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Name ____________________________________   

Internet Activity: Cellular Respiration and Fermentation

Directions:  Go to:  http://biology.clc.uc.edu/Courses/bio104/cellresp.htm to complete the following statements.

1. Two important ways a cell can harvest energy from food are: _____________________________ and ________________________.

2. The first step in both process is called __________________________,

which is the breakdown or splitting of ___________________ (6 carbons)

into two 3-carbon molecules called _________________________.

3. _________________________ is the oldest known way to produce ATP

(adenosine triphosphate) which is energy. There is evidence that the

process of glycolysis predates the existence of _________________ in 

the Earth’s atmosphere and the organelles in cells.

4. Glycolysis does not need __________________________. It occurs in the

___________________ of the cell.

5. Two of the most common types of fermentation are

_____________________________ and _________________________.

6. Lactic acid fermentation is done by some _______________________,

___________________________, and sometimes our _____________.

7. Normally our cells do ____________________ respiration like the rest of

our bodies; however, under greater exertion when the oxygen supplies by

our lungs and blood can’t keep pup with our muscle’s needs, our muscles

do ___________________________ fermentation.

8. It is the ________________________ in yogurt that gives it its sour taste,

and the presence of lactic acid in our _________________________ that  can make them so sore.

9. Alcohol fermentation is done by ____________________ and some kinds of ______________________.

10. The “waste” products of fermentation are _______________________ and ______________________________.

11. Humans have taken advantage of this process in making __________________, beer, and wine.

12. In bread making it is the _________ that makes the bread rise and the _________________ that gives it its wonderful smell while baking.

13. In beer and wine making, the ethanol gives the alcohol property and carbon dioxide makes the beverages ____________________________.

14. There are three steps in the process of cellular respiration:

      __________________ ___________________ ___________________

14. The ____________________________ are like the engines in our cells where ____________________ is burned for fuel and the wastes are carbon dioxide and water.

17. The electron transport chain is a system of electron carriers embedded into the inner membrane of a ________________________________.

18. Many of the compounds that make up the electron transport chain belong to a special group of chemicals called __________________________________.

19.  The central structure of a cytochrome is a  _______________________

that has an iron center called a heme group, and these are also found in

            the ___________________________________ of our blood.

20. Porphyria is a dominant ______________________________ in which the person’s body cannot properly make porphyrin rings.