Although absolute distinctions between the ʺmost evolvedʺ protobiont and the first living cell are unclear, biologists generally agree that one major difference is that the typical protobiont could not

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#Question id: 342

#XL - S Microbiology

In a single molecule of water, two hydrogen atoms are bonded to a single oxygen atom by ________.

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#Question id: 10273

#XL - Q Biochemistry

The existence of different pathways that serve a similar function and can replace each other without a clear loss in function is called,

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#Question id: 19568

#XL - P Chemistry

In graphite, the electrons are

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#Question id: 3940

#XL - Q Biochemistry

You have examined nucleoli structures from several sources listed below and find that the cell type with the largest nucleolus is the:

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#Question id: 369

#XL - Q Biochemistry

Calculate the pH of a 2.0 L solution containing 10 mL of 5 M acetic acid and 10 mL of 1 M sodium acetate. (pKa = 4.76)