food and digestion - excellence questions Flashcards
(20 cards)
what do carbohydrate sugar do ?
short-term energy
what do lipids do ?
long term energy
build cell membranes
what do carbohydrates starch do ?
long-term energy
what do proteins do ?
growth and repair of cells
what does fibre do ?
helps movement in digestive track
what does vitimans/minerals do ?
help in chemical reactions
how can you tell a skull is a carnivore ?
pointy canines and incisors , pointed molars to tear , grind meat
how can you tell if a skull is a herbivore ?
herbivores have ridged grinding surfaces on their teeth and a long, toothless gap between the cheek teeth and the front of the jaw.
simple carbs is also know as what ?
glucose
complex carbs is also known as what ?
starch
describe how you will test for the presence of the simple sugar glucose ?
we use benedicts solution , which will need heating . We heat this solution by heating a beaker full of water , then placing the tubes holding the solution and food inside the beaker . It goes from blue to green , yellow , orange , or red if glucose is present .
- green ( not much ) , yellow/orange ( moderate ) , red ( a lot )
biuret solution is a mixture of what ?
sodium hydroxide and copper sulphate
biuret solution is used to test what ?
protein
what is used to test for starch
Iodine
function of villi
to create more surface area to absorb nutrient from food
stages of digestion and where ?
ingestion - mouth / oesophagus
digestion - mouth digest starch , small intestine digest starch , protein , lipids , stomach digest protein
absorbing - small intestine for nutrients , large intestine for water
egestion - rectum stores waste , anus ejects waste
what is a healthy balanced diet ?
A healthy balanced diet is when you eat the correct types and the correct amount of nutrients for your age and gender , and you do physical exercise to ensure that input of energy = output of energy
how does having a healthy balanced diet affect hauora ( example ) =
The way diest can affect hauora is if I dont eat enough . A consequence of this is regular headaches and being tired . This affects my physical well-being . As i get tired , I get triggered and cry alot . This is affecting my emotional well-being. People dont like to be around me because of this . This affects my social- wellbeing. Being tired I cant think of my purpose in life , affecting my spiritual well-being.
What enzyme breaks down food in that mouth ?
Amylase_ is the
chemical that breaks down food in the
mouth.
Name the enzymes in the small intestine and their function
amylase breaks down starch into
simple sugars
Protease breaks down protein into
amino acids
Lipase breaks down lipids (fats) in to
fatty acids and glycerol
