Pages in this set

Page 1

Preview of page 1
Edexcel AS Bio Structure & Function
Examiners like asking you to relate structure to properties &
function.
You can use the form " X is like this because its function is Y, and its features help with this in
these ways..."

Eg. The structure of amylase has a spiral shape…

Page 2

Preview of page 2
5.......................................... 5.Prevents backflow of blood




Blood Structure Function
vessel
1 cell thick Reduces diffusion distance making
Capillary endothelium diffusion faster
Narrow lumen Slows down blood allowing exchange t
take place more efficiently
3. Connective tissue & 1.make them strong & durable
Artery collagen fibres
Note: arteries have 4. Muscle 2.Allows…

Page 3

Preview of page 3
Fill in the Functions




Structure Function
Left ventricle has thick wall

Ventricles have thicker walls than atria


Atrioventricular Valves


Semi Lunar Valves


Cords

Page 4

Preview of page 4
Structure Function
Has to pump blood around the body,
Left ventricle has thick wall longer distance than to the lungs.

Ventricles have thicker walls than atria Have to push blood out of the heart
which is a longer distance than from atria
to the ventricles.

Atrioventricular Valves Stop blood flowing…

Page 5

Preview of page 5
Carbohydrates-

Carbohydrat Structure Function
e
Glucose 1............................ 1.easily transported
2.Chemical bonds contain a lot of energy 2.good energy source for ...............
& animals

Sucrose 1. Reactive groups are joined to each 1. Good for transport in plants
other, making it...................
2.soluble
2. good for transport in .............
Amylose- joined glucose…

Page 6

Preview of page 6
- has no ................ effect good for stor

-insoluble -more glucose in a small space. good fo
storage
-compact




Carbohydrates-

Carbohydrat Structure Function
e
Glucose 1.Soluble 1.easily transported
2.Chemical bonds contain a lot of energy 2.good energy source for plants &
animals

Sucrose 1. Reactive groups are joined to each…

Page 7

Preview of page 7
Highly branched. Has 1, 4 and 1, 6 Can be rapidly hydrolysed, stor
Glycogen
glycosidic links. glucose can be released quickly
A lot of energy can be stored.
Large molecule


-insoluble - has no osmotic effect good for storag

-more glucose in a small space. good fo
-compact storage




Structure…

Page 8

Preview of page 8
Structure Function

Page 9

Preview of page 9

Comments

No comments have yet been made

Similar Biology resources:

See all Biology resources »See all resources »