click below
click below
Normal Size Small Size show me how
Cells and Tissues
HN Year 1
Question | Answer |
---|---|
Starts at the nuclear membrane and curves from there through the cytoplasm | Enoplasmic Reticulum |
Small granules found floating free in the cytoplasm | Ribosomes |
A spherical sac | Lysosome |
Stacks of flattened parallel membrane pockets | Golgi Apparatus/Complex |
Found near the nucleus, composed of bundles of tubules | Centriole |
Spherical, temporary feature formed by layers of plasma membrane, may break up into smaller vacuoles | Vacuoles |
Largest Organelle | Nucleus |
Double membrane, surrounds nucleus | Nuclear Membrane |
90% is made up ofwater, jelly like substance It also contains enzymes, amino acids and other molecules needed for cell functions | Cytoplasm |
Functions of Epithelial tissue | Protection Lining Secretions Transport |
Found in the skin, vagina, anus and oesophagus | stratified squamous epithelium |
Four basic types of tissue | Muscular Connective Nervous Epithelial |
Properties of nervous tissue | Conductivity and irritability |
What can be said about afferent, efferent and mixed nerves | Afferent neurone – Signal to brain Efferent neurone – From CNS Mixed nerve – Contain fibres of both |
Loose connective and adipose tissue are both types of what? | Connective tissue |
Controls many functions of the cell and the genetic material | Nucleus |
Play a key roll in cell division | Centrioles |
It converts the energy stored in glucose into ATP | Mitochondria |
Isolates and transports proteins after their synthesis | Rough Endoplasmic Reticulum |
Is also involved in the synthesis of fatty molecules such as lipids | Smooth Endoplasmic Reticulum |
Play a key role in the assembly of proteins | Ribosomes |
It packages proteins and carbohydrates into vesicles for ‘export’ | Golgi Body/Complex |
This is where the digestion of cell nutrients takes place. They also breakdown foreign material | Lysosomes |
They engulf substances in order to absorb them into the cell. | Vacuoles |