Bioligy test Flashcards
What are the basic building blocks for all life?
cells.
What is a tissue?
A group of cells with a similar structure and function.
A group of tissues performing a specific function.
Organ
What is a organ system?
Organs organised into organ systems, which work together to form organisms.
What does digestion convert food to?
small soluble molecules.
What produces amylase enzyme in saliva?
The salivary glands.
What is the muscular tissue in the stomach used for?
Churning food.
What does the glandular tissue in the stomach create?
Hydrochloric acid and protease.
What produces bile, and where is it stored?
Bile neutralises stomach acid and emulsifies fats. It’s stored in the gall bladder.
What enzymes do the pancreas produce?
protease, carbohydrates and lipase.
What enzymes does the small intestine produce, and what does it absorb?
protease, carbohydrates and lipase. It absorbs nutrients.
What does the large intestine absorb?
water.
What are enzymes and what are they made form?
Biological catalysts. They are made form protein.
What do enzymes have?
An active site that binds substrate.
What does the shape of the active site determine?
The shape of the substrate, like a lock and key.
What do enzymes have?
An optimum temperature and pH.
What happens if the enzyme is too high a temperature or at wrong pH?
Its active site changes shape and becomes denatured.
What carbohydrate brakes down starch into simple sugars?
Amylase.
What brakes down proteins into amino acids?
Proteases.
What is the job of lipases?
To brake lipids (fats) down into fatty acids and glycerol.
What is reducing sugars tested by?
Benedict’s test.
What happens if the results are positive?
They turn brick red colour.
How do we test for iodine?
Starch.
What happens if the results are positive?
The results are blue-black colour.
