Science
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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Enzyme | Proteins made by living cells, arebiological catalysts, break down molecules, build up molecules, they have an active site that only substrate can fit in.
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Stomata | Tiny holes where gas exchange occur
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Guard Cells | Cells that can chnage shape and open or close the stomata
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Phloem | Tubes that take glucose formed during photosynthisis to other parts of the plant
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Xylem | Vessels that bring water to the leaf from the soil.
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Chlorophyll | Green substanceinside leaf that traps energy from the light.
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Spongy mesophyll | Irregular-shaped cells thatprovide airspaces that allow gases todiffuse to andfrom cells.
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Pallisade mesophyll | The layer near the top of the leaf so that the pallisade cells get plenty of light.
Pallisade cells contain lots of chloroplasts forphotosynthisis.
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Cuticle | A waxy layer that prevents water being lost from the top of the leaf
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Lower Epidermis | Thin layer that supports bottom of leaf.
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Upper epidermis | Thin layer that supports the top of the leaf.
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Photosynthisis | Photo=Light
Synthisis= To make
Can only take place during the day.
Carbon dioxide + Water ---> Glucose + Oxygen
6CO2 + 6H2O ---> C6H12O6 + 6O2
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Calcium | Maintain strong bones, also needed for muscles andnerves to function properly.
Found in dairy and fish
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Iron | Is needed tomake haemoglobin which is in the red blood cell.
Found in red meat and dark green veges.
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Vitamin D | Is needed toenable calcium to be absorped bythe gut.
Rickets:Weak bones and teeth.
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Vitamin C | Protects cells from damage production of collagen that helps wounds to heal, also helps absorption of iron from plant foods.
Scurvy: Fatigue, swollen gums,loss of teeth etc.
Found in Citrus fruits.
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Proteins | Chemical makeup of carbon,hydrogen, oxygen, nitrogen, (CHON)gives some energy, important for building new cells, making enzymes and defending us against disease.
Made up of amino acids.
Protein = Biuret = Purple
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Lipids | Chemical make up, carbon, hydrogen, oxygen (CHO). Also provide energy ( More than carbohydrates) insulation.
Made up of simple sugars.
Fats = Ethanol = Milky White
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Carbohydrates | Chemical makeup of carbon, hydrogen, oxygen ( CHO)
Main source of energy.
Made up of fatty acids and glycergol.
Starch= Iodine = Blue-Black
Glucose = Heat = Brick red-Orange
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Denatured | Enzymes altered by heat causing change in shape.
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Catalysts | Is a substance that speeds up chemical reactions without being used up.
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Active Site | Only certain molecules (Substrate)can fit into in order to react
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Semi-permeable membrane | Allows only some substances through
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Flaccid | When cell is not completely full with water
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Turgid | When cell is full with water.
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Diffusion | The movement of molecules from an area of high concentration to an area of low concentrations.
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Osmosis | Diffusion of water
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Nucleus | Contains genetic material that carries the instructions that control the structure and activities of the cell. (Found in animal and plant cells)
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Cytoplasm | Contains the cell organelles (Found in animal and plant cells)
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Cell membrane | Controls passage of substances into andout of cell (Found in animal and plant cells)
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Cell Wall | A rigid wall that gives shape to plant cells (Found in plant cells only)
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Vacuole | Contains water and dissolved substances and keep the pressure in plant cells. (Animals may contain small vacuole) (Found in plant cells only)
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Chloroplasts | Where photosynthisis takes place (Found in plant cells only)
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Transpiration | Water evaporates from mesophyll cell surface forming water vapour which can leave through the stomata
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Stamen | The male part of the flower which consists of the anther and the filament
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Filament | Supports the anther
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Anther | Produces the pollen
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Sepal | Protects the flower when it is bud
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Petals | Attracts insects for pollination
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Created by:
Vachrisa
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