Organisation Flashcards
tissues are …
a group of similar cells working together
Organs are …
a group of different tissues working together
Organ systems are …
a group of different organs working together
The digestive system is an example of a … …
organ system
Enzymes are … …
Biological, catalysts
Enzymes are specialised …
Proteins
Enzyme function can be described as the … and … model
Lock and Key model
The … binds to the active site
substrate
An enzyme denatures when …
the active site changes shape and the substrate can no
longer bind to the enzyme.
what denatures enzymes?
Incorrect temperatures and incorrect Ph
Carbohydrase enzymes break down … into simple …
Carbohydrates, sugars
Amylase is a type of …
Carbohydrase
Amylase breaks down … into …
Starch, sugar
Lipase enzymes breaks down … into … acid and …
fat, fatty acids, Carbohydrase
Protease enzymes breaks … into … …
Protein, amino acids
bile is made in the … and stored in the … bladder
Liver, gall
Bile … the substances from the … and helps to … fats.
neutralises, stomach, emulsify
Different chemicals test for different nutrient groups:
Iodine
Benedicts
Biuret reagent
Ethanol
Iodine tests for starch – pale yellow to blue/black
Benedicts tests for sugar – blue to brick red
Biuret reagent tests for protein – blue to purple
Ethanol tests for fats – clear to cloudy
The circulatory system is made of:
arteries, veins, capillaries and the heart.
Arteries are specialised with …
thick elastic walls and a small lumen.
Capillary walls are only one cell thick…
so there is a short distance for diffusion.
Veins have …, thinner and less elastic walls and a larger …
valves, lumen
The main structure of the heart includes the:
aorta, vena cava, pulmonary artery, pulmonary vein, valves, atria and ventricles.
Heart rate is controlled by…
a group of cells that act as a pacemaker.
