GCSE Biology Paper 1 Organisation

Reorder the following

• Organ System

• Cell

• Organ

• Organism

• Tissue

Label the Digestive System

e

f

g

h

a

b

c

d

Liver

Gall Bladder

Large Intestine

Pancreas

Oesophagus

Salivary Glands

Small intetine

Stomach

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

Enzyme Substrate Complex

Substrate

Product

Enzyme

Active Site

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