GCSE Biology Paper 1 Organisation

Reorder the following

• Organism

• Tissue

• Organ

• Cell

• Organ System

Label the Digestive System

e

f

g

h

a

b

c

d

Oesophagus

Small intetine

Large Intestine

Salivary Glands

Gall Bladder

Stomach

Pancreas

Liver

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

Product

Enzyme Substrate Complex

Substrate

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