Unit 2.1 Metabolic Pathways and Control

Question 1

Metabolic activity which synthesises (builds up) complex molecules, requires energy.

Answer 1

anabolic

Question 2

Metabolic activity which breaks down complex molecules, releases energy.

Answer 2

catabolic

Question 3

Small membrane bound region of a cell.

Answer 3

compartment

Question 4

Sequence of chemical reaction in a cell, controlled by enzymes

Answer 4

metabolic Pathway

Question 5

All of the metabolic pathways in an organism

Answer 5

metabolism

Question 6

Membrane of the cell made from phospholipid molecules and proteins

Answer 6

phospholipid membrane

Question 7

A gap in the membrane caused by a channel forming protein.

Answer 7

pore

Question 8

A protein found in the phospholipid membrane which carries molecules across via active transport.

Answer 8

Pump

Question 9

The energy required to start a chemical reaction

Answer 9

Activation Energy

Question 10

The region of an enzyme which allows the substrate to bind

Answer 10

Active Site

Question 11

Occurs when a substance that is similar to the substrate binds to the active site and slows down the chemical reaction. Can be reversed by increasing the substrate concentration.

Answer 11

Competitive Inhibitor

Question 12

Occurs when the end product of an enzyme reaction slows down the rate of reaction.

Answer 12

Feedback Inhibition

Question 13

A change to the active site caused by the substrate molecule to allow for a better fit.

Answer 13

Induced Fit

Question 14

Occurs when a substance binds to a part of an enzyme that is not the active site, altering the shape of the active site and therefore slowing the rate of reaction.

Answer 14

Non Competitive Inhibition

Question 15

The result of an enzyme catalysed reaction

Answer 15

Product

Question 16

The substance on which the enzyme acts.

Answer 16

Substrate

Question 17

Formed when several enzymes act in groups

Answer 17

Multiple enzyme complexes

Question 18

The reaction can take place in more than one direction

Answer 18

Reversible

Question 19

The attraction of a substrate (high) or product (low) to the active site of an enzyme.

Answer 19

Affinity

Question 20

anabolic

Answer 20

Metabolic activity which synthesises (builds up) complex molecules, requires energy.

Question 21

catabolic

Answer 21

Metabolic activity which breaks down complex molecules, releases energy.

Question 22

compartment

Answer 22

Small membrane bound region of a cell.

Question 23

metabolic Pathway

Answer 23

Sequence of chemical reaction in a cell, controlled by enzymes

Question 24

metabolism

Answer 24

All of the metabolic pathways in an organism

Question 25

phospholipid membrane

Answer 25

Membrane of the cell made from phospholipid molecules and proteins

Question 26

pore

Answer 26

A gap in the membrane caused by a channel forming protein.

Question 27

Pump

Answer 27

A protein found in the phospholipid membrane which carries molecules across via active transport.

Question 28

Activation Energy

Answer 28

The energy required to start a chemical reaction

Question 29

Active Site

Answer 29

The region of an enzyme which allows the substrate to bind

Question 30

Competitive Inhibitor

Answer 30

Occurs when a substance that is similar to the substrate binds to the active site and slows down the chemical reaction. Can be reversed by increasing the substrate concentration.

Question 31

Feedback Inhibition

Answer 31

Occurs when the end product of an enzyme reaction slows down the rate of reaction.

Question 32

Induced Fit

Answer 32

A change to the active site caused by the substrate molecule to allow for a better fit.

Question 33

Non Competitive Inhibition

Answer 33

Occurs when a substance binds to a part of an enzyme that is not the active site, altering the shape of the active site and therefore slowing the rate of reaction.

Question 34

Product

Answer 34

The result of an enzyme catalysed reaction

Question 35

Substrate

Answer 35

The substance on which the enzyme acts.

Question 36

Multiple enzyme complexes

Answer 36

Formed when several enzymes act in groups

Question 37

Reversible

Answer 37

The reaction can take place in more than one direction

Question 38

Affinity

Answer 38

The attraction of a substrate (high) or product (low) to the active site of an enzyme.