What do carbohydrates do BBC Bitesize?

Carbohydrates are an important source of energy. They fuel the processes in your body. Carbohydrates are broken down by the body into glucose, which can be absorbed into the bloodstream. Once absorbed, glucose molecules travel in the blood to the body’s cells where they are used for respiration.

What is a carbohydrate ks2?

Bread, cereals, pasta, rice, and sweet foods are mostly carbohydrates. You need them to give you energy. There are two types of carbohydrates, sugars and starches, which your body breaks down into a simple form of sugar called glucose.

What is a monosaccharide BBC Bitesize?

The basic building block of a carbohydrate is a monosaccharide. This is simple sugar, such as glucose and fructose. Enzymes join monosaccharides together to form disaccharides (two monosaccharides) and polysaccharides (long chains of monosaccharides).

What are polysaccharides BBC Bitesize?

Starch (found in plants) and glycogen (found in animals) are polysaccharides. They consist of many glucose molecules joined together.

What are simple carbohydrates BBC Bitesize?

Simple carbohydrates are sugars, like glucose and lactose. They are a fast acting source of energy, like biscuits or energy bars. Complex carbohydrates are a source of slow release energy, like rice and pasta. Cellulose, starch and glycogen are complex carbohydrates.

Why do we need carbohydrates GCSE?

The body needs carbohydrate for a number of reasons: for energy – 1g of carbohydrate gives the body 3.75kcal of energy. wholegrain varieties of carbohydrate provide the body with fibre. carbohydrate has a protein-sparing effect, allowing protein to be used for its primary function of growth and repair.

Where is Carbohydrase produced?

Carbohydrase enzymes are produced in your mouth (in saliva), pancreas and small intestine.

What are enzymes BBC Bitesize ks3?

Enzymes are protein molecules which act as catalysts to speed up reactions. They are not used-up in these reactions. Enzymes can be grouped into two types: Those that break larger molecules apart (like digestive enzymes).

What elements are in proteins BBC Bitesize?

Proteins contain carbon, hydrogen, oxygen and nitrogen.

What is protein BBC Bitesize?

Proteins are large molecules made from smaller units of amino acids . The structure of two amino acids. There are only about 20 different naturally-occurring amino acids. However, each protein molecule has hundreds, or even thousands, of them joined together in a unique sequence and folded into the correct shape.

Why do we need carbohydrates ks2?

Carbohydrates are broken down by the body into simple sugars. These sugars circulate in the bloodstream and are used by the body’s cells for energy. The brain also uses one of these simple sugars (glucose) as its primary energy source. This is why children need carbohydrates to stay alert and active throughout the day.