EEB 2244 Lecture 5: Coping with Environmental Variation - Energy
22 Dec 2018
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Document Summary
Energy is one of the most basic requirements for all organisms. Energy is crucial maintenance, growth and reproduction all depend on energy acquisition. proteins are not made. Cell membranes degrade, and organelles cease to operate without energy to maintain and repair them. Energy is in the environment in a variety of forms: If energy input stops, so does biological functioning. Radiant and chemical energy are the forms organisms use to meet the demands of growth and maintenance. Kinetic energy influences the rate of chemical reactions and temperature is important for controlling the rate of activity and metabolic energy demand of organisms. If cold endotherm needs to warm its body to the optimal temperature for physiological. Autotrophs are organisms that assimilate energy from sunlight (photosynthetic. Heterotrophs are organisms that obtain their energy by consuming energy-rich organic. They convert energy from sunlight or inorganic compounds into chemical energy stored functioning, occurs through burning chemical energy from its food during cellular respiration.
