Which of the following radioisotopes could be used to accurately date a fossil that is thought to be over 750 million years old?

A. uranium 238
B. carbon 14
C. uranium 235
D. uranium 235 or uranium 238
E. carbon 14 or uranium 235


A

Biology & Microbiology

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Fill in the blank(s) with correct word

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Acetyl is used during 

A. the Krebs cycle. B. the electron transport system. C. glycolysis. D. fermentation.

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Based on the animation, what is transferred during bacterial conjugation?

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Although autoantibodies to nucleic acids are characteristics of (HIV/RA/SLE), many other autoantibodies are produced

What will be an ideal response?

Biology & Microbiology