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TLS Online TPP Program

#Question id: 53

Calculate the number of times the DNA of a modern E. coli cell has been copied accurately since its earliest bacterial precursor cell arose about 3.5 billion years ago. Assume for simplicity that over this time period, E. coli has undergone, on average, one cell division every 12 hours (this is an overestimate for modern bacteria, but probably an underestimate for ancient bacteria).

#SCPH01 Biochemistry

  1. 4.6 × 10^12 generations

  2. 3.4 × 10^13 generations

  3. 2.6 × 10^12 generations

  4. 2.6 × 10^11 generations

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TLS Online TPP Program

#Question id: 3912

#SCPH28 | Zoology

Which of the following are incorrect matches for the given genes?
TLS Online TPP Program

#Question id: 10996

#SCPH06 I Botany

A ventricular depolarization wave when traveling 60° in the frontal plane will cause a large positive deflection in which of the following leads?
TLS Online TPP Program

#Question id: 375

#SCPH05 I Biotechnology

The aqueous solution with the lowest pH is:
TLS Online TPP Program

#Question id: 5706

#SCPH28 | Zoology

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?
TLS Online TPP Program

#Question id: 3011

#SCPH05 I Biotechnology

Bacteria that may form endospores include