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TLS Online TPP Program

#Question id: 11174

Why might a peahen choose to mate with a peacock with a long, gaudy tail?

#Unit 10. Ecological Principles

  1. He is easier to find than a male with a plain tail

  2. She feels sorry for him
  3. Actually, it is the male (peacock) that chooses its mate
  4. A male with such a tail who is able to survive and reproduce likely carries genes that will enhance the survival of the peahen's young
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TLS Online TPP Program

#Question id: 28725

#Unit 2. Cellular Organization

Soluble ER-resident proteins contain which sorting signal that allows them to be retrieved?
TLS Online TPP Program

#Question id: 28072

#Unit 6. System Physiology – Plant

During photosynthesis water splitting takes place in
TLS Online TPP Program

#Question id: 2800

#Unit 2. Cellular Organization

When chromatin is extracted from nuclei and viewed in the electron microscope, its form depends upon the salt concentration to which it is exposed. What is the form of chromatin when it is isolated in isotonic buffers, i.e. same salt concentration as in cells (about 0.15 M KCl)?
TLS Online TPP Program

#Question id: 8927

#Unit 9. Diversity of Life Forms

Arthropods invaded land about 100 million years before vertebrates did so. This most clearly implies that
TLS Online TPP Program

#Question id: 10398

#Unit 6. System Physiology – Plant

Which of the following phytochromes shows very few responses due to their highly regulated transcriptional and translational level?