Ch.8 - Energy and MetabolismWorksheetSee all chapters
All Chapters
Ch.1 - Introduction to Biology
Ch.2 - Chemistry
Ch.3 - Water
Ch.4 - Carbon
Ch.5 - Biological Molecules
Ch.6 - Cells
Ch.7 - The Membrane
Ch.8 - Energy and Metabolism
Ch.9 - Respiration
Ch.10 - Photosynthesis
Ch.11 - Cell Signaling
Ch.12 - Cell Division
Ch.13 - Meiosis
Ch.14 - Mendelian Genetics
Ch.15 - Chromosomal Theory of Inheritance
Ch.16 - DNA Synthesis
Ch.17 - Gene Expression
Ch.18 - Regulation of Expression
Ch.19 - Viruses
Ch.20 - Biotechnology
Ch.21 - Genomics
Ch.22 - Development
Ch.23 - Evolution by Natural Selection
Ch.24 - Evolution of Populations
Ch.25 - Speciation
Ch.26 - History of Life on Earth
Ch.27 - Phylogeny
Ch.28 - Prokaryotes
Ch.29 - Protists
Ch.30 - Plants
Ch.31 - Fungi
Ch.32 - Overview of Animals
Ch.33 - Invertebrates
Ch.34 - Vertebrates
Ch.35 - Plant Anatomy
Ch.36 - Vascular Plant Transport
Ch.37 - Soil
Ch.38 - Plant Reproduction
Ch.39 - Plant Sensation and Response
Ch.40 - Animal Form and Function
Ch.41 - Digestive System
Ch.42 - Circulatory System
Ch.43 - Immune System
Ch.44 - Osmoregulation and Excretion
Ch.45 - Endocrine System
Ch.46 - Animal Reproduction
Ch.47 - Nervous System
Ch.48 - Sensory Systems
Ch.49 - Muscle Systems
Ch.50 - Ecology
Ch.51 - Animal Behavior
Ch.52 - Population Ecology
Ch.53 - Community Ecology
Ch.54 - Ecosystems
Ch.55 - Conservation Biology
Sections
Thermochemistry
ATP
Enzymes
Metabolism

Solution: Enzymes are divided into six major classes, based on the type of reaction they catalyze. Based on this, in which enzyme do the β-lactamases belong?A. hydrolaseB. oxidoreductaseC. isomerasesD. ligasesE

Problem

Enzymes are divided into six major classes, based on the type of reaction they catalyze. Based on this, in which enzyme do the β-lactamases belong?

A. hydrolase

B. oxidoreductase

C. isomerases

D. ligases

E. lyases

F. transferases

Solution

The 6 classes of enzymes according to the type of reactions they catalyze are the following: oxidoreductase (E.C. 1), transferase (E.C. 2), hydrolase (E.C. 3), lyase, (E.C. 4), isomerase (E.C. 5), and ligase (E.C. 6).

Oxidoreductases catalyze in transfer of electrons (i.e. redox reactions) while transferases catalyze the transfer of functional groups; hydrolases catalyze hydrolysis (breaking down of molecules with the help of water) while lyases are involved in addition/elimination reactions; isomerases lead to isomer formation and ligases involve condensation reactions to form a larger molecule.

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