Transcript 8A Unit 3 Test Jeopardy Review

Vocabulary
Fun with
Graphs
Macromolecules
Chemical
Reactions
Enzymes
10
10
10
10
10
20
20
20
20
20
30
30
30
30
30
40
40
40
40
40
50
50
50
50
50
Question 1 - 10
• Define “element”
Answer 1 – 10
• A pure substance that consists of one type of
atom
Question 1 - 20
• Define “dehydration synthesis”
Answer 1 – 20
• Joining molecules together that results in a
loss of water
Question 1 - 30
• Relate the following words in a sentence:
– Catalyst,
– enzyme,
– activation energy
Answer 1 – 30
• Enzymes are catalysts that lower activation
energy
Question 1 - 40
• Define “denaturation”
Answer 1 – 40
• Breaking of a protein
Question 1 - 50
• Explain the difference between ionic bonding
and covalent bonding
Answer 1 – 50
• Ionic bond involves a transfer of electrons,
and covalent bonding involves a sharing of
electrons
Question 2 - 10
• Is this graph showing an exothermic or
endothermic reaction?
Answer 2 – 10
• exothermic
Question 2 - 20
• What is this enzyme’s optimum temperature?
Answer 2 – 20
• 40 degrees C
Question 2 - 30
• Which statement best expresses the information
represented in the graph shown?
– (1.) The action of enzymes varies with pH.
– (2.) A pH of 7 provides the optimum
environment for digestive enzymes
– (3.) Gastric juice is active at a pH extending from
0 to 12.
– (4.) Acids have a pH greater than 7.
Answer 2 – 30
• (1). The action of enzymes varies with pH
Question 2 - 40
• Draw a graph representing an endothermic
reaction. Be sure to label reactants, products,
Ea, and ΔH
Answer 2 – 40
Question 2 - 50
• Increasing [substrate] will increase the reaction rate to a certain point.
Based on the graph below, what [substrate] allows the enzymes to work at
half their maximum velocity? (Assume each box represents 5mL)
Answer 2 – 50
• 2.5 mL
Question 3 - 10
• Name the 4 types of macromolecules
Answer 3 – 10
• Carbs, proteins, lipids, and nucleic acids
Question 3 - 20
• Name the primary function of nucleic acids
Answer 3 – 20
• Store the genetic information
Question 3 - 30
• Name the main function of carbs
Answer 3 – 30
• Body’s main source of energy
Question 3 - 40
• What are the monomers of carbs?
Answer 3 – 40
• monosaccharides
Question 3 - 50
• Draw the structure of an amino acid
Answer 3 – 50
Question 4 - 10
• What are the reactants of a chemical
reaction?
Answer 4 – 10
• What you start with
Question 4 - 20
• What is the difference between an exothermic
and an endothermic reaction?
Answer 4 – 20
• Exothermic—lose energy/heat,
endothermic—gain energy/heat
Question 4 - 30
• Breaking a bond ________ energy
Answer 4 – 30
• releases
Question 4 - 40
• What is activation energy?
Answer 4 – 40
• Energy required to start a reaction
Question 4 - 50
• Which type of reactions will occur
spontaneously?
– A. endothermic
– B. exothermic
Answer 4 – 50
• B. exothermic
Question 5 - 10
• What is are substrates?
Answer 5 – 10
• The reactants of an enzyme-catalyzed reaction
Question 5 - 20
• How do enzymes increase the rate of a
chemical reaction?
Answer 5 – 20
• Lower the activation energy
Question 5 - 30
• What is the name of the model that describes
the precise fit between an enzyme and its
substrate
Answer 5 – 30
• Lock and key model
Question 5 - 40
• Explain the induced fit theory
Answer 5 – 40
• Enzyme changes shape slightly to “hug” the
substrate
Question 5 - 50
• Name 4 factors that affect the rate of enzyme
activity
Answer 5 – 50
•
•
•
•
Temperature
pH
[enzyme]
[substrate]