GCSE Biology Paper 1 Organisation

Reorder the following

• Organ System

• Cell

• Organ

• Tissue

• Organism

Label the Digestive System

e

f

g

h

a

b

c

d

Liver

Oesophagus

Stomach

Pancreas

Small intetine

Salivary Glands

Large Intestine

Gall Bladder

What organ produces bile?

Where is bile stored?

Where is hydrochloric acid produced?

Where are the majority of soluble nutrients absorbed?

Where are the majority of water absorbed from the faeces?

Which organ produces and secretes enzymes such as proteases, lipases and carbohydrases ?

Label the Diagram

b

c

d

e

a

Active Site

Product

Enzyme Substrate Complex

Substrate

Enzyme

In the "Lock and Key" theory the ​ (a)   is a the lock and the ​ (b)   is the key. The active site is on the ​ (c)   and has a specific shape that is complementary to the ​ (d)   .

• enzyme
• substrate