Biochemical Reactions Flashcards
The alteration of a protein shape through some form of external stress
Denaturation
The 4 factors that influence enzyme activity
- temperature
- pH
- cofactors & coenzymes
- inhibitors
The portion of the enzyme that is needed for proper enzymatic activity, exclusively synthesized by bacteria
Cofactors/Coenzymes
The 2 types of enzyme inhibitors
- competitive inhibitor
- non-competitive inhibitor
Refers to the sum of all chemical reactions in a cell or organism
Metabolism
A type of chlorophyll involved in light reactions
Chlorophyll a
A type of chlorophyll that assists in capturing light energy
Chlorophyll b
Refers to a series of reactions where the product of one reaction is consumed in the next
Biochemical Pathways
Double membrane organelles that absorb light energy
Chloroplasts
Flattened sacs in the chloroplast that contain the chlorophyll pigments
Thylakoids
Layered thylakoids inside the chloroplast
Grana
The solution around thylakoids
Stroma
The 3 components of ATP
- adenine
- ribose
- 3 phosphate groups
Breaking the last phosphate bond from ATP will produce these 3 products
- energy
- ADP
- a free phosphate group
A process wherein a free phosphate group can be re-attached to ADP, reforming ATP
Phosphorylation
The 3 stages of photosynthesis
- light reactions
- energy converted to chemical energy and stored in ATP & NADPH in stroma
- Calvin cycle
The photochemical splitting of water
Photolysis
A biochemical pathway in photosynthesis that produces organic compounds using ATP and NADPH
Calvin Cycle
Plants that use exclusively the Calvin Cycle (80% of plants)
C3 plants
The 3 steps in Calvin Cycle
- CO2 diffuses from cytosol and combines with RuBP which splits into a part or PGA
- PGA gets phosphate group from ATP and gets a proton from NADPH to become PGAL
- PGAL converts back to RuBP
Plants that evolved in hot, dry climates and uses both light-dependent and the Calvin Cycle (15% of plants)
C4 plants
Plants that evolved in hot, dry climates. Stomates are closed during the day and open at night (5% of plants)
CAM plants
The 3 factors that affect the rate of photosynthesis
- light intensity
- CO2
- temperature