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TLS Online TPP Program

#Question id: 4322

If a particular operon encodes enzymes for making an essential amino acid and is regulated like the trp operon, then

#Unit 3. Fundamental Processes

  1. the amino acid inactivates the repressor.

  2. the repressor is active in the absence of the amino acid.

  3. the amino acid acts as a corepressor.

  4. the amino acid turns on transcription of the operon.

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TLS Online TPP Program

#Question id: 3620

#Unit 8. Inheritance Biology

Which of the following word is a short form of allelomorph?
TLS Online TPP Program

#Question id: 1290

#Unit 4. Cell Communication and Cell Signaling

Hydroxyproline is important in the formation of staple collagen polymers within cells. The formation of hydroxyproline requires:
TLS Online TPP Program

#Question id: 11334

#Unit 10. Ecological Principles

To qualify as a biodiversity hotspot, a region must meet following two strict criteria
TLS Online TPP Program

#Question id: 10743

#Unit 10. Ecological Principles

 Darlington proposed that
TLS Online TPP Program

#Question id: 4721

#Unit 8. Inheritance Biology

PKU, results from a recessive allele; persons homozygous for this allele, if untreated, exhibit mental retardation, blue eyes, and light skin color. This character categorized as