The area surrounding cells outside the plasma membrane is referred to as the ________ environment
Fill in the blank(s) with correct word
extracellular
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The constituents of the electron transport chain have similar capabilities, with the exception of ubiquinone (coenzyme Q). What is different about ubiquinone?
A) Ubiquinone is a protein that begins the electron transport chain, so it accepts the highest-energy electrons. B) Ubiquinone is a protein that serves as a regulator of the rate of redox reactions in the electron transport chain. C) Ubiquinone is a protein that is a constituent of all cells, prokaryotic or eukaryotic; hence its name, originating from "ubiquitous." D) Ubiquinone is not a protein, is lipid soluble, and can move through the inner mitochondrial membrane.
Which gas or gases bind to hemoglobin more strongly than oxygen?
a. carbon monoxide only b. carbon dioxide only c. nitrogen only d. both carbon dioxide and carbon monoxide e. both carbon dioxide and nitrogen
Which of the following species interactions is(are) considered symbiotic?
A. competition B. predator/prey C. parasite/host D. mutualism E. Both C and D are correct.
Consider the cladogram shown. If we designate species 1 as the outgroup, which species has the greatest number of ancestral character states (plesiomorphies)?
A. 2 B. 3 C. 4 D. 5 E. 6