By GERARD CHRETIEN BIOLOGY

Cellular Pathways

Several principles govern metabolic pathways in the cell:

A. Complex chemical transformations in the cell do not occur in a single reaction, but in a number of small steps that are connected in a pathway.

B. Each reaction is catalyzed by a specific enzyme.

C. Metabolic pathways is catalyzed by a specific enzyme.

D. Many metabolic pathways are compartmentalized, with certain steps occurring inside an organelle.

E. Metabolic pathways in organisms are regulated by the activities of a few enzyme.


Obtaining Energy and Electrons from Glucose

The most common fuel for living cells is the sugar Glucose.

Cells trap energy while metabolizing glucose

If glucose is burned in a flame, it readily forms carbon dioxide, water, and a lot of energy----but only if oxygen gas(O2) is present. The balance equation for this combustion reaction is:

C6 H12......

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Title: Cellular Functions
Approximate Word Count: 2128
Approximate Pages: 9 (250 words per double-spaced page)

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