B1- cell structure Flashcards
What are 2 types of eukaryotic cell
Animal and plant
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 chloroplasts
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 resolutiion
What is the function of the red blood cell
carries oxygen around the body
Give three adaptations of the red blood cell
no nucleus, contains a red pigment called haemoglobin, and has a bi-concave disc shape
What is the function of the 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 the sperm cell
fertalises an ovum (egg)
