NEW
Font size
WorksheetsCellular Respiration Level 1 and 2
Total questions: 12
Worksheet time: 16mins
As a scientist employed by the FDA, you've been asked to sit on a panel to evaluate a pharmaceutical company's application for approval of a new weight loss drug. The company has submitted a report summarizing the results of their animal and human testing. In the report, it was noted that the drug works by affecting the electron transport chain. It decreases the synthesis of ATP by making the mitochondrial membrane permeable to H+, which allows H+ to leak from the intermembrane space to the mitochondrial matrix. This effect leads to weight loss.
The drug prevents ATP from being made by . . .
eliminating the H+ gradient that allows ATP synthase to work.
preventing the conversion of NADH to NAD+.
slowing down the citric acid cycle.
preventing glycolysis from occurring.
Some friends are trying to make wine in their basement. They've added yeast to a sweet grape juice mixture and have allowed the yeast to grow. After several days they find that sugar levels in the grape juice have dropped but there's no alcohol in the mixture. The most likely explanation is that
yeast used the alcohol as a carbon source
mixture needs less oxygen because yeast only produce alcohol in the absence of oxygen
mixture needed more sugar because yeast need a lot of energy before they can begin to produce alcohol
mixture needs more oxygen because yeast needs oxygen to break down sugar and get enough energy to produce alcohol.
A child is born with a rare disease in which mitochondria are missing from skeletal muscle cells. However, the muscles still function. Physicians find that the
muscle cells cannot split glucose to pyruvate
muscle contain large amounts of lactic acid following even mild physical exercise
muscle contains large amounts of carbon dioxide following even mild exercise
muscles require extremely high levels of oxygen to function
Which of the following molecules can be used as a substrate for cellular respiration?
carbohydrates
fats
proteins
all of the above
Energy released by the electron transport chain is used to pump H+ ions into which location?
Cytosol
Mitochondrial Outer Membrane
Mitochondrial Inner Membrane
Mitochondrial Intermembrane Space
Muscle cells in oxygen deprivation convert pyruvate to ________, and in this step gain ________.
lactate; ATP
alcohol; CO2
alcohol; ATP
lactate; NAD+
The passing of electrons in the electron transport chain directly allows for
creation of a proton gradient through proton pumping
powering of ATP synthase
creation of water
A decrease in the amount of oxygen available will....
not have an effect on the amount of energy produced during cellular respiration
decrease the amount of glucose produced during cellular respiration
cause the amount of water produced during cellular respiration to increase
decrease the amount of energy produced during cellular respiration
