Science Biology Flashcards
What is the function of the nucleus cell?
Controls the activities of the cells
What is the function of the cytoplasm in a cell?
Where most chemical reactions occur
What is the function of the vacuole?
Contains cell sap and support the cell
What is the function of the cell membrane?
Controls substances that leave and enter the cell
What is the function of the mitochondria?
Release energy from respiration
What is the function of the chloroplasts?
Where photosynthesis takes place
What is the function of the ribosomes?
Where the protein is made food for the cell
Function of the cell wall?
Support and Strength
Which type of cells are known as eukaryotes?
Animal and Plant cells
Which type of cells are known as prokaryotes?
Bacteria
Describe how a sperm cell is adapted for its function
Lots of mitochondria to release energy | Tail to swim to the egg
Describe how a musclecell is adapted for its function.
Contract and relax for movement. | Lots of mitochondria to release energy
Describe how a nerve cell is adapted for its function.
Carry electrical impulses around the body. | Dendrites that connect to other nerves.
Describe how a root hair cell is adapted for its function.
Absorb water and mineral ions from the soil. | Long provides a large surface area
Name a gas that is diffused out of cells.
Carbon Dioxide
Name a gas that is diffused into cells.
Oxygen
Describe how human lungs are adapted for efficient gaseous exchange.
Large blood supplying concentration gradients | Thin walls for faster diffusion
Describehow surface area affects the rate of diffusion.
The higher the surface area the faster the rate of diffusion.
Describe how temperature affects the rate of diffusion.
The higher temperature means particles have more kinetic energy and so there is a faster rate of diffusion.
Describe how concentration the rate of diffusion.
The higher concentration increases the concentration gradient, so diffusion occurs faster.
Describe how plant roots and leaves are adapted for efficient gaseous exchange.
Roots:Large surface area to absorb water.
