Organisation Flashcards
What is a cell?
The smallest structural and functional unit of an organism.
What is a tissue?
A group of similar cells with a similar structure and function.
What is an organ?
A group of tissues working together to perform a specific function.
What is an organ system?
A group of organs working together to perform a specific function.
What is an organism?
A group of organ systems working together.
What is a digestive system?
The digestive system is an example of an organ system where different organs work together to digest and absorb food.
What is digestion?
Digestion is where large insoluble molecules are broken down into smaller soluble ones that can be absorbed into the bloodstream. Digestion occurs in the GUT (tube from the mouth to the anus) and it relies on ENZYMES (biological catalysts).
What is the ‘lock and key theory’?
It’s a model that shows how the enzymes only fit certain substrates.
What happens to enzymes when they get too hot?
They denature (the active site will no longer fit the substrate)
What happens to enzymes if they are in the wrong PH?
They will work slower or they will denature (the active site will no longer fit the substrate)
Where is carbohydrase (amylase) made?
The salivary glands (mouth), the pancreas and the small intestine.
Where is protease made?
The stomach, the pancreas and the small intestine.
Where is lipase made?
The pancreas and the small intestine.
What does amylase (carbohydrase) digest?
Carbohydrates (starch)
What do starch (carbohydrates) break down into?
Sugars and glucose
