http://www.ck12.org Chapter 3. Chemical Interactions
FIGURE 3.85
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Watch the video about enzymes at the following URL, and then answer the questions below.
http://www.youtube.com/watch?v=870MWm0peRI
MEDIA
Click image to the left for use the URL below.
URL: http://www.ck12.org/flx/render/embeddedobject/82371- In the video, the presenter uses a pair of scissors as an analogy for an enzyme. Identify the active site of the
scissors enzyme, its substrate, and the chemical reaction it catalyzes. - What is the induced fit theory? How does it differ from the lock-and-key model described above?
- Identify two factors that affect how well an enzyme works.
Review
- What are enzymes?
- Why are enzymes needed to catalyze chemical reactions in living things?
- How do enzymes speed up biochemical reactions?
- Describe two human digestive enzymes.