Metablism Flashcards
Catabolic processes?
Destructive metabolic processes during which complex substances are broken down into simpler ones
Examples of catabolic processes
Cellular respiration
Chemical digestion
Break from of fat to form glucose
Destruction of bone to release calcium
Anabolic reactions
Are building reactions, in which simple molecules are made into more complex substances
Examples of anabolic reactions
Protein synthesis to make hormones, dna replication
Enzymes
Are proteins that catalyse, without themselves being altered
Features of enzymes
All enzymes are proteins
All enzymes speed up
Enzymes are not used up in chemical reaction
All enzymes are reaction specific
Each enzyme works under specific conditions
Enzymes often work in systems with co enzymes
Enzymes can be denatured by heating
Explain the enzyme lock and key model
- The enzymes joints the substrate at the active site to form an enzyme substrate complex
- The enzymes lowers the activation energy required for the chemical reaction, causing the bonds between the substrate to be destroyed.
- The enzymes releases the products. It is unchanged and will move onto catalyst other reactions
Passive transport is what ? The three steps that are passive
Passive- cell doesn’t use energy
1 diffusion
2 facilitated diffusion
3 osmosis
Active transport is? The three types ?
Active- cells does use energy
1. Protein pumps
2 endocytosis
3 exocystosis
Passive moves from high to low concentration? True or false
True
Active transport moves form low to high concentrations, against the concentration gradient ?
True
What is cellular respiration
Is your cells ability to break down glucose to release energy
What is the formula for cellular respiration ?
Glucose + water = carbon dioxide and water and energy
What is metabolism
Is the total of all the chemical processes that take place in the body
