1. Active Transport
B4d

2. Odd One Out
Iron
Potassium
Phosphorus
Magnesium
Nitrogen

3. Task
Analyse the data on mineral content in natural and artificial fertilisers.
Complete worksheet B4d1 (Grade D/E)
5-10 minutes.
What are the key minerals needed by plants?
Why do they need them?

4. OBJECTIVES Key Objective
Describe the importance of mineral uptake for healthy growth in plants and how it is down
Describe the role of minerals in healthy plant growth (D)
Describe the signs of mineral deficiency in plants (C)
Describe the function of active transport (B)
Explain why active transport is necessary (A)
Explain why active transport needs energy (A*)

5. Minerals in Plants Mineral Use Deficiency symptoms Explanation
Nitrate ions (NO3)
Building proteins and growth
Poor growth and yellow leaves
All amino acids contain nitrogen. Amino acids are the building blocks of protein.
Phosphate ions (PO4)
Respiration and growth
Poor root growth and discoloured leaves
A component of DNA molecules and cell membranes
Potassium ions (K+)
Respiration and photosynthesis
Poor flower and fruit growth, discoloured leaves
Must be present for photosynthesis and respiration enzymes to work
Magnesium ions (Mg2+)
Photosynthesis
Yellow leaves
Chlorophyll molecules contain magnesium ions. It's the magnesium that makes chlorophyll green.

6. Task
Split a double page spread in your book into 4 sections with the following headings in each:
The minerals needed by plants (D)
Signs of deficiency (C)
What the plant uses them for (B)
Fill each section – 15 minutes.
Leave the 4th section for now – you will fill that in later.
How does the plant get these minerals? Where from?

7. Active transport
To movement of substances against a concentration gradient and/or across a cell membrane
The process uses energy

12. Rate of active transport depends on the rate of respiration
Rate of respiration

13. Why? Important in both plants & animals
Allows the absorption of dilute minerals into the plant against a concentration gradient
ANIMALS
Allows the absorption of glucose (essential for respiration within nervous tissue) into the blood from the kidneys and ileum against a concentration gradient

14. and. depend on a. gradient in the right direction to work
and depend on a gradient in the right direction to work. Substances are moved a gradient by which uses produced by
Osmosis Active Energy
Respiration Diffusion Concentration
Against Transport

15. Questions Explain how active transport works in a cell
Give some examples of a situations when a substance cannot be moved into a cell by osmosis or diffusion, and how active transport solves the problem
The processes of diffusion and osmosis do not need energy to take place. Why does an organism have to provide energy for active transport and where does it come from?
Explain why cyanide is such an effective poison

16. Place these features in the correct part of the Venn Diagram
DIFFUSION
OSMOSIS
Place these features in the correct part of the Venn Diagram
Involves water only
Requires energy
Is passive
Movement of particles
Needs a semi-permeable membrane
High to low concentration
Against a concentration gradient
Occurs in nature
How minerals get into root hair cells
How oxygen leaves a leaf
How water keeps plant cells turgid
Involves transport of solutes
ACTIVE TRANSPORT

17. What was your score…? DIFFUSION OSMOSIS ACTIVE TRANSPORT
Involves water only
How oxygen leaves a leaf
Is passive
High to low concentration
How water keeps plant cells turgid
Movement of particles
What was your score…?
Occurs in nature
Involves transport of solutes
Needs a semi-permeable membrane
Requires energy
How minerals get into root hair cells
Against a concentration gradient
ACTIVE TRANSPORT