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TLS Online TPP Program

#Question id: 1591

Which of the following is not true about helper T cells?

#Unit 4. Cell Communication and Cell Signaling

  1. They function in cell-mediated and humoral responses.

  2. They recognize polysaccharide fragments presented by class II MHC molecules.

  3. They bear surface CD4 molecules.

  4. They are subject to infection by HIV.

More Questions
TLS Online TPP Program

#Question id: 2523

#Unit 2. Cellular Organization

Which of the following in not true of the nuclear envelope?
TLS Online TPP Program

#Question id: 10901

#Unit 6. System Physiology – Plant

P-proteins have been characterized at the molecular level. P-proteins from the genus Cucurbita consist of two major proteins;
TLS Online TPP Program

#Question id: 9205

#Unit 9. Diversity of Life Forms

Which of the following terms includes all of the others?
TLS Online TPP Program

#Question id: 4025

#Unit 3. Fundamental Processes

You have identified a transcription factor and hypothesize that it binds to the promoter region of a gene that encodes a protein that causes cells to stop dividing. In order to test the interaction between the transcription factor and the DNA you will need to do a specific assay. Which one of the following would you use to test your hypothesis?
TLS Online TPP Program

#Question id: 26559

#Unit 3. Fundamental Processes

Which of the following is correct regarding piRNAs
a. piRNAs which are 24–34 nucleotides long
b. It does not involve a dsRNA precursor
c. It involve a dsRNA precursor
d. piRNAs are generated by processing long ss transcripts
e. piRNAs are generated by processing long ds transcripts
f. This processing does require Dicer
g. This processing does not require Dicer