Tuesday, August 23, 2016

Developmental Biology MCQs Part 1

Developmental Biology MCQs Part 1
1. The following is a class of proteins that is part of the complex that regulates the central events of the cell cycle.
  • cyclins
  • caspases
  • tublins
  • none of these
2. We assay the activity of a particular MAP kinase in two different cell types and find that activity is present in one cell but not the other. Possible reason for this differential activity includes:
  • diffential MAP kinase gene transcription
  • diffrential mRNA processing of the MAP kinase transcript
  • diffential translation of the MAP kinase transcript
  • all of these
3. Tumor suppressors include genes whose normal functions are:
  • cell adhesion
  • activators of apoptosis
  • c3
  • d3
4. If we transplant an amphibian optic cup subjacent to head ectoderm, a lens forms from the ectoderm. However of we transplant the optic cup subjacent to trunk ectoderm, no lens forms. The diffential response by the head and trunk actoderm could be due to diffential expression of
  • extracellular matrix
  • intiator capassees
  • receptor
  • actin
5. "Death receptors" are likely to activate
  • paracrine signals
  • ubiquitin
  • cyclin dependent kinase inhibitors(CKIs)
  • initiator caspases
6. The best commercial sponges are found in the warm waters of:
  • Carabian sea
  • Mediterranean sea
  • Red sea
  • none of these
7. Which one of the following structures determines the type of tooth to be formed?
  • Ectoderm
  • Mesoderm
  • Ectomesenchyme
  • Endoderm
8. Simple binary fission is found in
  • Paramecium
  • Sponge
  • Euglena
  • Amoeba
9. Paramecium and Planaria exhibit
  • Simple binary fission
  • Transverse binary fission
  • Longitudinal binary fission
  • Oblique binary fission
10. Which of the following animal show Longitudinal binary fission
  • Euglena and Vorticella
  • Opalina and Monocystis
  • Volvox and Chlamydomonas
  • Entamoeba and Trypanosoma
Developmental Biology MCQs

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