5 Questions
What is the purpose of respiration in organisms?
To provide energy for cellular functions
Why does running make a person breathe faster?
To supply more oxygen to the muscles for energy production
What is the smallest structural and functional unit of an organism?
Cell
What are the functions performed by each cell of an organism?
Nutrition, transport, excretion, and reproduction
What is the purpose of breathing rapidly after physical activity?
To remove excess carbon dioxide and take in more oxygen
Study Notes
Cellular Biology
- The smallest structural and functional unit of an organism is the cell.
Cellular Functions
- Each cell of an organism performs various functions such as:
- Regulating what enters and leaves the cell
- Maintaining a stable internal environment
- Responding to stimuli
- Growing and reproducing
- Metabolizing and producing energy
Respiration
- Respiration is the process by which cells generate energy from the food they consume.
- The purpose of respiration in organisms is to generate energy for various cellular activities.
Respiratory Response to Exercise
- During physical activities like running, the body's oxygen demand increases to meet the energy needs of the muscles.
- Running makes a person breathe faster to take in more oxygen and expel more carbon dioxide.
- Breathing rapidly after physical activity helps to:
- Replenish oxygen stores
- Remove excess lactic acid
- Regulate body temperature
Test your knowledge of respiration in organisms with this quiz! Explore the process of breathing, exchange of gases, and the importance of respiration in living organisms.
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