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TLS Online TPP Program

#Question id: 3801

Why should patients with xeroderma pigmentosum avoid sunlight?

#XL - Q Biochemistry

  1. The UV wavelengths do irreparable damage to DNA.

  2. Sunlight inhibits any residual DNA repair activity in the cell.

  3. These patients lack pigmentation to protect them from burning.

  4. Sunlight inhibits DNA polymerases.

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TLS Online TPP Program

#Question id: 1723

#XL - Q Biochemistry

Which of the following statements is the single best description of the location where adaptive immune responses arise?
TLS Online TPP Program

#Question id: 1749

#XL - Q Biochemistry

The αβ heterodimeric form of the IL-2 receptor:
TLS Online TPP Program

#Question id: 15705

#XL - S Microbiology

IAA or IBA auxins alone or in combination with a low concentration of cytokinin are important in the induction of
TLS Online TPP Program

#Question id: 412

#XL - Q Biochemistry

All of the following contribute to the large, negative, free-energy change upon hydrolysis of “high-energy” compounds except:
TLS Online TPP Program

#Question id: 172

#XL - T Zoology

Which amino acid is least likely to participate in acid-base catalysis?