Respiration Flashcards
What is respiration?
Respiration is a catabolic process within cells whereby biomolecules like glucose are broken down with the release of energy.
What is external respiration?
Another name for breathing.
The process of taking air in and out of the lungs.
What is aerobic respiration?
The controlled release of energy from food with the use of oxygen.
What is anaerobic respiration?
The release of energy from food with no use of oxygen.
What is fermentation?
The anaerobic respiration of sugar. Occurs in: Muscles lacking oxygen. Yeast. Some bacteria.
What is the cell cytosol?
The liquid part of the cytoplasm which contains no suspended organelles.
What is metabolism?
The sum of all the chemical reactions taking place in a living organism.
What are anabolic reactions?
Provide suitable examples.
Involve the building up of smaller more simpler molecules into larger more complex ones. Requires energy. Examples: Photosynthesis. Protein synthesis. DNA replication.
What are catabolic reactions?
Provide suitable examples.
Involve the breakdown of larger more complex molecules into smaller more simpler ones. Releases energy. Examples: Respiration. Digestion.
What are biomolecules?
Chemicals that contain carbon and are formed inside living things. Examples: Proteins. Carbohydrates. Lipids. Vitamins.
What is an energy carrier?
A molecule that traps and transfers energy.
What does ADP stand for?
Adenosine Diphosphate.
How is the structure of ADP formed?
The base adenine combines with the sugar ribose(5C) to form adenosine.
It then connects with 2 phosphates which have a low energy unstable bond.
What is the role of ADP?
It is a low energy carrier.
It traps energy and combines with a phosphate forming ATP.
What is phosphorylation?
The process of adding a phosphate to a molecule.