2.1 Metabolic Pathways Flashcards
What are metabolic pathways?
A series of chemical reactions that start with a substrate and result in a product and are integrated and controlled by enzymes.
What are the 2 types of metabolic pathways?
Reversible or irreversible. Important to know that some reactions can have alternative routes involving the forming of different products from the same substrates.
What is an anabolic reaction?
A reaction that build’s up smaller molecules into larger molecules. These reactions require energy.
What is a catabolic reaction?
A reaction that breaks down larger molecules into smaller molecules. These reactions release energy.
What 3 proteins are embedded in membranes of cell structures?
Pores, pumps and enzymes.
What types of proteins are enzymes?
Globular proteins.
How do enzymes affect reactions?
They speed up reactions as they are biological catalysts.
How is the activation energy of a reaction affected by an enzyme?
The activation energy is lowered.
What type of affinity does a substrate have for an active site?
High affinity.
What type of affinity does a product have for an active site?
Low affinity.
What is an induced fit?
When the active site on the enzyme changes shape in order to better fit the substrate after it has bound.
