Carbohydrates/Lipids/Proteins. Flashcards
Define “metabolic rate”.
The speed at which chemical reactions in your cells transfer energy from its chemical stores in food.
The higher your metabolic rate, the ____ food you need to eat.
More.
Foods rich in carbohydrates and fats provide you with what?
Energy to move and stay alive.
Protein-rich foods are used for what?
The growth and repair of body tissues.
The more active you are, the ____ energy you need.
More.
Read the sentences aloud but with the correct option:
Some carbohydrates are polymers/monomers. They are made from smaller carbohydrate molecules such as sugars/fats.
a) polymers.
b)sugars.
Name two different types of sugars:
Sucrose (used in making cakes).
Lactose (found in milk).
Starch is an example of a ______ polymer. It is synthesised from glucose ______ . Plants often convert ______ into starch. ______ is a chemical energy store.
a) carbohydrate.
b) monomers.
c) glucose.
d) Starch.
What enzymes break down carbohydrates?
Carbohydrase enzymes- the one that breaks down starch is called amylase.
Are proteins polymers or monomers?
Polymers formed from amino acids.
How many types of amino acids are there?
Approximately 20.
The order in which the ____________ are joined determines the _______ that is synthesised.
a) Amino Acids.
b) Protein.
Protein is broken down into amino acids by what enzyme?
Protease.
What are lipids?
Lipids are the fats and oils that you eat.
Are lipids polymers?
Lipids aren’t polymers since they lack a monomer unit.
What are lipids used for?
They are a good store of energy, and some animals, such as seals, use them for insulation and buoyancy.
What are lipids synthesised from?
Lipids are synthesised from three fatty acid molecules and a glycerol molecule.
What enzyme breaks down lipids and what are they broken down into?
Lipase enzymes break down lipids into fatty acids and glycerol.
Once food molecules are fully digested (into 🌸🌺🌻🌼), they are absorbed into your bloodstream. They then travel to the cells that need them.
🌸 soluble glucose.
🌺 amino acids.
🌻 fatty acids.
🌼 glycerol.
