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The partial pressures (in mm Hg) of oxygen and carbon dioxide at alveoli (the site of diffusion) are :

A
and

B
and

C
and

D
and

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In the alveolar air, the partial pressures of oxygen is 104 mmHg and that of carbon dioxide is 40 mmHg.
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Please help. Experiment #1: Enzyme Concentration (Catalase) Preparation Note: Place some potato extract, water, and hydrogen peroxide in the refrigerator. You will use this in Experiment #4, but it needs to cool for at least half an hour. (Identify Control Variables) Add 1-2 tablespoons of potato extract, tablespoons of water, and 2 tablespoons of frozen hydrogen peroxide. Stir gently. (It is critical that you stir, never shake, for a full minute every time you do this experiment.) Measure the bubbles. Repeat this step. (You will be arranging the two results.) (Hypothesis) Repeat the reaction with twice as much potato extract (tablespoons) and just water (1 tablespoon). Does this reaction work well? (Hypothesis) Repeat the reaction with three times as much potato extract (1-2 tablespoons) and no water. Do this reaction twice. Average the results for each concentration of enzyme. Conclusion: What is the effect of adding more enzyme to your reaction? Experiment #2: Enzyme Denaturation by pH (Catalase) Instead of repeating the reaction with 2 tablespoons of potato extract yet again, you will now average the results from the 1-2 tablespoons reaction in Experiment #2 for the next 5 experiments. For reference, ammonia is basic and lemon juice is acidic. (Hypothesis) Add 1-2 tablespoons of potato extract, tablespoons of ammonia, and 1-2 tablespoons of hydrogen peroxide. Stir for a minute and measure the bubbles. Repeat this step. (You will be arranging the two results.) (Hypothesis) Make the same trial as in the previous step, but use an acid (lemon juice or white vinegar). Do this experiment twice. Average the results for basic and acidic reactions. Conclusion: What is the effect of changing the pH on your reaction?
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Question Text
The partial pressures (in mm Hg) of oxygen and carbon dioxide at alveoli (the site of diffusion) are :
Updated OnMar 28, 2023
TopicBreathing and Exchange of Gases
SubjectBiology
ClassClass 11
Answer TypeText solution:1 Video solution: 4
Upvotes337
Avg. Video Duration3 min