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TLS Online TPP Program

#Question id: 11970

Why do the cells of the digestive system secrete proteolytic enzymes, such as pepsin, in their inactive forms?

#SCPH28 | Zoology
  1. These proteolytic enzymes, in active form, would digest the very tissues that synthesize them.
  2. By secreting inactive enzymes, the catalytic activity of the enzymes is maintained for a longer time.
  3. The stomach is too acidic to maintain these enzymes in their active form.
  4. Inactive pepsin and trypsin are more easily transported across the cell membrane
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TLS Online TPP Program

#Question id: 12728

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

Name the type of RNA which folds up to give a cloverleaf secondary structure.
TLS Online TPP Program

#Question id: 4563

#SCPH28 | Zoology

If ʺxʺ indicates the location of fossils of two closely related species, then fossils of their most-recent common ancestor are most likely to occur in which stratum?
TLS Online TPP Program

#Question id: 2984

#SCPH06 I Botany

Certain unicellular eukaryotes, including diatoms and some yeasts, have mechanisms of nuclear division that may resemble intermediate steps in the evolution of mitosis. Which of the following is a characteristic feature of nuclear division in these organisms?
TLS Online TPP Program

#Question id: 4844

#SCPH12 I Genetics

Failure in which of the following phenomenon would result in linkage?
TLS Online TPP Program

#Question id: 2988

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

Use the figure to answer the question below. 

If the cell whose nuclear material is shown in the figure continues toward completion of mitosis, which of the following events would occur next?