Random Flashcards
Testing for osmosis etc
Potato
Agar and phenolphthalein
Busking tubing
Carbohydrates molecules
Carbon
Hydrogen
Oxygen
Proteins molecules
Carbon
Nitrogen
Hydrogen
Oxygen
Lipids molecules
Carbon
Hydrogen
Oxygen
Carbohydrates- what they are made of
Glucose/maltose in a long chain
What are proteins made of?
Long chains of amino acids
What are lipids made of?
Fatty acids and glycerol
How can you test for glucose?
Add Benedict’s solution
Heat
Blue to brick red
How can you test for starch?
Iodine turns from browny ornate to blue black
Function of carbohydrates
Provide energy
Function of lipids
Provide energy
act as an energy store provide insulation
Function of proteins
Needed for growth and repair of tissues, and to provide energy in emergencies
Vitamin a function
Helps to improve vision and keep your skin and hair healthy
Vitamin C function
Sticks together cells lining surfaces in the body
Vitamin D function
Helps bones absorb calcium and phosphorus
Dietary fibre function
Aids the movement of food through the gut
Calcium function
Make bones and teeth
Iron function
Make haemoglobin for healthy blood
Calculation of energy in food
Mass of water X temperature change of water x 4.2
Where is produced?
The liver
Where is bile stored?
The gall bladder
What is the role of bile?
Neutralise stomCh acid
Emulsifying lipids
Adaptions of villus
Network of blood capillaries
Microvilli
Single permeable layer of surface cells
Mouth
Salivary glands produce amylase
Teeth break down food mechanically
Stomach
Pummels food with muscular walls
Produces pepsin
Produced hydrochloric acid to kill bacteria and provide good conditions for enzymes
Pancreas
Produces protease, amylase and lipase
Where nutrients are absorbed out of the alimentary canal into the body
Large intestine
Where excess water is absorbed from the food
Gall bladder
Where bile is stored
Oesophagus
Muscular tube that connects the mouth to the stomach
How does peristalsis work?
Squeezing actor
Waves of circular muscle contractions
Ingestion
Putting food or drink into your mouth
Digestion
The break down of large, insoluble molecules into small, soluble molecules
Absorption
The process of moving molecules through the walls of the intestines into the blood
Assimilation
When digested molecules move into body cells and become part of the cells
Egestion
Getting rid of unwanted waste from the body
Aerobic respiration
Glucose + oxygen –> Carbon dioxide + water
Aerobic respiration chemical equation
C6H12O6 + 6O2 –> 6CO2 + 6H2O
Anaerobic respiration in yeast cells
Glucose –> ethanol + Carbon dioxide
Anaerobic respiration in animal cells
Glucose–>lactic acid
How to test for hear production during respiration
Use germinating peas in a vacuum flask
