The 5' methyl guanosine caps added during RNA chain elongation performs what function?

1. prevents degradation by nucleases 

2. are recognized by protein factors

3. are used to identify the type of RNA

TLS Online TPP Program

#Question id: 8697

#Unit 9. Diversity of Life Forms

Use the figure to answer the following question.

Which extinct species should be the best candidate to serve as the outgroup for the clade whose common ancestor occurs at position 2 in the figure?

TLS Online TPP Program

#Question id: 369

#Unit 1. Molecules and their Interaction Relevant to Biology

Calculate the pH of a 2.0 L solution containing 10 mL of 5 M acetic acid and 10 mL of 1 M sodium acetate. (pKa = 4.76)

TLS Online TPP Program

#Question id: 28449

#Unit 5. Developmental Biology

In C. elegans during embryogenesis, an anchor cell and 6 hypodermal vulval precursor cells (VPCs) get involved in forming the vulva. Which of the following statement is incorrect about  VPCs?

TLS Online TPP Program

#Question id: 1649

#Unit 4. Cell Communication and Cell Signaling

Which of the following gene clusters do NOT contribute to antigen binding?

TLS Online TPP Program

#Question id: 27671

#Unit 1. Molecules and their Interaction Relevant to Biology

The range for Pro residues cyclic side chain has