#Question id: 2636
#I Life Science/ Life Sciences Group – I-V
Which of the following events occur when E. coli is starved for tryptophan?
I. The ribosome translates leader peptide completely
II. Transcription reads through attenuator into trp EDCBA
III. Tryptophanyl tRNA is not formed
IV. A stem loop structure involving regions 3 and 4 is formed at attenuator site
#Question id: 662
#I Life Science/ Life Sciences Group – I-V
________ received a Nobel Prize in 1964 for determining the structure of vitamin B12. He/she also solved the structure of penicillin in 1947 and developed many techniques used in the study of large proteins.
#Question id: 5706
#SCPH06 I Botany
Species A has 2n = 16 chromosomes and species B has 2n = 14. How many chromosomes would be found in an allotriploid of these two species?
#Question id: 1061
#SCPH28 | Zoology
Specialized transduction
#Question id: 4562
#SCPH05 I Biotechnology
Which stratum should contain the greatest proportion of extinct organisms?