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Questions and Answers
Where does photosynthesis occur?
In which process do producers obtain energy?
What is the main reason for energy loss in each step of a food chain?
What is the impact of removing a predator from a food web?
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What are the components of cell theory?
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Why is competition observed between organisms of the same species and different species?
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Study Notes
Photosynthesis and Cellular Respiration
- Photosynthesis produces energy, while cellular respiration consumes energy.
- Photosynthesis occurs in chloroplasts, while cellular respiration occurs in mitochondria.
- Aerobic cellular respiration requires oxygen, whereas anaerobic cellular respiration does not.
Ecosystems and Energy
- Producers (plants) obtain energy through photosynthesis, while consumers (animals) obtain energy by consuming other organisms.
- Energy is lost in each step of a food chain due to heat, waste, and energy storage.
- Matter is lost from a food chain through waste, decomposition, and respiration.
Symbiosis and Interaction
- Mutualism, commensalism, and parasitism are the three main types of symbiosis.
- Biotic and abiotic factors interact in ecosystems, with biotic factors being living organisms and abiotic factors being non-living components.
Human Impact and Ecosystems
- Human activities can impact ecosystems, leading to changes in populations, communities, and ecosystems.
- Natural impacts on ecosystems include natural disasters, climate change, and habitat destruction.
- Healthy ecosystems provide benefits to humans, including clean air and water, soil formation, and climate regulation.
Cell Biology
- The cell theory consists of three main components: all living organisms are composed of cells, cells are the basic units of life, and all cells arise from pre-existing cells.
- Plant cells have a cell wall, chloroplasts, and a large central vacuole, while animal cells have lysosomes and a smaller vacuole.
- Organelles in cells have specific functions, such as the nucleus controlling cell growth and the mitochondria generating energy.
- Hormones are chemical messengers that help regulate various bodily functions, and glands in the endocrine system produce these hormones.
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Description
Test your knowledge on identifying reactants and products of photosynthesis and cellular respiration, understanding the relationship between these processes, and differentiating between ecosystems and food webs.
