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Describe the relationship between substrate concentration and the initial reaction rate of an enzyme-catalyzed reaction. Is this relationship linear?
reaction goes faster initially; relationship is linear
Explain why the maximum initial reaction rate cannot be reached at low substrate concentrations.
there is not enough substrate
Enzymes function most efficiently at the temperature of a typical cell, which is 37 degrees Celsius (98.6 degrees Fahrenheit). Increases or decreases in temperature can significantly slower the reaction rate. What does this suggest about the importance of temperature-regulating mechanisms in organisms? Explain.
Enzymes change shape at higher temperatures and then reaction cannot happen
How can large particles of food or large amounts of liquid get into the cell without going through the transport proteins or between the phosopholipid bilayers?
put food in cell membrane, engulf food with membrane, make vesicle with membrane
Cells don't have digestive system organs. Which cell organelle/structure MIGHT function as a STOMACH?
What is the GENERAL PROCESS called that the cell uses to take in HUGE food particles and large amounts of liquids? What is the specific process for food and the one for liquids?
endocytosis; phagocytosis and pinocytosis
What is the PROCESS called that the cell uses to get rid of HUGE amounts of waste or to SECRETE large amounts of stuff to the outside of the cell?
does not block active site, to other site, changes enzymes shape, substrate cannot get in
if temperature of the reaction was lower the reaction would slow down. Why?
molecules would move slow
if temperature of the reaction was higher the reaction would speed up. Why?
molecules would move fast
2 ways to change the shape of an enzyme using other chemicals to INHIBIT reaction:
competitive and noncompetitive inhibition
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