Unit 3 Flashcards
(54 cards)
Enzymes
Catalysis Reactions - or makes them faster
Key Points of Enzymes (4)
- They do not get consumed in the reaction
- They operate at a certain Temp and pH
- They lower the ‘Activation Energy’ or ‘hump’
- Enzymes bind to specific substrates
Substrate
The thing that the Enzyme binds to
Active Site
The site which the substrate and enzyme binds to
Inducted Fit
The enzyme changes SLIGHTLY to fit the substrate. Emphasis on slightly
Competitive Inhibition
This competes with the enzyme and binds FIRST to the active site, making the enzyme unable to bind
Non-competitive inhibition
It bind to a different site (allosteric) of a substrate, which triggers the closure of the active site, which prohibits the enzyme to bind
Regulatory Molecules of an enzyme(2)
Inhibitive - prevents enzyme
Activator - activates enzyme
Metabolism
the chemical reactions in the body’s cells that change food into energy
What are the two parts of Metabolism?
- Catabolism - breaks down (exothermic)
- Anabolism - builds up (endothermic)
Cofactors and Coenzymes
Helps the enzyme catalyze the reactions
What is the Enzyme that catalysis the production of ATP?
Kinase
autotrophs
produces its own food through photosynthesis
heterotrophs
eats other’s goods
eats glucose and breaks it down through cellular respiration
allosteric sites
the other site that non-competitive inhibition allosteric inhibitor binds to
What are the two parts of Photosynthesis?
- Light Reaction
- Light Independent/Calvin/ Dark reactions
What does light reaction do?
uses an electron transport chain to excite the electron.
ultimately produces
ATP
NADPH
O2
where does the light reaction take place?
thylakoid membranes
What does the light independent reaction do?
Fixes the carbon from floating CO2 to make sugar - glucose, which takes energy
where does the light independent reaction occur?
The stroma of the chloroplasts
Photolysis
the taking of electrons from H2O, making O2
chlorophyll a, b, carotenoids are all what
light absorbing pigments in photoelectron systems in photosynthesis
What is the absorption and emission spectrum of chlorophyll a, b, and carotenoids?
- absorb red and blue
- emits green
reaction center in a photosystem?
where the electron is “excited” to conduct photlysis
