AP Biology Unit 3: Cellular Energetics Practice Test (Multiple Choice)

Enzymes are often referred to as being "highly specific" (also referred to as enzyme specificity), meaning...

a. Each enzyme found in the body is unique and there are no other enzymes of that kind
b. The enzyme will only work in a specific environment
c. Only a specific substrate will bind to its active site
d. All substrates will bind to its active site except one type of substrate
e. Enzymes are found only in certain parts of the body

Enzymes are often referred to as being "highly specific" (also referred to as enzyme specificity), meaning...

a. Each enzyme found in the body is unique and there are no other enzymes of that kind
b. The enzyme will only work in a specific environment
c. Only a specific substrate will bind to its active site
d. All substrates will bind to its active site except one type of substrate
e. Enzymes are found only in certain parts of the body

C

In what aspect is the "lock and key" model incorrect?

a. It assumed the active site never changed
b. It assumed the active site changes when a substrate entered the active site
c. It assumed that enzymes only accepted one specific substrate
d. It assumed that enzymes accepted many different substrates
e. It assumed that the active site never change and that enzymes accepted many different substrates

D

Hydrolysis and cellular respiration are examples of what types of reactions?

a. Catabolic & Anabolic
b. Exergonic & Endergonic
c. Catabolic & Exergonic
d. Anabolic & Endergonic
e. Catabolic & Endergonic

C

What types of reactions have a net use of energy?

a. Catabolic & Anabolic
b. Exergonic & Endergonic
c. Catabolic & Exergonic
d. Anabolic & Endergonic
e. Catabolic & Endergonic

D

What type of inhibitor binds to the active site?

a. Competitive
b. Non-competitive
c. Active
d. Substrate
e. Protein

A

What type of inhibitor lowers the maximum rate of reaction?

a. Competitive
b. Non-competitive
c. Active
d. Substrate
e. Protein

B

How does ADP turn into ATP?

a. By adding an adenosine
b. By removing an adenosine
c. By adding a phosphate
d. By removing a phosphate
e. By adding an adenosine and removing a phosphate

C

The folded inner membrane in mitochondria increases its __________

a. Outer membrane size
b. Ability to get identified as mitochondria
c. Organelle size
d. Volume
e. Surface Area

E

Why do highly active cells have large amounts of mitochondria?

a. It increases the amount of ATP produced
b. It decreases the amount of ATP produced
c. It increases the amount of nutrients absorbed into the cell
d. It decreases the amount of nutrients absorbed into the cell
e. There is no significance to the large amounts of mitochondria as the same amount of ATP will be produced

A

What is the ultimate source of energy?

a. Thermal energy
b. Radiant energy
c. Electrical energy
d. Solar energy
e. Chemical Energy

D

Where does glycolysis occur?

a. Outer membrane of mitochondria
b. Inner membrane of mitochondria (Cristae)
c. Cytoplasm
d. Cellular membrane
e. Cytoskeleton

C

Where does the link reaction and Krebs cycle reactions occur?

a. Mitochondrial Cristae (Inner membrane)
b. Mitochondrial Matrix
c. Cytoplasm
d. Cellular membrane
e. Cytoskeleton

B

Where does the electron transport chain take place?

a. Mitochondrial Cristae (Inner membrane)
b. Mitochondrial Matrix
c. Cytoplasm
d. Cellular membrane
e. Cytoskeleton

A

What does the link reaction do?

a. ATP is produced and CO2 is removed
b. ATP is used and CO2 enters
c. Pyruvate and ATP is used and CO2 is removed
d. Pyruvate enters the mitochondrion and CO2 is removed
e. Pyruvate leaves the mitochondrion and CO2 enters

D

Which of the following produces the most ATP molecules?

a. Glycolysis
b. Link Reaction
c. Krebs Cycle
d. Electron Transport Chain
e. All of the above produce the same amount of ATP

D

The process in which ATP is produced as a result of the transfer of electrons from NADH + H+ and FADH2 to 02 by a series of electron carriers is called...

a. Oxidative Phosphorylation
b. Cellular Respiration
c. Electron Transport Chain
d. Fermentation
e. Chemiosmosis

A

The generation of ATP by the movement of hydrogen ions (H+) across a membrane is called...

a. Oxidative Phosphorylation
b. Cellular Respiration
c. Electron Transport Chain
d. Fermentation
e. Chemiosmosis

E

Oxidative Phosphorylation is the combination of what two processes?

a. Krebs Cycle & Electron Transport Chain
b. Electron Transport Chain & Chemiosmosis
c. Electron Transport Chain & Fermentation
d. Fermentation & Chemiosmosis
e. Glycolysis & Krebs Cycle

B

Which process (by methodology and by definition) requires oxygen?

a. Glycolysis
b. Krebs Cycle
c. Fermentation
d. Aerobic Respiration
e. Anaerobic Respiration

D

Fermentation is another name for...

a. Glycolysis
b. Krebs Cycle
c. Fermentation
d. Aerobic Respiration
e. Anaerobic Respiration

E

True or false - Aerobic respiration yields more ATP molecules per cycle than fermentation

a. True
b. False

A

Why does NADP+ combine with a H+ ion to form NADPH?

a. Carries H+ to the Calvin Cycle
b. Carries CO2 out of the cell
c. Carries O2 into the cell
d. Carries H+ out of the cell
e. Carries H+ into the cell

A

Why won't the light-independent reactions work in the dark after an extended period of no light?

a. The light-dependent reactions use the end products of the light-independent reactions
b. The light-independent reactions use the end products of the light-dependent reactions
c. The light-independent reactions occur in the middle of the light-dependent reactions
d. The light-dependent reactions occur in the middle of the light-independent reactions
e. Light-independent reactions will always work regardless of the availability of light

B

What is another name for the Calvin Cycle?

a. Light-dependent reactions
b. Light-independent reactions
c. Non-cyclic Phopsphorylation
d. Cyclic Phopsphorylation
e. Photophosphorylation

B

RuBisCo is an enzyme that...

a. Catalyzes the production of hexose sugar molecules
b. Catalyzes the production of ribulose bisphosphate
c. Catalyzes the production of ATP
d. Is used in the light-dependent to catalyze the bonding of CO2 to ribulose bisphosphate
e. Is used in the Calvin cycle to catalyze the bonding of CO2 to ribulose bisphosphate

E

Chloroplasts' internal structure) maximizes the surface area available for light absorption in order to...

a. Widen the cell size, producing turgor
b. Elongating the cell, producing long structural cells that make the plant stand upright
c. Produce the most amount of O2
d. Produce the most amount of sugar
e. Use the most amount of CO2

D

What is stroma?

a. Outer membrane of chloroplast
b. Inner membrane of chloroplast
c. Stacks of thylakoid membranes that contain chlorophyll
d. Liquid interior of the chloroplast
e. Sheet like membrane that connect stacks of thylakoids to each other

D

36. What is grana?

a. Outer membrane of chloroplast
b. Inner membrane of chloroplast
c. Stacks of thylakoid membranes that contain chlorophyll
d. Liquid interior of the chloroplast
e. Sheet like membrane that connect stacks of thylakoids to each other

C

38. What is a waste product of photosynthesis?

a. CO2
b. H2O
c. C6H1206
d. O2
e. Light Energy

D

39. What is a product of photosynthesis?

a. CO2
b. H2O
c. C6H1206
d. O2
e. Light Energy

C

Which of the following is not a reactant or a product of photosynthesis?

a. CO2
b. H2O
c. C6H1206
d. O2
e. Light Energy

E