GCSE BIOLOGY B3

Question 1

Tissue

Answer 1

Group of cells with a similar structure and function working together

Question 2

Organs

Answer 2

Are collections of tissues, each organ contains several tissues all working together to perform a specific function

Question 3

3 types of tissue

Answer 3

Muscular, Glandular and epithelial

Question 4

Organ systems

Answer 4

Groups of organs thta all work together to perform specific functions

Question 5

Digestive system

Answer 5

One of the major organ systems in the body,
Process of digestion takes place here
Breaks down large insoluble molecules into smaller soluble molecules which then can be absorbed by your cells

Question 6

Digestive system

Answer 6

Mainly happens in the stomach and two instestines

Question 7

Carbohydrates

Answer 7

Provides us with the fuel that makes all the other reactions of life possible

Question 8

Lipids

Answer 8

Are fats and oils, are the most efficient energy store in the body and are an important source of energy in the diet

Question 9

Proteins

Answer 9

Used to build up the cells and tissues in your body, as well as the basis of all enzymes in your body.
Around 15% of you body is proteins

Question 10

Enzyme

Answer 10

a substance produced by a living organism which acts as a catalyst to bring about a specific biochemical reaction.
Rate of chemical reactions is controlled by enzymes

Question 11

Digestive enzymes

Answer 11

Work outside your cells
The enzymes pass out of specialised cells into the digestive system, where they come into contact with the food molecules

Question 12

Digesting carbohydrates

Answer 12

Enzymes which break carbohydrates are called carbohydrases

Question 13

Digesting proteins

Answer 13

The breakdown of protein foods into amino acids is catalysed by protease enzymes

Question 14

Digesting fats

Answer 14

Lipids are broken down into fatty acids and glycerol, then catalysed by lipase enzymes