Which free-living cells were the earliest contributors to the formation of Earthʹs oxidizing atmosphere?

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#Question id: 15117

#Unit 8. Inheritance Biology

In any population of 10000, in which 100 females were affected from x-linked recessive disorder. What will be the carrier frequency for this x-linked recessive disorder.

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#Question id: 29428

#Unit 6. System Physiology – Plant

Thioredoxins occur in multiple forms and have conserved structures to interact with target enzymes , different types of thioredoxin in cells and their location is given

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#Question id: 12325

#Unit 10. Ecological Principles

According to bottom-up and top-down control models of community organization, which of the following expressions would  imply  that  an  increase  in  the  size  of  a  carnivore  (C)population  would  negatively  impact  on  its  prey  (P) population, but not vice versa? 

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#Question id: 23101

#Unit 2. Cellular Organization

Choose the incorrect statement 

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#Question id: 4426

#Unit 3. Fundamental Processes

In one taxonomic classification, Archaea, Eukarya, and Bacteria represent the three major domains of life. Eukarya utilize the general transcription factors TBP (TATA-binding protein) and TFIIB in transcription, whereas Bacteria do not. At least one member of Archaea has a protein similar to TBP and a protein similar to TFIIB. Based on this observation, which of the following scenarios is most likely?