Cellular Biology and Transport Mechanisms
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| Name the six levels of organisation | Chemical, cells, tissue, organs, organ system, organism
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| What is the chemical Level of organisation | Units of matter that participate in chemical
reactions. i.e atoms, DNA and molecules
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| What is the cellular Level of organisation | Basic structural and functional unit of a living organism
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| What is the organ Level of organisation | Different types of tissues joined together. Composed of two or more types of tissue. They have specific functions. Normally recognizable shape. e.g liver, lungs, heart etc
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| What is the organ system Level of organisation | Composed of related organs with a common
function, There are considered to be 11 systems within the
body; Integumentary, Skeletal, Muscular, Nervous, Endocrine, Cardiovascular, Lymphatic, Respiratory, Digestive, Urinary and Reproductive
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| What is the tissuel Level of organisation | Groups of cells and the material that surround
them. Working together to perform a particular function. There are four basic types of tissue
• Epithelial
• Connective
• Muscular
• Nervous
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| What is the organism Level of organisation | All part of the body functioning together to constitute
the total organism
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| What is a Cat Ion? | A cation is a positively charged ION. examples include;
Hydrogen, calcium, sodium and potassium
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| What is an AnIon? | An anion is a negitivly charged ION. examples include
Fluoride, chloride, iodide and hydroxide
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| Functions of a LIPID? | A lipid is a fat which stores energy, makes membranes and can act as hormones,
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| Enzymes Definition and Function | They are macromolecular biological catalysts.
They increase reaction rates, Reduce activation energy of the reaction , Enzymes are unchanged after reaction and are under cellular control. They are highly specific
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| The cell wall Bi layer | is a phospholipid bi layer that contains hydrophilic and hydrophobic parts.
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| The cell membrance | A selective barrier that regulates the flow of materials between the cells internal environment for external environments.
Being selective it helps create and maintain the appropriate
environment for normal cellular activities.
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| What are the different types of transport mechanisms | Simple diffusion
Osmosis
Facilitated diffusion
Active transport
Endo/Exocytosis
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| Diffusion | The movement of solute from a high concentration solution to a lower concentration solution.
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| Osmosis | The movement of water from a high concentration solution to a lower concentration solution.
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| Facilitated Diffusion | Where positively charged ions are unable to simply diffuse across the membrane, channel proteins (tunnel like structures in the membrane) and carrier protines (suck them in and spins and spits them back out ) can be used instead for them to travel through
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| Active transport | dissolved molecules move across a cell membrane from low to high concentrations. Particles move against the concentration gradient and require an input of energy from the cell.
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| endo and exo cytosis | vesicles carrying particles carry to cell membrane wall and pushes it out in exocytosos and vesicles form a bubble around particles and carry them into a cell for endocytosis
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| Epithelial Tissue | Covers body surfaces, lines hollow organs, and cavities,
forms glands
Squamous
• Simple
• Cuboidal
• Columnar
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| connective tissue | Connects, supports and protects body organs while
distributing blood vessels to other tissues
Fibrous
• Loose, Dense, Elastic, Reticular
• Special Connective
• Cartilage, Bone, Blood, Adipose
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| Muscle tissue | Contracts, makes body parts move, generates heat
Skeletal muscle
• Smooth muscle
• Cardiac muscle
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| Nervous tissue | Carries information to other parts of the body
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| Blood Cells | – Red cells – erythrocytes
– White cells – leucocytes
– Platelets - thrombocytes
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| Ribosomes are made from two sub units but where are they made? | In the neucleolus
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| Sodium, Potassium and hydrogen existing in the body unbound to another element they are……….? | Cations
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| The …………….. of the cell is the main site for production of ATP by the process of …………….. | Mitochondria and Cellular respiration
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| The carbohydrate monosaccharides combine by a ………………….reaction to form ……………? | d
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| Phospholipids have ……………head and……………tails allowing them the properties to form membranes | Hydrophilic and Hydrophobic
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| Enzymes are easily ………………by changes of …………..and…………….. | x
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| Diffusion refers to the movement of molecules from ……………………. to……………………? | High to low
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| A cell in a hypotonic solution would…………….? | expand
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| a cell in a hypertonic solution would……………..? | go all spikey looking
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| The movement of substances through the cell membrane along its concentration gradient by a carrier protein is an example of ……………..? | Facilitated Diffusion
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| The movement of Na+/K+ using the Na+/K+ pump is a example ………………..transport. | Active Transport
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| ……………..Is a storage polysaccharide made from Alpha glucose monomers. | ?
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Created by:
Deveres
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