In electron transport, which respiratory complex is not involved in the flow of electrons from FADH2?
A) complex I
B) complex II
C) complex III
D) complex IV
E) all of the above
A) complex I
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In a species of salamander, there are two forms, red and yellow. As the yellow form becomes less common due to predation and the red form more common, the yellow form becomes less likely to be eaten and more likely to survive and reproduce. The yellow form then becomes more common and roles of red and yellow forms reverse. This is an example of
A. negative frequency-dependent selection. B. directional selection. C. disruptive selection. D. balancing selection.
The pyloric sphincter, the circular muscle that controls the entrance of food from the stomach to the
small intestine, usually opens only slightly. What is the purpose of this?
What will be an ideal response?How many molecules of ATP are produced at each stage of aerobic respiration?
What will be an ideal response?
Which of these animals has the greatest proportion of long-looped nephrons in their kidneys?
A) A saltwater fish B) A freshwater fish C) A freshwater mammal, such as a beaver D) A human E) A desert mammal, such as a sand rat