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

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#Question id: 12054

#Unit 7. System Physiology – Animal

A 54-year-old woman eats a healthy meal. Approximately 20 min later the woman feels the urge to defecate. Which of the following reflexes results in the urge to defecate when the stomach is stretched?

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#Question id: 23696

#Unit 13. Methods in Biology

which of the following best describes the complete sequence of steps occurring during every cycle of PCR?

1. The primers hybridize to the target DNA.

2. The mixture is heated to a high temperature to denature the double stranded target DNA.

3. Fresh DNA polymerase is added.

4. DNA polymerase extends the primers to make a copy of the target DNA.

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#Question id: 5840

#Unit 8. Inheritance Biology

The sequence of proteins used in bacterial recombination is

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#Question id: 3645

#Unit 3. Fundamental Processes

The single-stranded bubble created in DNA replication is coated with _____________ to protect it from breakage and to prevent the DNA renaturing.

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#Question id: 19470

#Unit 12. Applied Biology

From where did this GOX gene has been isolated from and expressed in transgenic plants?