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AP Biology Unit 3 BioClub Review Flashcards | StudBud
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AP Biology Unit 3 BioClub Review
AP Biology Unit 3 BioClub Review
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Answers
1
Which statement correctly describes ATP synthase?
It is a molecular motor with 4 rotors
It usually works like an ion pump
It is found on the cell membranes of eukaryotic cells
It contains channels as well as catalytic sites
2
How can cells reach a state of metabolic equilibrium?
Cells cannot reach eqilibrium
Grow in an environment that is in equilibrium
Downward dog
Die
3
Why must fermentation occur?
Fermentation forms ATP in aerobic conditions
It provides extra ATP along with the citric acid cycle
NAD+ needs to be regenerated
Easy to drink. Easy to enjoy
4
What is chemiosmosis?
A gradient formed by charged ions
A cancer treatment
Chemical osmosis
An energy coupling mechanism that uses a proton gradient to perform work
5
Which of the following is typically not a use of ATP in a cell?
Causing shape changes in transport proteins
Forming phosphorylated intermediates
Transporting substances down their concentration gradients
Assisting motor protein movement
6
How many G3P are made in the reduction phase of the Calvin cycle?
6
3
5
1
7
Which FRQ task verb requires you to determine the significance of information, or the quality or accuracy of a claim?
Evaluate
Justify
Describe
Explain
8
Why does enzyme activity decrease as temperature decreases?
ATP does not function
The enzyme denatures
bing-chilling
There are less collisions
9
Why do plants prefer certain wavelengths of light?
Different wavelengths of light activate different enzymes
Certain wavelengths of light damage the plant
Plants contain different pigments that absorb best at certain wavelengths
Different wavelengths of light have higher energy
10
What is true of the reaction modeled by the reaction diagram?
The reaction is expected to be spontaneous
It may be a processes in photosynthesis
The reaction is catalyzed by the glycolysis enzyme phosphfructokinase
ΔG of the reaction is negative
11
What does ATP lose in order to provide energy?
Phosphorus
H2O Molecule
Ribose
Inorganic Phosphate
12
When is CO
2
first released during cellular respiration?
Oxidation of Pyruvate
Glycolysis
Electron Transport Chain
Citric Acid Cycle
13
BONUS POINTS!!!! What is the best drink?
Monsta Energy
Coffee
Pepsi
Milk
14
Which FRQ task verb requires you to provide relevant characteristics of a specified topic?
Determine
Describe
State
Predict
15
Which of the following is an incorrect statement comparing lactic acid fermentation and alcohol fermentation?
Alcohol fermentation is used by yeast, lactic acid fermentation is not
Alcohol fermentation makes ethanol, lactic acid fermentation makes lactate
Alcohol fermentation creates CO2, lactic acid fermentation does not
There are no differences between the two other than products
16
Which statement correctly compares light reactions and the Calvin cycle?
Light reactions make NADPH, Calvin cycle makes ATP
Light reaction makes sugar, Calvin cycle makes NADPH
Light reactions make NADPH, Calvin cycle makes sugar
Light reaction makes ATP, Calvin cycle makes NADPH
17
Why does FADH
2
provide less ATP than NADH?
Complex II (where it deposits electrons at) does not pump protons
It donates less electrons to the ETC
Skill issue
It has a higher affinity for electrons than NADH
18
Why did C4 plants evolve?
To optimize the Calvin cycle
To adapt to rising CO2 levels
To origin a species
To minimize photophosphorylation
19
What enzyme incorporates CO
2
into the Calvin cycle?
Aldolase
PEP Carboxylase
RuBP
Rubisco
20
Which of the following is not a form of allosteric regulation?
Competitive inhibition
Allosteric Inhibition
Cooperativity
Feedback inhibition
21
How many ATP must be used in the energy investment phase of glycolysis?
\int_0^2\left(x^3-x\right)dx ATPs
1 ATP
32 ATPs
3 ATPs
22
What are the parts of a photosystem?
Cytochrome complex and chlorophyll molecules
A reaction center complex and the ETC
Light harvesting complex, reaction center complex
Ferredoxin and primary electron acceptors
23
Why do CO
2
levels increase in lakes at night?
Nights are colder, which traps more CO2 in the water
CO2 levels do not increase
Humans dump their waste in lakes at night
Photosynthetic organisms do cellular respiration without photosynthesis
24
Which FRQ task verb requires you to provide information about a specified topic without elaboration?
Identify
Make a claim
Explain
Determine
25
What does the induced fit hypothesis state?
Unbound active sites are structurally suboptimal for substrate binding
Biology often induces a fit in high schoolers
Enzyme active sites are always perfectly aligned with substrate structure
Enzymes induce substrates to change shape in order to catalyze the reaction
26
Why are accounts of ATP production by cellular respiration usually overestimates?
FADH2 contributes less to the proton gradient
Biologists don't like math
The proton-motive force typically drives other types of work
They do not account for inefficiencies in chemical reactions
27
Yeasts can use both fermentation and respiration to make ATP. What are they?
Prokaryotes
Facultative anaerobes
Obligate anaerobes
Aerobes
28
How many proton(s) and electron(s) does NAD+ receive to become NADH?
1 electron, 0 protons
0 electrons, 0 protons
0 electrons, 1 proton
2 electrons, 1 proton
29
Phosphofructokinase is an enzyme functioning in the glycolysis pathway. Where would you expect to find it in a cell?
Chloroplast
Mitochondria
Nucleus
Cytosol
30
What conditions will lead to stomata closure in a C3 plant?
Cool, raining daytime
stomata never close
Hot, dry daytime
Humid, hot daytime
