Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Food
Chapter 3
| Question | Answer |
|---|---|
| state the function of food | energy, growth and repair of cells, tissues, etc |
| name six common elements in food | carbon, hydrogen, oxygen, nitrogen, phosphorus and sulfur |
| name five common elements in dissolved salts | magnesium, chlorine, sodium, potassium and calcium |
| name three trace elements | iron, copper and zinc |
| define biomolecule | a molecule that is produced by a living organism |
| state what a vitamin is | a carbon-based substance |
| name a water-soluble vitamin, a source and deficiency | vitamin c, citrus fruits and scurvy |
| name a fat-soluble vitamin, a source and a deficiency | vitamin d, milk, rickets in children and osteoporosis/osteomalacia in adults |
| name the percentage of the body taken up by water | 60 percent |
| state two reasons living things need water | solvent good for transport and good absorber of heat |
| name a structural polysaccharide and its location | cellulose, located in the cell wall (plant cell) |
| differentiate between a fat and a oil | fat is a solid while oil is a liquid |
| name a fibrous protein | keratin |
| define anabolic + example | using small molecules to make big ones e.g photosynthesis |
| define catabolic + example | going from large molecules to small ones e.g respirtation |
| how are minerals used? | to form part of rigid body structures, form soft body tissues ad function in cellular and body fluids |
| two minerals used in plants | magnesium, green pigment in chlorophyll sodium, balances water content in cells |
| two minerals used in animals | calcium, keeps bones healthy Iron, production of haemoglobin |
| carbohydrates metabolic role | starch for storage (Plants) Respiration photosynthesis |
| Carbohydrates structural role | makes cellulose (cell wall) Chitin ( Fungal cell walls) |
| carbohydrate units & examples | monosaccharides E.G Fruit Disaccharides E.G milk polysaccharides E.G bread |
| Carbohydrate elements | C1 H2 O1 |
| lipids metabolic role | energy storage and insulation |
| lipids structural role | heat insulation |
| lipids units & examples | triglyceride (glycerol + fatty acids) Phospholipid (glycerol + 2 fatty acids + phosphate) |
| lipid elements | CHOP |
| protein metabolic role | control chemical reactions (Enzymes) |
| Protein units & examples | 20 common acids E.g meat |
| protein elements | CHONS |
| test for reducing sugar | glucose in water and benedicts solution, heat used |
| color change for reducing sugar | blue to red |
| test for starch | starch dissolved in water and iodine solution |
| color change for starch | yellow to black/blue |
| to test for lipid | lipid leaves a permanent stain on the brown paper |
| to test for protein | soluble protein (milk) in water and biuret solution |
| color change for protein | blue to purple |
Created by:
Kamilex
Popular Biology sets