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WorksheetsExam 3
Total questions: 50
Worksheet time: 26mins
Prokaryotes have ribosomes
True
False
What is the type of absorption that takes in small particles and liquid?
Endocytosis
Exocytosis
Pinocytosis
Phagocytosis
An immune cell envelopes a bacteria to later digest it so it doesn't cause hard to the body. What kind of absorption is this?
Endocytosis
Exocytosis
Pinocytosis
Phagocytosis
What is the diagram showing?
Endocytosis
Exocytosis
Phagocytosis
Receptor mediated endocytosis
What part of the cytoskeleton is responsible for forming pseudopodia for phagocytosis?
Microfilaments
Microtubules
Intermediate filaments
Microfibers
In what organelle does the glycolysis step of cellular respiration take place?
Chloroplasts
Thylakoid membrane
Ribosomes
Mitochondria
Cytoplasm
Which reaction is breaking down polymers into monomers?
Anabolic
Catabolic
Which kind of reactions have a
−ΔG ? Select all correct answersCatabolic
Anabolic
Endergonic
Exergonic
When ATP becomes ADP, what is happening?
ATP gains a phosphate
ATP gains an electron
ATP loses a phosphate
ATP loses an election
What kind of reaction is shown in this graph? Select all that apply.
Endergonic
Exergonic
Anabolic
Catabolic
What kind of reaction is shown in this graph? Select all that apply.
Endergonic
Exergonic
Anabolic
Catabolic
In this graph, what does the first "hump" represent?
Free energy
Total energy
Activation energy
Kinetic energy
Nitrogen fixing bacteria use inorganic sources of carbon to create their own energy. These kinds of organisms are considered...
Autotrophs
Heterotrophs
Plants use inorganic sources of carbon to create their energy. They are...
Autotrophs
Heterotrophs
I (Flower) am currently taking care of a rabbit until I can find its forever home (seriously if anyone wants to adopt a rabbit, hit me up). The rabbit mostly eats plants like hay and lettuce, with the occasional treat of berries or apple. Rabbits are considered...
Autotrophs
Heterotrophs
What is the main way that enzymes speed up reactions?
Lowering total energy
Increasing Gibbs Free Energy
Increasing activation energy
Lowering activation energy
What is the suffix that generally indicates an enzyme?
-ous
-ase
-ate
-ors
When an enzyme slightly changes its shape to better fit its substrate, we call that...
Reduced fit
Induced fit
Optimal fit
Tailored fit
Cofactors are generally...
Organic compounds
Metallic ions
Hydrogen ions
Bacteria
What is the diagram of this enzyme pathway showing?
Competitive inhibition
Allosteric inhibition
End product inhibition
Allosteric activation
Enzymes have a kinetic curve. Why does the activity of the enzyme increase and then plateau as substrate is added?
All active sites are being used
All active sites are being inhibited
The enzymes are destroyed after use
How would this reaction be classified?
Catabolic
Anabolic
Competitive control is only inhibitory.
True
False
What is the product of glycolysis that will be used in the electron transport chain later?
NADH
NADPH
NADP
NAD+
What is the name of the type of phosphorylation that happens during glycolysis?
Substrate level phosphorylation
Oxidative phosphorylation
Reducing phosphorylation
Membrane bound phosphorylation
What is the theoretical yield of cell respiration for one glucose molecule in eukaryotes?
30
28
38
36
What is the purpose of NADH, FADH2, and NADPH?
Proton pumps
Proton carriers
Electron carriers
Electron conversion
Photon receptors
What compound must be regenerated during the Krebs cycle that combines with acetyl to create citrate?
FAD
Coenzyme A
Oxaloacetate
Ferredoxin
The process in which glucose is split into 2 pyruvates is called
Pyruvate oxidation
Glycolysis
Krebs cycle
Citric acid cycle
Electron Transport Chain
What is the oxidized form of the electron carrier only found in the Krebs cycle step of cellular respiration?
NAD+
NADH
FAD
FADH2
NADP
Glycolysis only produces 2 ATP total
True
False
If prokaryotes do not have organelles, where does the electron transport chain take place in bacteria?
In the cytoplasm of the cell
In the matrix of their ribosomes
In the mitochondria
In the cell's membrane
In eukaryotes, all of cell respiration except the ETC takes place in the cytoplasm
True
False
Where does the Krebs cycle take place?
Cytoplasm
Mitochondrial matrix
Mitochondrial membrane
Intermembrane space
How is ATP produced during the electron transport chain?
Through the bouncing of electrons off the photosystems
Through ATP hydrolysis
By using the energy of the proton gradient
By splitting glucose
The wavelengths of light absorbed by pigments in the granum are mainly in which range?
Green
Blue-violet and red-orange
All wavelengths are absorbed equally
None. The granum do not absorb light, only reflect.
During photosynthesis in chloroplasts, O2 is produced from _____ via a series of reactions associated with _____.
H2O ... NADPH-producing photosystem
H2O ... the water-splitting photosystem
CO2 ... both the NADPH-producing photosystem
CO2 ... Calvin cycle
What is the final electron acceptor in photosystem I?
ATP
Oxygen
Chlorophyll
NADP
Plants are the only organisms able to photosynthesize
True
False
Chloroplasts can make carbohydrates in the dark if provided with
ATP
NADPH
CO2
ATP, NADPH and CO2
Where do the light-independent reactions occur inside plant tissue?
inside photosynthetic cells but outside the chloroplast
inside the thylakoid disk
within the hydrophobic region of the thylakoid
in the stroma of the chloroplast
Which statement is true regarding the light-dependent reactions?
They rely on energy provided by glucose synthesis.
Overall, they are exergonic because ATP is produced.
Without water, the system would shut down.
ATP and NADPH are needed.
The electrons for the reaction center of photosystem II come from:
Photosystem I
H2O
NADPH
Glucose
What is produced by the oxidation of H2O in photosystem II's electron transport system?
NADPH
ATP
Glucose
O2
During the process of photosynthesis, solar energy is converted into:
Chemical energy
Potential energy
Nuclear energy
Thermal energy
What is the role of water in photosynthesis?
To maintain cell wall
To provide electrons
To convert NAD+ to NADH
To facilitate the movement of protons
To cool the cell as it is heated by the sun
The light reactions of photosynthesis supply the Calvin cycle (light independent reaction) with
ATP and NADPH
Light energy
Sugar and O2
H2O and NADPH
What is the step in the light independent reactions called where CO2 enters the reaction?
Carbon fixation
RuBP regeneration
3-PGA Reduction
What is being oxidized in photosynthesis?
Oxygen
Water
CO2
Hydrogen
Is photosynthesis overall a catabolic or anabolic reaction?
Catabolic
Anabolic
