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TLS Online TPP Program

#Question id: 1121

Which of the following provides the best evidence that cell-signaling pathways evolved early in the history of life?

#SCPH28 | Zoology

  1. Cell-signaling pathways are seen in "primitive" cells such as bacteria and yeast.

  2. Bacteria and yeast cells signal each other in a process called quorum sensing.

  3. Signal transduction molecules identified in distantly related organisms are similar.

  4. Most signals in all types of cells are received by cell surface receptors.

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TLS Online TPP Program

#Question id: 550

#SCPH28 | Zoology

Which of the following statements is false?
TLS Online TPP Program

#Question id: 19136

#SCPH01 Biochemistry

Which of the following statement is correct about dot matrix?
TLS Online TPP Program

#Question id: 14692

#SCPH06 I Botany

A box contains 6 white balls and 3 black balls and another box contains 4 white balls and 5 black balls. The probability that a ball selected from one of the box again selected at random is a white ball.
TLS Online TPP Program

#Question id: 362

#SCPH01 Biochemistry

A 0.01 M solution of a substance has a pH of 2. What can you conclude about this substance?
TLS Online TPP Program

#Question id: 1113

#SCPH01 Biochemistry

Consider this pathway:

epinephrine → G protein-coupled receptor → G protein → adenylyl cyclase → cAMP

The second messenger in this pathway is: