Need Biology help!!?

Question

I am having trouble answering these questions, and I really need some help!

1.. How is Oxygen important to the release of energy?

2.. What is the difference in energy release between starting the metabolic pathway with glucose as compared to glucose obtained from starch?

3. How many ATP are produced for every glucose molecule that undergoes fermentation?

4. How many ATP are produced for every glucose molecule that undergoes complete aerobic breakdown?

Any help would be greatly appreciated, even if it's pointing me in the direction on where to find the answers(in layman's terms)!

I am not a kid, btw, I am an adult, who really needs help :)

Thanks!!

I have read the text, and it doesn't seem to explain it very well. I also read "Biology For Dummies"- and again, doesn't really answer the question.
I've tried Google, college websites, but nothing seems to help.. I am so frustrated!
And this is Grade 11 Biology!

Man, I feel so old....

Answer 1

Have you read your Biology book?
Sounds like you might need to do a lab to get some of these answers.
Try typing in the keywords into Ask.com if you really are willing to do the research.
However, you should not be required to answer these questions unless you have been assigned some serious reading from your textbook.

Answer 2

1. oxygen is an electron acceptor. Remember the electron transport chain and the protons it pumps? The electrons need to end up somewhere, which is what oxygen does, forming H2O (H2O2 to be very accurate).

2. Nothing that I can think of...glucose is inputted at the same part of glycolysis whether it's from starch or from glucose. Amylase breaks down glucose, but it doesn't require ATP...

3. 2. 4 ATP produced - 2 ATP.

4. Theoretical max output is 38. But some ATP is needed for various transport mechanisms (import/export at the mitochondrial membrane), but you'll find different numbers for "net" production (even fractions); it's about 30.

The key to understanding respiration is having a good biochemical pathway diagram. You really don't even need the text after you understand the diagram.

Answer 3

1) oxygen is important to the release of energy as when you begin exercise you are using anaerobic respiration this type of exercise is performed with little to no oxygen which causes a build up of lactic acid. This build up results in the brain signalling us to begin increases oxygen intake. This acts as a turbo charger. From there oxygen with glucose travels through the body into its cells and from there into the mitochondria where it is able to "react" and great more ATP supplies.

Equation:
Glucose + Oxygen = Carbon dioxide + water + 36-38 ATP (/energy).

2) No idea

3) Fermination also known as anaerobic respiration produces 2 ATP

4) 36-38 ATP

Answer 4

See if any of these click with you. There are many sites expressing the concepts in different ways.
Energy accounting
http://muscle.ucsd.edu/musintro/glucose.shtml
Recorded lecture
http://wps.prenhall.com/esm_freeman_biosci_1/0,6452,498583-,00.html
http://faculty.clintoncc.suny.edu/faculty/Michael.Gregory/files/Bio%20101/Bio%20101%20Lectures/Cellular%20Respiration/cellular.htm
http://staff.jccc.net/PDECELL/cellresp/respintro.html
http://tx.essortment.com/cellularrespira_rmpr.htm
Notes & highlights
http://www.mcsoh.org/mhs/science/VanFleet/Regular%20Biology/Cellular%20Rspiration%20Notes.html