Food Flashcards
Elements in Carbohydrates
CHO
sources of carbohydrates
bread, pasta
what is a monosaccride
sub unit of a carbohydrate
what is a general formula for a carbohydrate
Cx(H2O)y
name a monosaccride
glucose
what is a disaccharide
2 single sugar units joined together
name an example of a disaccharide
maltose. sucrose
what is a polysaccride
many simple sugar units joined together
example of a structural polysaccharides
cellulose-plant cell walls
chitin
example of a metabolic polysaccharide
plants- starch (energy storage)
animals-glycogen
name the test for starch
Iodine
blue-black
name the test for reducing sugar(glucose)
benedicts solution
(heat)
Blue - Brick red
Name the elements in proteins
CHNO
protein in found in…
meat,eggs
what is a sub unit of a protein
amino acid
how many amino acids are there
20
Name structural protein
collagen- skin
kreatin- hair and nails
what is the metabolic role of proteins
enzymes control reactions
horomones- control reactions and honostatsis
where is protein made
ribosome
what is the test for protein
biurets solution
blue- violet
what is a fibrous protein
slow little folding
what is a globular protein
lots of folding
important for metabolism
folded into roughly spherical shape
Name the elements in lipids
CHO
lipids are found in…
butter, nuts
what is a triglyceride and what is it composed of
sub unit of a lipid.
3 fatty acids.
Glycerol
what is a phospholipid composed of
glycerol, 2 fatty acids and a phosphate group
name structural roles of lipids
insulation and protection of organs
part of cell membranes
name metbolic role of lipids
provides energy
oils are - at room temp
liquid
fats are- at room temp
solid
name the test for lipids
brown paper test
pos. permanent translucent stain
Name a water soluble vitamin , it’s uses and it’s deficiency disease
Vitamin C, for formation of connective tissue, Iron absorption, Causes Scurvy
Name a fat soluble vitamin , it’s uses and it’s deficiency disease
Vitamin D, needed to absorb calcium, Caused Rickets in children
Minerals needed in the human body
Calcium - Bones
Iron- Haemoglobin
Mineral needed in Plants
Calcium- cell wall
Magnesium- Chlorophyll
what is the importance of water
good solvent
temperture regulartion
medium for chemical reactions
transport
anabolic reactions
chemical reactions that uses energy to convert smaller molecules into larger ones
catabolic reactions
chemical reaction that releases energy when a large molecule is broken down into smaller ones
biomolecule
molecules that are involved in the metabolic processes of living organisms
