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TLS Online TPP Program

#Question id: 7164

If an amphibian zygote is manipulated so that the first cleavage plane fails to divide the gray crescent, then ________.

#Unit 5. Developmental Biology
  1. the daughter cell with the entire gray crescent will die
  2. both daughter cells will develop normally, because amphibians are totipotent at this stage
  3. only the daughter cell with the gray crescent will develop normally

  4. both daughter cells will develop abnormally

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TLS Online TPP Program

#Question id: 12026

#Unit 7. System Physiology – Animal

Pepsinogen is converted to its active form in the stomach by ________.
TLS Online TPP Program

#Question id: 4215

#Unit 3. Fundamental Processes

When an oligosaccharide is covalently bonded to an asparagine (or other amino acid) side chain, the resulting product is a(n)
TLS Online TPP Program

#Question id: 3296

#Unit 11. Evolution and Behavior

Some beetles and flies have antler-like structures on their heads, much like male deer. The existence of antlers in beetle, fly, and deer species with strong male-male competition is an example of
TLS Online TPP Program

#Question id: 11504

#Unit 9. Diversity of Life Forms

Which organisms represent the common ancestor of all photosynthetic plastids found in eukaryotes?
TLS Online TPP Program

#Question id: 11473

#Unit 7. System Physiology – Animal

Lateral inhibition via horizontal cells in the mammalian retina ________.