I1 rue . Question 45 0 out of 6 points · Fill in the blanks with numerals (not w
ID: 199065 • Letter: I
Question
I1 rue . Question 45 0 out of 6 points · Fill in the blanks with numerals (not words). The pesticide Rotenone blocks respiratory complex I of the electron transport chain, but does not effect any of the other complexes. How many protons would get pumped into the inner membrane space from one molecule of gl disabled [al? How many ATPs would be produced from one glucose for the entire respiration process in this scenario 2 [bl (use 3.3 protons per ATP and round to the nearest whole number) Answer 66-80 Specified Answer for: aExplanation / Answer
a) Complex I pumps 4 H+ ions across the membrane.
Complex III pumps 4 H+ ions across the membrane.
Complex IV pumps 4 H+ ions across the membrane.
Complex II is NOT involved in proton pumping across the mitochondrial membrane.
Thus a total of 12 H+ are pumped across the membrane.
Now if Complex I is disabled a loss of 4H+ will occur to the proton transport system. Hence 8 H+ will be pumped.
b) According to the information provided,
3.3 H+ produce 1 ATP
In normal condition 12 H+ will produce 12/3.3 ~ 4 ATPs
When Complex I is blocked, 8 H+ will produce 8/3.3 ATP's = 2.42 ~ 2 ATPs.
Thus a loss of 2 ATP's occurs in the given situation.
Now 38 ATP's are produced in a cell undergoing aerobic cellular respiration.
Breakdown of this 38 ATP's is as follows :
As there is a loss of 2 ATPs in the given situation, ETC will produce 32 ATPs. Hence total ATPs generated will be 36 ATPs.