Which gas was least abundant in Earthʹs early atmosphere, prior to 2 billion years ago?

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#Question id: 4304

#3. Fundamental Processes

Using codon table, identify a 5′ → 3′ sequence of nucleotides in the DNA template strand for an mRNA coding for the polypeptide sequence Phe-Pro-Lys.

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#Question id: 3025

#2. Cellular Organization

Penicillin is an antibiotic that inhibits enzymes from catalyzing the synthesis of peptidoglycan, so which prokaryotes should be most vulnerable to inhibition by penicillin?

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#Question id: 829

#1. Molecules and their Interaction Relevant to Biology

Which one is the incorrect conclusion of Anfinsen’s eperiments?

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#Question id: 9211

#9. Diversity of Life Forms

Of the following ecosystem types, which have been impacted the most by humans?

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#Question id: 11997

#10. Ecological Principles

Which statement best contrasts environmentalism with ecology?