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Questions and Answers
What is the process of obtaining nutrients and transferring them from outside to inside the body called?
nutrition
Which of the following organisms have autotrophic nutrition?
Viruses show molecular movement until they infect a cell.
False
_______ are bio-catalysts that break down food into simpler substances.
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What are the three main events in photosynthesis?
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Diffusion is enough to get oxygen in multicellular organisms.
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Study Notes
Life Processes
- Viruses are not considered living because they do not exhibit molecular movement until they infect a cell.
- Diffusion, the movement of substances from high concentration to low concentration, is insufficient for larger organisms as not all cells are in direct contact with the environment.
- Nutrition is the process by which organisms obtain nutrients and transfer them into their bodies.
- Nutrients are essential for growth and development of organisms.
- Enzymes are biological catalysts that breakdown food into simpler molecules for digestion.
- Autotrophic nutrition is the process by which organisms manufacture their own food through photosynthesis. Examples include plants and blue-green algae.
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Photosynthesis includes the following events:
- Absorption of light energy by chlorophyll
- Conversion of light energy into chemical energy
- Splitting of water molecules into hydrogen and oxygen
- Reduction of carbon dioxide to carbohydrates
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Description
Test your knowledge on vital life processes, including nutrition, enzymes, and photosynthesis. This quiz covers how organisms obtain nutrients and the importance of molecular movement. Understand the differences between autotrophic and heterotrophic nutrition comprehensively.
