Practice Questions

  1. Home
  2. Free Resources
  3. Practice Questions
  4. 8078
TLS Online TPP Program

#Question id: 11296

Which of the following statements is true?

#Unit 10. Ecological Principles
  1. Oligotrophic lakes contain more nutrients than eutrophic lakes.
  2. Xerarch succession is primary succession that occurs in salt-water environments.
  3. Most ecologists believe that most communities achieve a stable, unchanging climax vegetation.
  4. A mature ecosystem has greater species richness, greater biomass, and less net productivity than a younger stage of succession.
More Questions
TLS Online TPP Program

#Question id: 16315

#Unit 7. System Physiology – Animal

Eustress
TLS Online TPP Program

#Question id: 7235

#Unit 5. Developmental Biology

Following statements are regarding to the wingless gene in drosophila.

A. In the cells transcribing the wingless gene, wingless mRNA is translocated by its 3’UTR to the apex of the cell. At the apex, the wingless message is translated and secreted from the cell.

B. The cells expressing engrailed can bind this protein because they contain Patched, which is the Drosophila membrane receptor protein for Wingless.

C. Binding of Wingless to Frizzled activates the hedgehog signal transduction pathway, resulting in the continued expression of engrailed.

D. Wingless protein also acts in an autocrine fashion, maintaining its own expression.

Which of the following combinations is correct?
TLS Online TPP Program

#Question id: 26431

#Unit 3. Fundamental Processes

If the mismatch is near 3’ then which of the following will degrade strands of DNA in the 5’ → 3’or 3’→  5’ direction
TLS Online TPP Program

#Question id: 9155

#Unit 9. Diversity of Life Forms

The success of plants extending their range northward following glacial retreat is primarily determined by ________.
TLS Online TPP Program

#Question id: 4811

#Unit 8. Inheritance Biology

Three incompletely link gene as a B-A-C order. A cross allowed between AAbbcc X aaBBCC produce f1 progeny allowed test cross. Which of the following offspring is a result of double cross over?