Which of the following must exist in a population before natural selection can act upon that population?

TLS Online TPP Program

#Question id: 23149

#13. Methods in Biology

In fluorescence microscopy a usually used fluorochrome that is fura-2 is sensitive to which ions?

TLS Online TPP Program

#Question id: 1080

#4. Cell Communication and Cell Signaling

 In the formation of biofilms, such as those forming on unbrushed teeth, cell signaling serves which function?

TLS Online TPP Program

#Question id: 836

#1. Molecules and their Interaction Relevant to Biology

To predict the structure of any protein the most simplest and reliable approach is,

TLS Online TPP Program

#Question id: 561

#1. Molecules and their Interaction Relevant to Biology

Enzyme X exhibits maximum activity at pH = 6.9.  X shows a fairly sharp decrease in its activity when the pH goes much lower than 6.4.  One likely interpretation of this pH activity is that:

TLS Online TPP Program

#Question id: 19330

#12. Applied Biology

Which one of the following can be used to measure the environmental and water quality?