Biology Flashcards
What are the two types of eukaryotic cell?
Animal and plant cells
What type of cell are bacteria?
Prokaryotic
Where is DNA found in animal and plant cells?
In the nucleus
What is the function of the cell membrane?
Controls movement of substances in and out of the cell
What is the function of mitochondria?
Site of respiration to transfer energy for the cell
What is the function of chloroplast?
Contain chlorophyll to absorb light energy for photosynthesis
What is the function of ribosomes?
Enable production of proteins (protein synthesis)
What is the function of the cell wall?
Strengthens and supports the cell
What is the structure of the main genetic material in a prokaryotic cell?
Single loop of DNA
How are electron microscopes different to light microscopes?
Electron microscopes use beams of electrons instead of light, cannot be used to view living samples, are much more expensive, and have a much higher magnification and resolution
What is the function of the red blood cell?
Carries oxygen around the body
Give three adaptations of a red blood cell
No nucleus
Contains a red pigment called haemoglobin
Has a bi-concave disc shape
What is the of function a nerve cell?
Carries electrical impulses around the body
Give two adaptations of a nerve cell
Branched endings
Myelin sheath insulates the axon
What is the function of a sperm cell?
Fertilises an ovum (egg)
