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TLS Online TPP Program

#Question id: 28243

 which of the following cells exist in a regulatory microenvironment in Drosophila testes where the stem cells for sperm reside

#Unit 5. Developmental Biology
  1. supporting somatic cells
  2. gonialblast cells
  3. Hub cells
  4. Spermatogonia
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TLS Online TPP Program

#Question id: 11520

#Unit 2. Cellular Organization

For the SERCA pump, how many Ca2+ ions moves across the membrane during each catalytic cycle ?
TLS Online TPP Program

#Question id: 3922

#Unit 3. Fundamental Processes

The σ70 subunit in E. coli RNA polymerase acts as a/an __.
TLS Online TPP Program

#Question id: 8705

#Unit 9. Diversity of Life Forms

If you were using cladistics to build a phylogenetic tree of cats, which of the following would be the best outgroup?
TLS Online TPP Program

#Question id: 28655

#Unit 2. Cellular Organization

The protein ring complexes that establish linkages between sister chromatids that is called___
TLS Online TPP Program

#Question id: 5842

#Unit 8. Inheritance Biology

 In homologous recombination in E. coli, the protein that moves along a double-stranded DNA, unwinding the strands ahead of it and degrading them, is: