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34 Cards in this Set
- Front
- Back
Substance can be transported across the cell membrace in one of four ways.
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1. Through Pores
2. Dissolved in lipid membrane and diffuse through 3. Active transport mechanism (low to high) 4. Carrier Molocules (high to low) |
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What does Cytoplasm consist of?
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Cytoplasm consists of water, glucose (simple sugar) organic and inorganic salts and nitrogenous substances
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What are suspended in the cytoplasm?
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The nucleus and organelles are suspended in the cytoplasm
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The cytoplasm is statc, true or false?
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The cytoplasm is not static and is constantly being renewd.
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Describe cytoplasm
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Semi-fluid (jelly like) opaque substance which forms the bulk of the cell
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What is the mechanism of the nucleus?
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This is the 'brain' of the cell
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Describe the nucleus
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It is a dense body within g the cell and is essential to cell finction. It is usually surrounded by a nuclear membrane
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What is a nucleolus
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One of more found inside the nucleus-they manufacture ribosomes.
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What are organells?
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Structures within the cell that are visible excluding the nucleus
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Mitochondrea are the ______of te cell...
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Powerstations of cell
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What is the function of Mitochondrea?
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Convert energy from cell into stored energy
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What does it look like Mitochondrea?
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Greatly folded
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Lysosomes are the________ of the cell
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Digestive system of cell
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What is the function of Lysosomes?
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They contain enzymes
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What are Lysosomes durrounded be
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Surrounded by cell membrane
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Vacuoles are the ___________ of the cell
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Dustbins of the cell
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What is the function of Vacuoles
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They contain the waste products and bactaria
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what do vacuoles look like?
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Clear spaces within the cell
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What is the function of Golgi complex?
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Synthesis of proteins, fats and lysosomal enzymes
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what does the golgi complex look like?
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Flattened tubes
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Where is the golgi complex situated?
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Near the nucleus
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What does the Endoplasmic Reticulum look like?
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Network of membrane continuous to the nucleur membrane
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What is the rough Endoplasmic Reticulum?
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Rough, includes ribosomes
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What is the smooth Endoplasmic Reticulum?
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Smooth, involved in lipid and protine synthesis
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What is Ribosomes mainly made of?
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Composed mainly of RNA (Ribonucleic Acid)
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Where are ribosomes made?
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Made in the Nucleus
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What are ribosomes function?
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Protein Synthesis
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What are Centrosomes concerned with?
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Movement of chromosomes during cell devision
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how many centrioles do Centrosomes contain?
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two
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What does Centrosomes look like?
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Area of condensed cytoplasm
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What does melanin do?
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Responsible for eye/hair colour also pigment found in each
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What does melanin look like?
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Dark brown/black granules in cytoplasm
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What is Haemosiderin?
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Soluble from of iron (fe)
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What does Haemosiderin sometimes get confused with in looks?
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Melanin
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