Energy Transformation In Nature - SS1 Biology Past Questions and Answers - page 1
Which of the following processes is an example of energy loss in the ecosystem?
Photosynthesis
Cellular respiration
Decomposition
Cellular respiration
Energy cannot be created or destroyed, only transferred or transformed.
Energy flows from organisms with lower trophic levels to those with higher trophic levels.
Energy is constantly being added to the ecosystem through sunlight
Energy cannot be created or destroyed, only transferred or transformed.
Which of the following organisms would be classified as a primary consumer in an energy pyramid?
Grasshopper
Hawk
Snake
1. State the first two laws of thermodynamics
i. First Law of Thermodynamics (Law of Conservation of Energy): This law states that energy cannot be created or destroyed in an isolated system; it can only be transferred or transformed from one form to another. In the context of biology, this means that energy within a biological system is neither created nor destroyed but is instead converted from one form (e.g., chemical energy) to another (e.g., mechanical energy or heat).
ii. Second Law of Thermodynamics: This law states that in any conversion of energy from one form to another, there is always a decrease in the amount of useful energy. Some amount of energy will always be lost in the form of heat.