...PLEASE HELP!? What is the name for the substance acted upon by an enzyme?
catalyst
substance
catalog
substrate
sublime
--------------------------------------…
What is the dependent variable in this lab?
height of gas
volume of gas
time
speed of reaction
--------------------------------------…
Increasing the amount (not concentration) of hydrogen peroxide in the reaction generally caused which of the following?
less oxygen gas was produced
more oxygen gas was produced
oxygen gas was produced faster
oxygen gas was produced more slowly
--------------------------------------…
Two flasks are set up like the apparatus in this lab and have different amounts of hydrogen peroxide in them but have the same amount of catalase. You observe the production of oxygen from the two flasks and note that flask A produces 100 ml of oxygen in half the time that flask B does. What can you learn from this observation?
Flask A and flask B had the same quantity of hydrogen peroxide
Flask A had more hydrogen peroxide than flask B
Flask B had more hydrogen peroxide than flask A
Nothing can be determined from this information
--------------------------------------…
In this experiment, oxygen gas bubbles up into a graduated tube. If 100 ml of oxygen takes 10 seconds to collect, what would you expect the total time to produce 200 ml of oxygen to be?
10 seconds
20 seconds
29 seconds
--------------------------------------…
Which of the following statements describes the rate of production of oxygen over time in this experiment?
Oxygen production rate increases over time
Oxygen production rate decreases over time
Oxygen is produced at the same rate always
--------------------------------------…
Reducing the amount of catalase in the reaction vessel produces which of the following results?
decreases the rate of oxygen production
increases the rate of oxygen production
decreases the total amount of oxygen produced
--------------------------------------…
Why is the initial slope of the volume-time curve used to estimate reaction rate?
The solution gets dirty, and the dirt affects the reaction rate.
It's easier to measure the first points than the last ones.
You have to measure the rate before the enzyme gets used up.
The slope declines as the amount of substrate decreases.
--------------------------------------…
How do enzymes affect the activation energy of chemical reactions?
They don't affect it.
They lower it.
They raise it.
Sometimes they lower it; sometimes they raise it.
--------------------------------------…
If you would like to maintain the same rate of oxygen generation over a long time, what should you do?
Add more enzyme.
Add more substrate over time.
Gradually increase the temperature.
Dump in lots of acid.
--------------------------------------…
Which of the following graphs best represents the rate of your enzyme reactions over time? The x-axis shows time; the y-axis is the rate in milliliters per second of oxygen produced.
I GOOGLED SOME OF THE ANSWERS, BUT THIS QUIZ IS BASED ON A LAB THAT I DONT UNDERSTAND THAT WELL. BIOLOGISTS HELP ME, AND ILL RETURN THE FAVOR. THANK YOU!
catalyst
substance
catalog
substrate
sublime
--------------------------------------…
What is the dependent variable in this lab?
height of gas
volume of gas
time
speed of reaction
--------------------------------------…
Increasing the amount (not concentration) of hydrogen peroxide in the reaction generally caused which of the following?
less oxygen gas was produced
more oxygen gas was produced
oxygen gas was produced faster
oxygen gas was produced more slowly
--------------------------------------…
Two flasks are set up like the apparatus in this lab and have different amounts of hydrogen peroxide in them but have the same amount of catalase. You observe the production of oxygen from the two flasks and note that flask A produces 100 ml of oxygen in half the time that flask B does. What can you learn from this observation?
Flask A and flask B had the same quantity of hydrogen peroxide
Flask A had more hydrogen peroxide than flask B
Flask B had more hydrogen peroxide than flask A
Nothing can be determined from this information
--------------------------------------…
In this experiment, oxygen gas bubbles up into a graduated tube. If 100 ml of oxygen takes 10 seconds to collect, what would you expect the total time to produce 200 ml of oxygen to be?
10 seconds
20 seconds
29 seconds
--------------------------------------…
Which of the following statements describes the rate of production of oxygen over time in this experiment?
Oxygen production rate increases over time
Oxygen production rate decreases over time
Oxygen is produced at the same rate always
--------------------------------------…
Reducing the amount of catalase in the reaction vessel produces which of the following results?
decreases the rate of oxygen production
increases the rate of oxygen production
decreases the total amount of oxygen produced
--------------------------------------…
Why is the initial slope of the volume-time curve used to estimate reaction rate?
The solution gets dirty, and the dirt affects the reaction rate.
It's easier to measure the first points than the last ones.
You have to measure the rate before the enzyme gets used up.
The slope declines as the amount of substrate decreases.
--------------------------------------…
How do enzymes affect the activation energy of chemical reactions?
They don't affect it.
They lower it.
They raise it.
Sometimes they lower it; sometimes they raise it.
--------------------------------------…
If you would like to maintain the same rate of oxygen generation over a long time, what should you do?
Add more enzyme.
Add more substrate over time.
Gradually increase the temperature.
Dump in lots of acid.
--------------------------------------…
Which of the following graphs best represents the rate of your enzyme reactions over time? The x-axis shows time; the y-axis is the rate in milliliters per second of oxygen produced.
I GOOGLED SOME OF THE ANSWERS, BUT THIS QUIZ IS BASED ON A LAB THAT I DONT UNDERSTAND THAT WELL. BIOLOGISTS HELP ME, AND ILL RETURN THE FAVOR. THANK YOU!