#Question id: 32385
#Unit 2. Cellular Organization
#Question id: 19071
#Unit 4. Cell Communication and Cell Signaling
#Question id: 7261
#Unit 5. Developmental Biology
The Turing model provides a framework for limb development. Following statements are regarding to this model:
A. In Turing’s model, morphogen A promotes the production of more morphogen A (autoactivation) as well as production of morphogen I. Morphogen I, however, inhibits the production of morphogen A (lateral inhibition).
B. In Turing’s model, morphogen A inhibits the production of more morphogen A (autoinhibition) as well as production of morphogen I. Morphogen I, however, promotes the production of morphogen A (lateral activation).
C. In Turing’s model, the reaction-diffusion dynamics can tell us how the limb bud acquires its proximal- distal polarity as well as how the number of digits is regulated at the distal tip of the limb.
D. The reaction-diffusion system has been proposed to be sufficient for establishing patterns of precartilage and noncartilage tissues.
E. According to this model, along the proximal-distal axis the AER dividing into two domains 1-the inhibitory domain 2-the active domain.
F. According to this model, along the proximal-distal axis the AER dividing into three domains 1-the inhibitory domain 2-the active domain 3-frozen domain.
Which of the following combinations are incorrect?
#Question id: 1538
#Unit 4. Cell Communication and Cell Signaling
Many aspects of the biology of stem cells, including maintenance of pluripotency, self-renewal, and differentiation, are controlled by the phenomenon of RNA interference involving a variety of small molecules of RNA.
Match the following miRNA (Column I) with their target gene (Column II).
Column I |
Column II |
a. Let-7 miRNA |
i. Bcl-2 |
b. miR-16 |
ii. PTEN phosphatase |
c. miR-125a and miR-125b |
iii. Myc |
d. miR-21 |
iv. LIN28 |
#Question id: 32302
#Unit 1. Molecules and their Interaction Relevant to Biology