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TLS Online TPP Program

#Question id: 11962

 In the digestive system, peristalsis is ________.

#SCPH28 | Zoology
  1. a process of fat emulsification in the small intestine
  2. voluntary control of the rectal sphincters regulating defecation
  3. the transport of nutrients to the liver through the hepatic portal vessel
  4. smooth muscle contractions that move food along the oesophagus
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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: 10777

#SCPH05 I Biotechnology

Why pyrethroids are synthetically and commercially viable and applicable ?
TLS Online TPP Program

#Question id: 53

#SCPH05 I Biotechnology

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).
TLS Online TPP Program

#Question id: 19307

#SCPH06 I Botany

Use of constitutive promoters to produce transgenic plants offers certain advantages.
(1) They can be used to drive reporter genes
(2) They are essential in proteins that are required in all tissues
(3) They are useful in driving transcription factors that are involved in transcription regulation
Mark the option with all correct statements?
TLS Online TPP Program

#Question id: 14291

#SCPH05 I Biotechnology

In a batch sterilization process if  overall,  heating &  cooling are 32.2, 9.8 & 10.1 respectively, THEN the holding time at 121^o-C of the process is (given that the specific death rate (k) of microorganisms at 121^o-C is 2.54 min-1 ):