you the difference between an “aerobic” exercise and “anaerobic” exercises? What was the difference?

Aerobic = _______________________

Anaerobic = _____________________

At times, there is not enough ________________ for aerobic respiration to take place. In this circumstance, respiration continues without O2 in a process known as anaerobic respiration.

Glucose lactic acid + energy

What are the main disadvantages of anaerobic respiration?1. 2. 3.4.When cells make energy without using oxygen, the process is called _____________________Fermentation does not release as much energy from sugar as regular cellular respiration does.

Types of FermentationThere are 2 types of fermentation:

_______________ – produces alcohol, CO2 and energy. Examples: yeast (the CO2 released causes bread to rise), wine and beer making

_________________= produces lactic acid and energy. Example: in animal muscles- causes muscle cramps because your body needed to produce energy faster than you could take in oxygen.