Assessment Items from the Cell Biology 3 Small Group

Learning Objectives

Students shall understand the relationship between chemiosmosis and ATP synthesis.

Students shall understand energy transformation during cellular respiration

Student shall understand the role of gradients in cellular respiration

Students shall understand the role of oxygen in metabolism

Misconceptions to target:
Oxygen is converted directly to CO2.
Electron transport directly makes ATP.

Concept:
Energy is conserved and wasted energy is lost as heat.


The first question is our summative exam question to be asked after coverage of metabolism, including ATP synthesis, electron transport chain / oxidative phosphorylation.
The next set of questions could be used in class to reinforce the concepts and would make use of the e- transport diagram.


Summative 1. HOC - Application and analysis

Graves disease is associated with a hyperactive thyroid gland and high levels of thyroid hormone. A symptom is weight loss and weakening of the proton gradient across the inner mitochondrial membrane.
Given that the amount of food consumed is unchanaged, how happens to food energy lost in patients with graves disease?
a. it is converted into chemical bonds.
b. It is stored as ATP
c. It is stored in NADH
d. It is exhaled as CO2
e. It is lost as heat.


In the presence of uncouplers (molecules that make the mitochondrial membrane permeable to protons), what would happen to the rate of flow of electrons through the electron transport chain?
a. it would run faster
b. it would run slower
c. it would not change

In the presence of uncouplers
what would happen to the rate of CO2 production?
a. it would increase
b. it would decrease
c. it would not change

In the presence of uncouplers
what would happen to the rate of oxygen consumption
a. it would increase
b. it would decrease
c. it would not change


What happens to the oxygen you inhale?
a. you exhale it as carbon dioxide
b. you excrete it as water in your urine.


Summative 2 HOC - Analysis / Application
Which of the following would slow the rate of flow of electrons through the electron transport chain?
T/F the accumulation of ATP
T/F the depletion of oxygen
T/F the accumulation of NADH


Free response: If any of these are false, explain why.

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