LabmanualTest2

LabmanualTest2 - Biolab Test 2 A Enzymes Exercise 11 a Enzymes proteins that control most reactions in cells are biocatalysts i Lower the

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Biolab Test 2 A. Enzymes Exercise 11 a. Enzymes-  proteins that control most reactions in cells, are biocatalysts i. Lower the activation energy needed for a reaction to occur ii. Enzymes bind to  substrates  (reacting molecule) to form an  enzyme-substrate complex iii. Chemical bonds are distorted/stressed to form a  transition state - the substrate becomes more reactive and the metabolic reaction accelerates iv. Energy of activation - energy needed to form the transition state v. Active site - site of attachment and the surrounding parts of the enzyme that stress the substrate’s bonds vi. Enzyme + Substrate -> Enzyme-substrate complex -> enzyme + product vii. Denature - loss of  a proteins 3 dimensional structure, loss of biological function most of the time viii. Optimal condition - range of values for environmental factors such as temperature and pH at which an enzyme functions best b. Biocatalyst-  accelerate metabolic reactions to biologically useful rates c. When fruit is bruised, injured cells release catechol and catechol oxidase d. Catachol oxidase  (the turnip extract)- plant enzyme that oxidizes catachol and converts it to benzoquinone (prevents decay in damaged cell; toxic to bacteria) i. Catechol (substrate –Catechol oxidase(enzyme)  benzoquinone e. 40 C optimal f. Catalase - enzyme in plants and animals that speeds up the breakdown of hydrogen peroxide, toxic to cells i. 2H 2 O 2  –catalase
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 04/03/2008 for the course BIO 1 taught by Professor Rush during the Fall '07 term at Baylor.

Page1 / 2

LabmanualTest2 - Biolab Test 2 A Enzymes Exercise 11 a Enzymes proteins that control most reactions in cells are biocatalysts i Lower the

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online