Heterotrophy- a look into Cellular Respiration

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All organisms need a source of energy and a source of Carbon!

An organism that needs to CONSUME something for food/energy

Glucose

Photosynthesis

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

• B.T.W. Autotrophs also carry out cellular respiration because ATP cannot be stored

 C 6 H 12 O 6 + 6 O 6 → 6 CO 2 + 6 H 2 O + ATP

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…

video

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 glycolysis releasing CO 2 and creating ATP. NAD + and FAD + and FADH 2 , these the next stage… are reduced to create NADH molecules are used during

Oxidative Phosphorylation occurs on the inner mitochondrial membrane NADH and FADH it!

2 (from the Krebs Cycle) are oxidized, releasing H+ that are pumped across the membrane and create ATP…and LOTS of Let’s see what that looks like!

ATP synthase

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