BIOL2000 Lecture Notes - Lecture 14: Porton, Structural Motif, Threonine
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Document Summary
Organisms an be classified according to their energy and carbon sources: phototrophs: energy from sunlight carbon dioxide + water --> sugar + oxygen. Carbon from organic compounds: chemotrophs: energy from chemical compounds organic molecules + oxygen --> carbon dioxide + water. Metabolism is the set of chemical actions that sustain life: metabolism: the chemical reactions that convert molecules into other molecules and transfer energy in living organisms. Catabolism: set of chemical reactions that break down molecules into i. smaller units and in the process, produce atp. Anabolism: set of chemical reactions that build molecules from smaller ii. units and require an input of energy, in the form of atp. 6. 2 energy: energy: system"s capacity to do work. Kinetic and potential energy are two forms of energy: kinetic energy: energy of motion i. ii. iii. iv. Thermal energy: potential energy: stored energy i. surroundings. Depends on the structure of the object or its position relative to its.
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Related Questions
1) A chemoautotroph would use _____ as an energy source.
A | carbon dioxide |
B | chemical bonds within high energy molecules |
C | sunlight |
D | heat energy |
2) A photoheterotroph would use _____ as a source of carbon atoms.
A | high energy organic molecules (e.g., sugars) |
B | sunlight |
C | carbon dioxide |
D | inorganic molecules |
3) Biologists sometimes divide living organisms into two groups: autotrophs and heterotrophs. These two groups differ in _____.
A | their electron acceptors |
B | their mode of nutrition |
C | the way that they generate ATP |
D | their sources of energy |