Podcast
Questions and Answers
What is needed for maintenance processes to prevent damage and break-down?
What is needed for maintenance processes to prevent damage and break-down?
- Sunlight
- Energy (correct)
- Water
- Minerals
What is the process called that transfers a source of energy from outside the body to the inside?
What is the process called that transfers a source of energy from outside the body to the inside?
- Respiration
- Digestion
- Photosynthesis
- Nutrition (correct)
Why do organisms need additional raw material from outside if their body size is to grow?
Why do organisms need additional raw material from outside if their body size is to grow?
- To synthesize water
- To produce more energy
- To increase body temperature
- To obtain carbon-based molecules (correct)
What kind of reactions are commonly used by organisms to break down molecules?
What kind of reactions are commonly used by organisms to break down molecules?
Why do organisms need to convert energy sources into a uniform source of energy?
Why do organisms need to convert energy sources into a uniform source of energy?
What is a common source of oxygen for many organisms?
What is a common source of oxygen for many organisms?
Why might a single-celled organism not need specific organs for gas exchange?
Why might a single-celled organism not need specific organs for gas exchange?
Why is a transportation system required in multi-cellular organisms?
Why is a transportation system required in multi-cellular organisms?
What is the role of specialized tissues in multi-cellular organisms?
What is the role of specialized tissues in multi-cellular organisms?
Why do chemical reactions in organisms create waste by-products?
Why do chemical reactions in organisms create waste by-products?
What problem arises when food and oxygen are taken up at one place in multi-cellular organisms?
What problem arises when food and oxygen are taken up at one place in multi-cellular organisms?
Why might simple diffusion not be sufficient for meeting the needs of all cells in multi-cellular organisms?
Why might simple diffusion not be sufficient for meeting the needs of all cells in multi-cellular organisms?
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