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WorksheetsGut check
Total questions: 15
Worksheet time: 8mins
Figure 1 depicts a chemical reaction catalyzed by the presence of an enzyme. Which of the letters represents the enzyme?
A
B
C
D
E
Which of the items depicted in Figure 1, MUST be a protein?
A
B
C
D
E
Which of the statements below best describe this reaction?
Reactants C and D are combined into product B in this reaction.
Reactants C and D are combined into product A in this reaction.
Reactants A and B are combined to make products C and D in this reaction.
Reactant A is decomposed to form products C and D in this reaction
Which of the following DOES NOT accurately describe an enzyme’s active site?
In the reaction above, the active site is represented by letter ‘E’
The active site is highly variable in shape to accommodate many different enzymes
The active site is location where the enzyme and substrate molecule interact
The shape of the active site is susceptible to changes in temperature and/or pH
Which of the enzymes above is most active in an acidic environment?
Chymotrypsin
Cholinesterase
Pepsin
Papain
Of the four enzymes depicted in Figure 2, which one is least effected by a change in pH?
Chymotrypsin
Cholinesterase
Pepsin
Papain
Which enzyme(s) above have an optimal reactivity at a neutral pH? YOU MAY SELECT MORE THAN ONE ANSWER
Chymotrypsin
Cholinesterase
Pepsin
Papain
Which of the following statements best describes the cycling of matter in the diagram?
Sunlight -> Glucose -> ATP -> sunlight, etc.
Glucose + oxygen -> carbon dioxide + water -> glucose + oxygen , etc.
Sunlight + carbon dioxide -> ATP + oxygen -> sunlight + carbon dioxide, etc.
Oxygen + water -> carbon dioxide + glucose -> oxygen + water, etc
Which of the following DOES NOT represent a form of energy in the diagram above?
Radiant energy of the sun
Chemical energy of water
Chemical energy of glucose
Chemical energy of ATP
Heat energy
The O2 released during photosynthesis comes from ____________
CO2
H2O
RUBP
NADPH
The energy required to run the Calvin cycle reactions of photosynthesis comes from which two substances produced during the light-dependent reactions?
ATP and NADPH
ADP and PO4
H+ and PO2
O2 and CO2
A researcher claims that increased atmospheric carbon dioxide levels cause increased growth rates in plants.
Atmospheric carbon dioxide is a byproduct of cellular respiration, which is a metabolic process that occurs in plants and other living organisms.
Atmospheric carbon dioxide is produced by the burning of fossil fuels, which are formed from the remains of living organisms such as plants.
Atmospheric carbon dioxide typically enters plant leaves through stomata, which plants rely on for regulating gas exchange with the atmosphere.
Atmospheric carbon dioxide is the raw material for photosynthesis, which plants rely on for producing sugars and other organic compounds
Please look at the picture being displayed. Photosynthesis is solar powered chemical reaction that involves numerous enzymes and ultimately produces the stored energy molecules called carbohydrates. What can be inferred from the following data table about the conditions that are favorable for the process of photosynthesis and carbohydrate production?
The rate of photosynthesis is directly related to the temperature of the environment and the amount of Carbon Dioxide that is available to the photosynthetic organism, but the amount of light is unrelated to the rate
The rate of photosynthesis is inversely related to the amount of light present, the temperature of the environment, and the amount of Carbon Dioxide that is available to the photosynthetic organism.
The rate of photosynthesis is directly related to the to the amount of light present and the amount of carbon Dioxide that available, but the temperature of the environment is unrelated to the rate.
The rate of photosynthesis is directly related to the amount of light present, the temperature of the environment, and the amount of Carbon Dioxide that is available to the photosynthetic organism
Thylakoid membranes within chloroplasts contain chlorophyll, which is used during the light-dependent reactions of photosynthesis. The light-independent reactions, also known as the Calvin cycle, of photosynthesis occur in the watery stroma of the chloroplasts. Which of the following statements BEST describes how these 2 processes are related
The light-dependent reactions use ADP and NADP+ molecules formed during the light-independent reactions to convert CO2 into sugar molecules
The light-dependent reactions use sugar molecules formed during the light-independent reactions to generate ATP and NADPH molecules.
The light-independent reactions use ATP and NADPH molecules formed during the light-dependent reactions to convert CO2 into sugar molecules
The light-independent reactions use sugar molecules formed during the light-dependent reactions to generate ATP and NADPH molecules
Carbohydrate-synthesizing reactions of photosynthesis directly require:
Light
Products of the light reactions
Darkness
O2 and H2O
Chlorophyll and H2O
