An organism that needs to
CONSUME something for food/energy

In order for a heterotroph to obtain energy, plants must undergo photosynthesis, producing glucose for use in cellular respiration.

Ummmm
…Oxygen?

Hello. My name is Saccharomyces
cerevisae! My friends call me
Yeast

NO Oxygen is present!

Glyco = sugar
Lysis = split
Glycolysis =The splitting of Glucose
Glycolysis Animation
Let’s look at that again!

ONLY occurs if Oxygen is not present, causing the pyruvates to stay in the cytoplasm and ferment, or rearranges it into…

LACTIC ACID
That’s me!
And me!
And me!

Hola! It’s me again…

Got it? Let’s see what this looks like!

BUT WHAT IF OXYGEN IS
PRESENT???
Aquila c hrysaetos
I love Oxygen.

Whoo hoo!
We get to practice AEROBIC
Cellular Respiration!
…which is
WAY more efficient!...
Let’s learn more !!!

Remember?

Step 2: The pyruvates enter the mitochondrial matrix, and participate in the Krebs Cycle http://www.bio.miami.edu/~cmallery/150/ma keatp/pyraerobic.jpg
The function of the Krebs
Cycle- to further the breakdown of the products of glycolysisreleasing CO
2 and creating
ATP. NAD + and FAD + are reduced to create NADH and FADH
2
, these molecules are used during the next stage…

Oxidative Phosphorylation occurs on the inner mitochondrial membrane
NADH and FADH
2
(from the Krebs Cycle) are oxidized, releasing H+ that are pumped across the membrane and create ATP…and LOTS of it!
Let’s see what that looks like!