Podcast
Questions and Answers
What are the processes that perform the maintenance job in living organisms?
What are the processes that perform the maintenance job in living organisms?
Life processes
Why do organisms need additional raw material from outside if their body size is to grow?
Why do organisms need additional raw material from outside if their body size is to grow?
To provide building material for growth
What is needed to transfer energy from outside the body of an organism to the inside?
What is needed to transfer energy from outside the body of an organism to the inside?
Nutrition
What are the most common chemical means used by organisms to break down molecules?
What are the most common chemical means used by organisms to break down molecules?
Why do many organisms use oxygen sourced from outside the body?
Why do many organisms use oxygen sourced from outside the body?
Why might single-celled organisms not require specific organs for gas exchange?
Why might single-celled organisms not require specific organs for gas exchange?
What is respiration?
What is respiration?
Why do multi-cellular organisms require a transportation system for food and oxygen?
Why do multi-cellular organisms require a transportation system for food and oxygen?
How do multi-cellular organisms ensure all parts of the body receive necessary nutrients and oxygen?
How do multi-cellular organisms ensure all parts of the body receive necessary nutrients and oxygen?
What problem arises when food and oxygen are taken up at one place in multi-cellular organisms?
What problem arises when food and oxygen are taken up at one place in multi-cellular organisms?
