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Enzyme catalysis

Enzymes

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Biology
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Catalysis
metabolism
Chemical kinetics
Chemical reactions
Enzyme
Product
Substrate
Activation
Regulatory enzyme
Enzyme catalysis

Enzymes Proteins- Enzymes belong to the macromolecule group of proteins and can be described as a specialized type of protein. Enzymes are considered the catalysts of life (catalysts=agents that speed up chemical reactions) - Enzymes are named by what they are acting upon and replacing the ending with ?ase? Ex= cellulose to cellulase Enzymes assist in the process of metabolism= the many chemical reactions that occur in organisms. Many chemical reactions would not occur without enzymes because the molecules in cells would simply not house enough energy/contain enough heat, to begin a reaction and carry it out quick enough. An enzymes job is to lower the activation energy needed in a chemical process and to finish by completing it.

Bio Inquiry Lab on Enzymes

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Biology
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Catalysis
Equilibrium chemistry
Enzyme catalysis
PH
Enzyme
Chemical reaction

Meredith Robbins Inquiry Lab (PH) 10/27/14 Research Question: What conditions would affect the rate of an enzymatic reaction? Null Hypothesis: The Ph and the temperature will not have an effect on the rate of enzymatic reactions. #1 Alternative Hypothesis: The Ph and temperature will have an effect on the rate of enzymatic reactions. #2 Alternative Hypothesis: The Ph and temperature will not have an effect on the rate of enzymatic reactions. Control group: The Ph level of 7 (neutral) Experimental group: Ph- 3, 5, 7, 9, 11 (I will get data for Ph 5 and 7) IV: the Ph level DV: the rate of the enzyme reactions

quiz 9

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Biology
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metabolism
Medicinal chemistry
Chemical reaction
Chemistry
energy
Catabolism
Enzyme catalysis
Enzyme
Catalysis
Forms of energy
Endergonic
Polymer

Which of the following is (are) true of ligand-gated ion channels? a. They lead to changes in sodium and calcium concentrations in cells. b. They are important in the nervous system. c. They open or close in response to a chemical signal. d. Only A and B are true. e. A, B, and C are true. Which of the following can affect the rate of an enzymatic reaction a. pH b. temperature c. feedback inhibition d. A and B e. A, B and C A competitive inhibitor binds to an enzyme's a. active site b. allosteric binding site c. cooperative binding site d. A and B e. A, B and C Enzymes speed up chemical reactions by a. raising the energy of activation b. lowering the energy of activation c. lowering free energy d. increasing free energy e. B & D

BIO CH 8

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Biology
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metabolism
Catalysis
cellular respiration
Chemical reactions
Exercise physiology
Product
Enzyme catalysis
Enzyme
Adenosine triphosphate
Endergonic reaction
ATP hydrolysis
energy

Campbell's Biology, 9e (Reece et al.) Chapter 8 An Introduction to Metabolism This chapter lays the foundations for the chapters on respiration and photosynthesis. Key concepts are as follows: The laws of thermodynamics govern energy transformations by living organisms, metabolic reactions couple energy-harvesting reactions to reactions that accomplish cellular work, and enzymes increase the rates of reaction. Understanding the properties of enzymes, how they work, and how their activities are regulated is necessary to achieve an understanding of metabolic pathways. Multiple-Choice Questions 1) Which term most precisely describes the cellular process of breaking down large molecules into smaller ones? A) catalysis B) metabolism C) anabolism D) dehydration E) catabolism
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