Ch.8 - Energy and MetabolismSee 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

Practice: Even though breaking most bonds requires energy, breaking the bond between phosphates in ATP releases energy.

Practice: Energy coupling is when the energy released by an __________________ process drives an _________________ one.

Practice: Why does phosphorylation tend to increase the energy state of a molecule?

Additional Problems
The chief energy currency of all cells is a molecule called a. cyclic AMP b. NADH c. FADH d. ATP e. ADP
Whenever ATP is produced by a chemical reaction some energy is lost into the surroundings as heat.  a. True b. False
Which answer is true of the molecule shown here? a. Its energy is associated mainly with the adenine group. b. If it had one less O atom, it could be a subunit for replicating DNA. c. Protein kinases use it to control the action of some enzymes. d. Both (b) and (c). e. (a), (b), and (c).
A molecule that stores energy by linking charged phosphate groups to each other is called:a. ATPb. NADHc. FADHd. cyclic AMPe. pyruvate
Once ATP donates its phosphate to a coupled reaction it becomes ADP. The ADP: a. Can be recharged in an exergonic reaction to form ATP b. Is a waste product that must be broken down c. Can be recharged in an oxidation reaction to form ATP d. Can be recharged in an endergonic reaction to form ATP
The molecule below is the currency of energy used in cells. Its energy is located in the bonds connecting the a. two rings of the nitrogen base. b. nitrogen base and sugar. c. sugar and phosphate. d. two terminal (end) phosphates.
The molecule below is considered a monomer ofa. carbohydrate.b. protein.c. lipid.d. nucleic acid.
Why is ATP an excellent energy storage molecule for the cell?
Fireflies are flying beetles that flash light during mating rituals. The enzyme luciferase is involved in the illumination process and is an ATP requiring reaction. The coupled reactions are described below:luciferin + O2 → oxyluciferin + light          ∆G = +26.1 kJ/molIn the cell the reaction is coupled to the hydrolysis of ATP, shown below.ATP + H2O → AMP + PPi                           ∆G = -31.6 kJ/molThe net ∆G of the coupled reaction is __________. A. -5.5 kJ/molB. -11.2 kJ/molC. +5.5 kJ/molD. +11.2 kJ/mol
How can the breakdown of ATP be used to drive an endergonic reaction?
Explain how ATP is considered to be a nucleotide.
The part of an ATP molecule that holds the energy used in metabolism isA. the sugarB. the nitrogen-containing baseC. the phosphate bondsD. the amino acidE. the adenine
What are the three energy intermediates all living things must make?