Fossilization begins ____

a. when an organism’s remains are found underwater
b. when decay begins
c. after an organism is buried in sediments
d. immediately after stratification ends
e. after speciation


ANSWER: c

Biology & Microbiology

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Ganglia, which still occur in some extant taxa, were the evolutionary precursor to the centralized concentration of neurons that we now call a brain

A. true B. false

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In the anammox process ________.

A. nitrogen gas is evolved B. all reactions must take place in the absence of O2 C. anaerobic oxidation of ammonia is coupled to the reduction of nitrite D. All of the choices are correct.

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What was the significance of Griffith's and Avery's "transformed" cells?

What will be an ideal response?

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Energy released by the electron transport chain is used to pump H+ into which location in eukaryotic cells?

A) mitochondrial outer membrane B) mitochondrial inner membrane C) mitochondrial intermembrane space D) mitochondrial matrix

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