Practice Questions

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?

#7. System Physiology – Animal

These proteolytic enzymes, in active form, would digest the very tissues that synthesize them.
By secreting inactive enzymes, the catalytic activity of the enzymes is maintained for a longer time.
The stomach is too acidic to maintain these enzymes in their active form.
Inactive pepsin and trypsin are more easily transported across the cell membrane

More Questions

#Question id: 6984

#5. Developmental Biology

Which of the following genes is unlikely to be involved in preaxial polydactyly in mice?

#Question id: 23307

#Aptitude

#Question id: 10273

#6. System Physiology – Plant

The existence of different pathways that serve a similar function and can replace each other without a clear loss in function is called,

#Question id: 11914

#10. Ecological Principles

Alder trees, which harbour nitrogen-fixing bacteria in their roots, provide nitrogen to soils developing on sandbars rivers, this is an example of,

#Question id: 5017

#11. Evolution and Behavior

Arrange these events from earliest to most recent.

1. emission of lava in what is now Siberia at time of Permian extinctions

2. emission of lava that solidified at the same time as iron-bearing terrestrial rocks began to rust

3. emission of lava that solidified at the same time as rusted iron precipitated from seawater

4. emission of lava in what is now India at time of Cretaceous extinctions