Organisation Flashcards
(23 cards)
Enzyme-amylase
Substrate-starch
Product-maltose(glucose)
Where it is made- pancreas and salivary glands
Where it acts- small intestine and salivary glands
Optimum ph conditions-7
Enzyme-protease
Substrate-protein
Product-amino acids
Where it is made-pancreas and stomach
Where it acts-small intestine and stomach
Optimum ph conditions-1-2(3)
Enzyme-lipase
Substrate-lipids
Product-fatty acids+ glycerol
Where it is made-pancreas
Where it acts-small intestine
Optimum ph conditions-7
Test for sugars
Put about 2ml of sample in test tube
Add equal amounts of Benedict’s reagent
Heat in water bath for 5 mins
If sugar is present colour will change from blue to either green/yello/red depending on amount of sugar present
How does bile aid digestion
Emulsifies fats to give them a larger sa for lipase to work-speeds up digestion
Bile neutralises stomach acid to Rase ph so that protease can work
How to test for protein
Using equal amounts of bieruet solution and the sample if protein is present it will turn from blue to lilac
What is the function of the phloem
To transport food substances (dissolved sugars) around the plant-translocation
Where in the plant is meristem tissue located
Growing tips of root and shoots
What us the function of the xylem
To transport water and dissolved minerals from the roots to the stem and the leaves-the transpiration stream
What is transpiration
The evaporation and diffusion of water from the leaves of a plant
What is a carcinogen
Substances/chemicals that cause cancer eg the chemicals inside of cigarettes
How is the structure of the artery related to its function
It has thin walls and elastic fivers so that it can stretch and withstand high blood pressure
Platelets
Allows blood to clot
Plasma
The liquid part if blood, carries many substances eg hormones
WBC
Defends against pathogens
RBC
Transports oxygen
Advantage of stents
Patients usally recover quickly
Disadvantages of stents
Rick if blood clotting near the stent
How can infection with a microorganism lead to the development of other non communicable diseases
Infections with some viruses can lead to the development of cancers or may trigger allergic reactions
Benign vs malignant
Benign- remains in one place and doesn’t invade other tissues in the body- usually not dangerous
Malignant- spreads to other parts of the body when cells break off and travel in the blood stream to form secondary tumors
How will a faulty valve affect a persons health
Breathlessness, tiredness and fatigue
What are statins
Drugs that reduce the amount of LDL cholesterol in the blood so reduce the amount of fatty deposits in the cornonry artieries
What is rejection of a donated organ
The body’s immune system attacks it
