Two nutrient solutions are maintained at the same ph. actively respiring mitochondria are isolated and placed into each of the two solutions. oxygen gas is bubbled into one solution. the other solution is depleted of available oxygen. which of the following best explains why atp production is greater in the tube with oxygen than in the tube without oxygen?

a. the rate of proton pumping across the inner mitochondrial membrane is lower in the sample without oxygen. b. electron transport is reduced in the absence of a plasma membrane. c. in the absence of oxygen, oxidative phosphorylation produces more atp than does fermentation. d. in the presence of oxygen, glycolysis produces more atp than in the absence of oxygen.

was told the answer is a. but i need justifying that and why it is not d

Explanation:

A is correct because energy from electrons from oxygen are used to pump the H+ (as well as electrons from NADH) It's not D because glycolysis happens both in absence and presence of oxygen and never uses O2 so glycolysis is the same in both processes, its what happens after glycolysis that is dependent on the availability of oxygen (oxidative phosphorylation or fermentation)

answer: andy garner, a 17-year-old who decided to become a human guinea pig in 1965 and go without sleep for 11 days. by the second day his eyes had already stopped focusing, and he lost the ability to identify objects by touch. by day three he was moody and uncoordinated and by the end he had trouble with short term memory and had even started hallucinating.

and a rare genetic mutation called fatal familial insomnia, where people can’t sleep at all, gets progressively worse over months or years and leads to dementia and death.

a devoted soccer fan died after staying awake 48 hours to watch the world cup, she said. ‘while his untimely death was due to a stroke, studies show chronically sleeping fewer than six hours a night increases stroke risk by 4 1/2 times compared with those getting a consistent seven to eight hours.'

*shorten it up as your wish*

(i have divided it into 3 simple paragraphs)