Cell Survival and Processes Flashcards
Respiration and Diffusion
What substances are needed for respiration to take place in cells?
Oxygen and glucose.
Respiration and Diffusion
What are the waste products of respiration?
Carbon dioxide and water.
Respiration and Diffusion
How do useful substances like oxygen and glucose enter the cell?
By diffusion.
Respiration and Diffusion
How do waste products of respiration leave the cell?
By diffusion.
Respiration and Diffusion
Why is it important for waste products to be removed from cells?
To keep the cells alive.
Respiration and Diffusion
Are cells two-dimensional or three-dimensional structures?
Three-dimensional (3D).
Rate of Diffusion
What does the rate of diffusion refer to?
How fast diffusion happens.
Rate of Diffusion
What three factors can affect the rate of diffusion?
- Temperature
- Concentration of particles
- Surface area
Crushed sugar in hot water dissolves faster than a sugar cube in cold wa
Rate of Diffusion
How does temperature affect the rate of diffusion?
The higher the temperature, the faster the rate of diffusion.
Rate of Diffusion
How does the concentration of particles affect the rate of diffusion?
The bigger the difference in concentration, the faster the rate of diffusion.
Rate of Diffusion
How does surface area affect the rate of diffusion?
The larger the surface area, the faster the rate of diffusion.
Needs of Plants and Animals for Survival
What do plants need to survive?
Oxygen, water, light, carbon dioxide, minerals, a suitable temperature, and space to grow.
Needs of Plants and Animals for Survival
What do animals, including humans, need to survive?
- Water
- Oxygen
- Nutrients
- The right temperature
Needs of Plants and Animals for Survival
Why do plants and animals need specific resources to survive?
To keep all the cells that make them up alive and functioning properly.
