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TLS Online TPP Program

#Question id: 3766

Individuals with the disorder xeroderma pigmentosum are hypersensitive to sunlight, and mutations to the DNA in their skin cells are left uncorrected. Why are the mutations not corrected in individuals with this disorder?

#Unit 3. Fundamental Processes

  1. The disorder makes cells unable to replicate DNA.

  2. The disorder causes mitosis to stop during metaphase.

  3. The disorder makes cells unable to form chromosomes.

  4. The disorder causes cells to be unable to repair thymine dimers.

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TLS Online TPP Program

#Question id: 2290

#Unit 1. Molecules and their Interaction Relevant to Biology

The cytoskeleton includes all of the following except
TLS Online TPP Program

#Question id: 3305

#Unit 11. Evolution and Behavior

Co-evolution is related to
TLS Online TPP Program

#Question id: 1404

#Unit 4. Cell Communication and Cell Signaling

Which of the following are transcription factors?
TLS Online TPP Program

#Question id: 13168

#Unit 10. Ecological Principles

Use the following diagram from the text showing the spread of the cattle egret, Bulbulcus ibis, since its arrival in the New World, to answer the following question.


How would an ecologist likely explain the expansion of the cattle egret?
TLS Online TPP Program

#Question id: 170

#Unit 1. Molecules and their Interaction Relevant to Biology

Desmosine, an uncommon amino acid is derived from