Topic 2 Organisation Flashcards
What is a catalyst?
Substance that increases speed of reaction without being changed/used up in reaction
What do carboghydrases break down carbohydrates into?
Simple sugars
What is an example of a carbohydrase that breaks down starch?
Amylase
Which 3 places is amylase made in?
Salivary glands
Pancreas
Small intestine
Which 3 places are proteases made in?
stomach
Pancreas
small intestine
Which 2 places are lipases made in?
pancreas
Small intestine
What are the products of digestion used to make?
New carbohydrates, lipids and proteins
Where is bile made?
In the liver
Where is bile stored?
In the gall bladder
Where is bile released into?
Small intestine
How does bile neutralise Hydrochloric acid from the stomach?
Bile is alkaline
How does emulsifying fats increase the rate of fat breakdown by lipase?
Forms small droplets- larger surface area
Which solution is used to test for sugars?
Benedict’s
Which solution is used to test for starch?
Iodine
Which solution is used to test for protein?
Biuret reagent
Which solution is used to test for lipids?
Sudan 111
Where does gas exchange happen in the body?
Between Alveoli and blood in capillaries
Where are the lungs located in the body?
In the thorax (top part of body)
What are the lungs surrounded by?
Pleural membranes
What two tubes does the trachea split into?
Bronchi (each one is a bronchus to each lung)**
What smaller tubes to the bronchi split into?
Bronchioles
What happens to oxygen when the blood reaches body cells?
Oxygen released from red blood cells and diffuses into body cells
What happens to carbon dioxide when blood reaches body cells?
Carbon dioxide diffuses out of body cells into blood and carried back to lungs
Why is there a low concentration of oxygen and high concentration of CO2 in the blood passing next to the alveoli?
Blood has returned to lungs from rest of body