Enzymes. Our guiding question: How do chemical bonds get made and broken in a cell?. Questions-notes on enzymes. 1. List 4 properties of enzymes What is the difference in a reaction with or without an enzyme? Can an enzyme help only one reaction? Explain why-why not.
Our guiding question:
1. List 4 properties of enzymes
Follow the interactive animations at the following website to answer the questions about enzyme properties.
4) Enzyme shape is changed (stop working because of shape change) when they are heated or placed in acid (denatured).
1) Structural – proteins that form physical parts:
-keratin (hair and nails)
-microtubules (cell membrane skeletons).
-Signaling – e.g. some hormones are proteins
-Defense – antibodies that recognize foreign invaders
-Transport – Carrier proteins (e.g. hemoglobin carries O2)
-Enzymes – used for chemical reactions (e.g. lactase hydrolyses lactose)
Example - Fibrous proteins are long and thin, and are used for structure [e.g. collagen]
Example - Enzymes also have a specific shape to recognize a specific substrate [vocabulary] [e.g. lactase]