The peptide bond is formed by

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#Question id: 7763

#SCPH06 I Botany

Two major sources of mutation are radiation and reactive oxygen species (ROS).The reactive oxygen species hypothesis for aging postulates that 

1) Senescence results from the accumulation of DNA, lipid, and protein damage inflicted by ROS of mitochondrial origin; and

2) Mitochondria of long-lived species should produce high ROS than do mitochondria of short-lived species.

3) the capacity of mitochondria to consume ROS might distinguish long-lived species from short-lived species, rather than differences in ROS generation. 

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#Question id: 1268

#SCPH05 I Biotechnology

The collagen triple-helix domain

a. is rich in glycine.                             b. is rich in proline.

c. is rich in hydroxyproline.                d. is an alpha helix.

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#Question id: 5547

#I Life Science/ Life Sciences Group – I-V

 Cells that rove from somites form the

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#Question id: 4583

#SCPH06 I Botany

Prior to the work of Lyell and Darwin, the prevailing belief was that Earth is ________.

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#Question id: 3886

#SCPH06 I Botany

Which one of the following statements about the reverse transcriptases of retroviruses and the RNA replicases of other single-stranded RNA viruses, such as R17 and influenza virus, is correct?