AnswersMiami Biology EOC SC.912.L.18.1 Structure and Function of MacromoleculesLipids

Catalysts Answers

10 verified answers
1
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If the activation energy required for a chemical reaction were reduced, what would happen to the rate of the reaction?

A
The rate would increase.
B
The rate would decrease.
C
The rate would remain the same.
D
The rate would be zero.
2
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Which statement correctly describes a chemical reaction?

A
Reactants come out of a reaction.
B
Energy is always released.
C
Bonds between atoms break and reform.
D
Products go into a reaction.
3

What is a substrate?

A
a molecule that acts as a catalyst
B
a place on the enzyme where the reaction occurs
C
a place on the product where the enzyme fits
D
a reactant that is catalyzed by an enzyme
4

A student wants to create a liquid volcano. The student observes bubbles in the soft drink prior to opening it. The student first proceeds to open the soft drink bottle and place it on the floor.Next the student drops candy tablets into the drink at a continuous pace. The student notices a very powerful reaction in which the candies, still intact, are pushed out of the soda as the drink fizzes and starts to bubble.In this scenario, what would be the catalyst?

A
The candy tablets being added to the drink.
B
The gasses being released when the drink was first opened.
C
The liquid in the container.
D
The container that holds the liquid.
5

Which component is released from the active site of an enzyme during a chemical reaction?

A
reactant
B
product
C
substrate
D
protein
6

Which is the best definition of activation energy?

A
the energy required to end a chemical reaction
B
the energy required to bind a substrate to an active site
C
the energy required to form or break the bonds of reactant molecules
D
the energy required to re-form bonds in product molecules
7

Which statement best describes how a catalyst can speed up a chemical reaction?

A
The catalyst decreases the activation energy needed.
B
The catalyst increases the concentration of products.
C
The catalyst binds to enzymes to release substrates.
D
The catalyst increases the concentration of reactants.
8

The lock-and-key mechanism refers to

A
the complementary shapes of an enzyme and a substrate.
B
the attractive forces between an enzyme and a substrate.
C
the ability of an enzyme to lower the activation energy of a reaction.
D
the ability of an enzyme to “unlock” the products of a reaction.
9

Lactase and carbonic anhydrase are examples of what type of substance?

A
substrate
B
reactant
C
product
D
enzyme
10

Which two substances bind using a lock-and-key mechanism?

A
enzyme and substrate
B
reactant and substrate
C
substrate and product
D
reactant and product

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