Practice Questions

TLS Online TPP Program

#Question id: 6962

In which way is the organizer region of the sea urchin similar to that in frogs?

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

The organizer induces the dorso-ventral axis.
The organizer forms near the dorsal lip of the blastopore.
The organizer accumulates -catenin, which in turn activates the expression of cell-cell signaling molecules.
The organizer will become the mesoderm.

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TLS Online TPP Program

#Question id: 16003

#SCPH05 I Biotechnology

When dissolved oxygen is lower than the critical concentration, viable cell concentration declines because of

TLS Online TPP Program

#Question id: 12582

#SCPH06 I Botany

Which of the following describes carbon dioxide, methane, and water vapor re-reflecting infrared radiation back toward Earth?

TLS Online TPP Program

#Question id: 13038

#SCPH05 I Biotechnology

Please arrange the following steps about ELIZA (Enzyme-linked immunosorbent assay) in chronological order

i. incubate with antibody-enzyme complex that binds primary antibody

ii. coat surface with antigen, block unoccupied sites with nonspecific protein

iii. add substrate, formation of colored product indicates presence of specific antigen

iv. incubate with primary antibody against specific antigen

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#Question id: 27883

#Research Methodology

What is the first step in the research process?

TLS Online TPP Program

#Question id: 3041

#SCPH28 | Zoology

Which statement about gram-negative bacteria is correct?