transport these blood cells have been put in three different solutions. the solutions were:...
TRANSCRIPT
TransportThese blood cells have been put in three
different solutions.
The solutions were: distilled water, sugar water and an isotonic sports drink. Which cells were in
which solution? Justify your choice.
Active Transport
• Lesson Learning Outcomes:
Increasing Difficulty
When does transport require energy?
Define the term active transport
Explain why energy is
required by active
transport
Suggest why active
transport is important in
plants
Back to back
One person should describe what they see on the board,
the other person should draw it based on their description
Atmospheric Nitrogen
Water-logged Soil
Nitrate
Absorption
Feeding and
digestion Death and Excretion
Dead Organic Matter
Ammonium Ions
AmmonificationNitrification
Denitrification
Nitrogen Fixation
Nitrogen Fixation
Leguminous Plants
Nitrifying Bacteria
Free Living Nitrogen Fixing
Bacteria
Denitrifying Bacteria
Nitrogen Fixing
Bacteria
Fertilisers
• Farmers and gardeners add fertilisers to soil
• They usually contain NKP (Nitrogen, potassium and phosphates)
• How do plants absorb the nitrates from the soil?
Consensus placemat
• Plants need nitrates to make proteins. By what process do they get into the plant?
• What would happen if the concentration of nitrates was lower in the soil than in the plant?
Movement in and out of cells
Substances move in and out of cells by passive and active transport. Which methods of transport are illustrated?
What is active transport?Substances can move passively in and out of cells by diffusion until the concentration on both sides of the cell membrane reaches an equilibrium.
Substances can continue to move in and out of a cell using a process called active transport.
As the name suggests, active transport requires energy from the cell, which is made available by respiration.
During active transport, protein carriers in the cell membrane ‘pick up’ particles and move them against the concentration gradient.
What is active transport?
Active transport in plantsPlants need to absorb mineral elements such as nitrogen, phosphorus and potassium from the soil for healthy growth.
When the concentration of minerals in soil is lower than inside the plant, active transport is used to absorb the minerals against the concentration gradient.
What would happen if the plant relied on diffusion to absorb minerals?
The cells would become drained of minerals because they would travel down the concentration gradient.
minerals
Active transport in humansDuring digestion, the villi in the small intestine absorb the soluble nutrients. Over time, the concentration of nutrients in the villi reach an equilibrium with the concentration in the gut.
Active transport is used to continue the transport of the small amounts of remaining nutrients against the concentration gradient.
glucose
Quiz Quiz trade
• Find out more about where active transport might be used.
Venn Diagram
OSMOSIS
DIFFUSIONACTIVE TRANSPORT
Getting stuff in and out
• On your plant summarise how all the different substances are transported in and out