Ch.9 - RespirationWorksheetSee 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

Concept #1: Redox Reactions and Electron Carriers

Concept #2: Electron Transport Chains and Energy

Oxidation and reduction reactions are chemical processes that result in a gain or loss in a. atoms b. neutrons c. electrons d. molecules e. protons
When an atom or molecule gains one or more electrons, it is said to be a. energized b. oxidized c. polarized d. activated e. reduced
The term oxidation is derived from the name of the element oxygen. This is reasonable, because it a. attracts electrons very strongly b. can be oxidized by accepting electrons c. contains more electrons than are needed d. can react chemically readily in its gas state e. is present everywhere
Redox reactions involving cytochromes take place ini) the area contained by A and Cii) the area contained by B and Ciii) A onlyiv) B onlyv) C only
Oxidation-reduction reactions: a. Transfer electrons from one molecule to anotherb. Are not used by living cellsc. Transfer protons from one molecule to anotherd. Reduce the amount of oxygen in the celle. Increase the amount of oxygen in the cell
Oxidation means: a. The gain of oxygen by a cellb. The loss of electrons from a moleculec. The loss of oxygen by a celld. The gain of electrons by a molecule
Reduction is the loss of electrons.a. Trueb. False
What do the terms "aerobic" and "anaerobic" mean?For bacteria, which catabolic pathways for glucose are aerobic? Which are anaerobic?
In terms of glucose, explain why biosynthetic anabolic pathways are not just the reversal of the corresponding catabolic pathways.
If the reactants of a chemical reaction gain electrons as they proceed to products, the reactants are being:A. oxidized.B. catabolized.C. reduced.D. made into anions.
When something is oxidized, it _____ electrons and when somethins is reduced, it _____ electrons.A. gains; losesB. loses; gainsC. gains; gainsD. loses; loses
Which statement describes redox reactions?A. Reduction does not occur without oxidationB. A molecule is reduced if it gains electrons.C. Oxidation generally involves the loss of H+ ions in addition to the loss of electrons.D. All of these describe redox reactions.
In this reaction, the reactant(s) are _____ and the coenzyme NAD is _____.A. oxidized; reducedB. reduced; reducedC. oxidized; oxidizedD. reduced; oxidized
In which of the following reactions does the underlined atom undergo an oxidation?A. Na → Na+ (Na atom → Na+ ion)B. Cl → Cl- (Cl atom → Cl- ion)C. CH3CH2OH → CH3CHO (ethanol → acetaldehyde)D. CH3CHO → CH3COO- (acetaldehyde → acetic acid)E. CH2=CH2 → CH3CH3 (ethene → ethane)