Enzyme 3.0 / 5 based on 1 rating ? BiologyBiological moleculesASAQA Created by: HannahCavielCreated on: 09-02-17 11:15 what is an enzyme? a biological catalyst for metabolic reactions 1 of 27 does an enzyme speed up or slow down a reaction? speed up 2 of 27 what is a metabolism the sum of thousands of biochemical reactions in the body 3 of 27 do enzymes increase or decrease the activation energy needed for a reaction to occur? decrease 4 of 27 is the lock and key theory more or less detailed than the induced fit model less 5 of 27 what does the induced model help us to understand about enzymes? explains why enzymes are so specific 6 of 27 what does the induced fit model show that the lock and key theory doesn't that the enzyme-substrate complex changes shape to make an exact fit 7 of 27 how is the enzymes active site described when compared to a substrate complementary 8 of 27 what structure is related to the enzymes properties? tertiary 9 of 27 what does an active site ensure? that only one specific substrate can fit into the enzyme 10 of 27 what term is used to describe an enzyme that acts outside of cells? extracellular 11 of 27 what would happen if a mutation occured in the structure of the enzyme the active site could change shape and so the substrate would no longer fit 12 of 27 name one way that rate of reaction can be measured how fast the substrate is broken down 13 of 27 name another way that rate of reaction is measured how fast the product is made 14 of 27 how does temperature affect rate of reaction it can denature the enzymes 15 of 27 what is the point called whe the factor no longer is beneficial to the enzyme optimum temperature/pH 16 of 27 what is the optimum temperature for most human enzymes 37 17 of 27 do different enzymes have different optimum temperatures? yes 18 of 27 what pH do most human enzymes work best at? 7 19 of 27 what part of the enzyme could be damaged by pH the hydrogen and ionic bonds 20 of 27 what is the point called when the effect of substrate concentration is no longer a factor saturation point 21 of 27 does a competitive inhibitor attach to the active site or to the enzyme body active site 22 of 27 why can a competitive inhibitor bind to the active site because it is a similar shape to the substrate 23 of 27 how can the effects of a competitive inhibitor be reversed? by adding more substrate 24 of 27 does a competitive inhibitor increase or decrease the rate of reaction decrease, but not dramatically 25 of 27 will increasing the substrate concentration increase or decrease the effect of the non-competitive inhibitor it will have no effect 26 of 27 does a non-competitive inhibitor increase or decrease the rate of reaction decrease dramatically 27 of 27
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