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TLS Online TPP Program

#Question id: 13159

How signaling is involved in ensuring that yeast cells fuse only with cells of the opposite mating type?

#Unit 4. Cell Communication and Cell Signaling
  1. The two cells of opposite mating type (a and alpha) each secrete a certain signaling molecule, which can only be bound by receptors carried on cells of the opposite mating type. Thus, the a mating factor cannot bind to another a cell and cause it to grow toward the first a cell. Only an alpha cell can “receive” the signaling molecule and respond by directed growth.
  2. The two cells of opposite mating type (a and alpha) each secrete a certain signaling molecule, which can only be bound by receptors carried on cells of the same mating type. Thus, the a mating factor can bind to another a cell and cause it to grow toward the first a cell.
  3. The two cells of opposite mating type (a and alpha) each proteins attached to the plasma membrane of one cell can interact directly with cell-surface receptors on adjacent cells. Thus, the a mating factor can directly bind to another a cell and cause it to grow.
  4. The two cells of opposite mating type (a and alpha) each respond to substances that they themselves release.
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TLS Online TPP Program

#Question id: 26457

#Unit 3. Fundamental Processes

In the -10 element TATAAT most conserved sequence are
TLS Online TPP Program

#Question id: 23777

#Unit 7. System Physiology – Animal

The area over the optic disk, which lacks the visual receptors, is known as  
TLS Online TPP Program

#Question id: 851

#Unit 1. Molecules and their Interaction Relevant to Biology

Methods is the Rosetta program, formulated by David Baker. To satisfy the program’s computational needs, a volunteer network of ∼100,000 computers, known as Rosetta@home, provides the 500,000 or so hours of processing time required to generate a structure;
TLS Online TPP Program

#Question id: 16493

#Unit 12. Applied Biology

35S promoter sequences derived from cauliflower mosaic virus shows which type of expression.
TLS Online TPP Program

#Question id: 11921

#Unit 10. Ecological Principles

Which of the following would be considered to be a natural population in a pond?