Bio Reading Quiz 09

Which of the following is the most important result of the process of cellular respiration in biological systems?
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Which of the following is the most important result of the process of cellular respiration in biological systems?
transforming the energy in glucose and related molecules into a chemical form that cells can use for work
In the process of cellular respiration, what is consumed and what is produced?
glucose is consumed and carbon dioxide is produced
Which of the following statements describing the process of glycolysis is correct?
It represents the first stage in the chemical oxidation of glucose by a cell.
A glucose molecule is completely broken down to carbon dioxide and water in glycolysis and the citric acid cycle, but together these two processes yield only a few molecules of ATP. What happens to most of the energy that the cell obtains from the oxidation of glucose?
it is stored in NADH and FADH2
Which of the following statements about the citric acid cycle is correct?
The last reaction in the citric acid cycle produces a product that is a substrate for the first reaction of the citric acid cycle.
The electrons stripped from glucose in cellular respiration ultimately end up in which compound?
water
Which of the following statements about the chemiosmotic synthesis of ATP is correct?
The chemiosmotic synthesis of ATP requires that electron transport in the inner mitochondrial membrane be coupled to proton transport across the same membrane.
In the absence of oxygen, what is the net gain of ATP for each glucose molecule that enters glycolysis?
two ATP
In most cells, not all of the carbon compounds that participate in glycolysis and the citric acid cycle are converted to carbon dioxide by cellular respiration. What happens to the carbon in these compounds that does NOT end up as CO2?
they are removed from these processes to serve as building blocks for other complex molecules
Exposing inner mitochondrial membranes to ultrasonic vibrations will fragment the membranes and pieces will reseal to form small vesicles that contain the intermembrane space. These vesicles can transfer electrons from NADH to oxygen and synthesize ATP. Which of the following statements best describes what will happen to the vesicles when NADH is added?
The inside of the vesicles will become acidic.