Food Flashcards
why is food needed by all organisms?
it provides energy
it is the reason for all metabolic reactions in the body
what is the ratio of hydrogen atoms to oxygen atoms in a carbohydrate?
2:1
give a structural role of lipids in cells
it insulates the body
give a metabolic role of lipids in cells
it stores energy
give an example of a fat soluble vitamin
vitamin D
name a disorder due to a dietary deficiency of vitamin D
rickets in children
osteomalacia in adults
what is meant by the term “metabolism”
all of the chemical reactions that take place within an organism
name a protein that has a fibrous structure
where in the body would you find this protein
keratin
hair and nails
give a role of a named mineral other than calcium which is required by plants
magnesium
allows the plant to make chlorophyll
state 2 reasons why water is needed for all living things
it transports materials
chemical reactions occur in water in the cells
name the metallic element present in haemoglobin
iron
which type of food molecule may be identified by the use of benedict’s or fehling’s solution?
glucose
