B4- Respiration And Metabolism Flashcards
What is respiration?
The process of transferring energy from the breakdown of glucose, occurring in every cell continuously.
True or False: Respiration is the same as breathing in and out.
False
What type of process is respiration?
Exothermic
How do organisms use the energy transferred by respiration? List three examples.
- To build up larger molecules from smaller ones
- To allow muscles to contract
- To maintain body temperature in mammals and birds
What is metabolism?
All the chemical reactions in an organism.
What role do enzymes play in metabolism?
They control the chemical reactions happening in a cell.
Fill in the blank: The total of the reactions that happen in a cell or the body is called its _______.
[metabolism]
What are the two types of reactions involved in metabolism?
- Reactions that build larger molecules from smaller ones
- Reactions that break down larger molecules into smaller ones
Give an example of how smaller molecules form larger molecules in metabolism.
Small glucose molecules are joined together to form starch, glycogen, and cellulose.
What is produced when excess protein is broken down?
Urea
True or False: Respiration occurs only in animals.
False
What is the main source of energy for respiration?
Glucose
What do lipid molecules consist of?
One molecule of glycerol and three fatty acids.
Fill in the blank: Respiration transfers energy to power all the reactions in the body that make _______.
[molecules]
