Some present-day bacteria use a system of anaerobic respiration characterized by an electron transport chain analogous to that found in aerobic organisms. Which of the following correctly characterizes the anaerobic electron transport chain?
A. It uses oxygen as a final electron acceptor.
B. It is embedded in the outer mitochondrial
membrane rather than the inner mitochondrial
membrane.
C. It establishes a proton gradient between
the cytoplasm and the extracellular fluid.
D. It establishes a proton gradient between
the intermembrane space and the cytoplasm.
E. None of these answer options accurately
characterizes the anaerobic electron
transport chain.
C
You might also like to view...
Some sensory receptors are the result of adaptations of the axons of sensory neurons.
a. true b. false
The smooth ER is the primary site for the synthesis of phospholipids and cholesterol needed to make ____
a. DNA b. ATP c. ribosomes d. hormones e. cell membranes
Which of the following statements about collagen is false?
a. It is the most abundant protein in animal tissues. b. It forms a double helix, with two collagen molecules wrapped around each other in a ropelike structure. c. It contains an amino acid called hydroxyproline. d. It is a secreted protein.
Describe the spatial patterns of light and nutrients in a lake, and explain why these patterns exist
What will be an ideal response?