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TLS Online TPP Program

#Question id: 3640

Which of the following is true for the mechanism of excision repair?

#Unit 3. Fundamental Processes

  1. Endonuclease cleavage removes a portion of the damaged strand.

  2. The gap is filled in by DNA polymerase I

  3. The sugar-phosphate backbone is resealed by DNA ligase.

  4. All of the above are correct.

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TLS Online TPP Program

#Question id: 12232

#Unit 10. Ecological Principles

White-breasted nuthatches and Downy woodpeckers both eat insects that hide in the furrows of bark in hardwood trees. The Downy woodpecker searches for insects by hunting from the bottom of the tree trunk to the top, while the White-breasted nuthatch searches from the top of the trunk down. These hunting behaviours best illustrate which of the following ecological concepts?
TLS Online TPP Program

#Question id: 8856

#Unit 9. Diversity of Life Forms

Which of these can be observed in the mesohyl of various undisturbed sponges at one time or another?

1. amoebocytes

2. spicules

3. spongin

4. zygotes

5. choanocytes
TLS Online TPP Program

#Question id: 10955

#Unit 7. System Physiology – Animal

A 2-year-old boy bruises easily and has previously had bleeding gums. The maternal grandfather has a bleeding disorder. His physical examination shows several small bruises on the legs. Of which coagulation factor would you suspect this patient to be deficient?
TLS Online TPP Program

#Question id: 5313

#Unit 11. Evolution and Behavior

Which of the following statements correctly describes one of the characteristics of alternative splicing in vertebrate genomes?
TLS Online TPP Program

#Question id: 24608

#Unit 2. Cellular Organization

Which of the following is correctly defining the gene family