How many half-lives should have elapsed if 6.25% of the parent isotope remains in a fossil at the time of analysis?

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#Question id: 2651

#XL - T Zoology

In the presence of lactose, how long does it take for the lac operon to be expressed?

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#Question id: 1591

#XL - S Microbiology

Which of the following is not true about helper T cells?

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#Question id: 503

#XL - S Microbiology

How many ATP molecules are consumed in glycolysis for every one molecule of glucose?

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#Question id: 12064

#XL - R Botany

Which taxon of eukaryotic organisms is thought to be directly ancestral to the plant kingdom?

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#Question id: 2093

#XL - S Microbiology

Which of the following is transmembrane proteins?