B4 Organisng Animals And Plants Flashcards
Cell
The basic building blocks of all living things
Tissue
A group of cells with a similar structure and function is called a tissue
Organ
Combination of tissues carrying out a specific function
Organism
Organ systems working together to form living organisms
Sugar test
Benedicts solution
Blue-green to yellow-red
Starch test
Iodine
Blue-black
Lipid
Sudan III
Top layer bright red
Iodine used for test in presence of starch
Independant variable -
Dependant variable -
Independant - the pH of solution
Dependant - time taken
Dependant variable
The variable that is measured
Independant variable
The variabe that isn’t changed
Which is the liver and which is the pancreas in digestuve system
Liver is the bigger one and the one above the pancreas
Pancreas is between stomach and large intestine
Purpose of digestive system
To break down large molecules into smaller soluble molecules
The rate sped up by enzymes
How does an enzyme speed up rate of reactions without being changed or used up
The enzyme lowers the activation energy required for the reaction to occur
What are enzymes made up of
Chains of amino acids folded into a globular shape
What shape does the enzyme substrate fit into
Active site
Enzymes
Proteins which are biological catalysts which speed up the rate of reactions
Enzymes function in the digestive system
Break down food and aid digestion
What happens when an enzyme is in extremes of pH or temperature
The enzyme will denature
Denature
The bonds holding the 3D shape of active site will break and active site deforms
Substrate doesn’t fit in active site and enzyme cannot function
Amylase
Reactant -
Product -
Starch
Sugars (glucose)
Protease
Reactant -
Product -
Protein
Amino acids
Lipase
Reactant
Product
Lipid
Glycerol and fatt acids
Examples of enzymes
Amylase
Protease
Lipase
Where is bile produced and stored
Produced in liver
Stored in gall bladder
