Life Processes
Life Processes
Embedded Files
Why does an organism need to adapt to its environment?
An organism's adaptations allow them to successfully carry out life processes in their particular habitat.
Most living things carry out 7 or 8 common live processes.
As we discover more about life on Earth science ideas can change.
Whāinga/Purpose:
Whāinga/Purpose:
Learning intention: To demonstrate an understanding of gas exchange in insects, fish, and mammals
Success criteria: Investigate the processes of diffusion and ventilation and how insects, fish and mammals carry out gas exchange
Hei Mahi/Do now!
Hei Mahi/Do now!
What does the mnemonic 'MRSGREN' stand for?
This can be further modified to 'MRSCGREN'
What do you think the 'C' stands for?
What are life processes?
What makes something a living thing?
They carry out the seven life processes!
There are certain basic vital processes, which are essential for an organism to stay healthy and to maintain the proper functioning of the body’s organ systems.
They are necessary for survival.
These basic essential activities performed by an organism are called life processes.
What life process do you think gas exchange is related to?
(Cellular) Respiration
(Cellular) Respiration
Investigating Gas Exchange
Investigating Gas Exchange
Mahi/Activities
Correlative Respiratory Systems.pdfCorrelative Respiratory Systems
Correlative Respiratory Systems
Respiration relies on the efficient gas exchange between the organism and their environment.
How do different animals carry out gas exchange?
*Insert colouring in page
*Earthworm cf insect, fish and mammal
*meeting the same demand in different ways
Terrestrial vs Aquatic Environments
Terrestrial vs Aquatic Environments
Organisms meet the demand for gas exchange differently in terrestrrial vs aquatic environments.
What are the advantages and limitations in each environment?
What is the major difference in the gas exchange structures?
Why is this?
Diffusion
Diffusion
Diffusion is the process that underpins the transport of oxygen and carbon dioxide in organisms.
What is diffusion?
How does it work?
Why does size matter?
Note: Biozone External Workbook
Diffusion and Cell Size - Activity 13, pg. 22 & 23
Ventilation & Efficiency
Ventilation & Efficiency
Ventilation is the process of delivering oxygen and carbon dioxide for diffusion across a respiratory membrane. Efficient delivery of the gases to the respiratory membranes as well as efficient transport across the membranes is needed.
How do insects ventilate?
Watch the video on active ventilation in insects
How do fish ventilate?
Complete the counter-current gas exchange simulation activity
How do mammals ventilate?
Watch and take notes during the model lung demonstration
Gas Exchange Starting Rauemi/Resources:
And dissection alternatives for insects. fish and mammals
Gas Exchange in Animals.pdfGas Exchange in Animals
Gas Exchange in Animals
No brain too small summary
Gas Exchange in Animals
Gas Exchange in Animals
Video
Gas Exchange & Transport
Gas Exchange & Transport
Video
You should do your own additional research to source further information!
You should do your own additional research to source further information!
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