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Cells and Tissues

HN Year 1

QuestionAnswer
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
Created by: hdou
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