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TLS Online TPP Program

#Question id: 3949

Which of the following observations supports the view that ribosomal RNA has catalytic activity?

#Unit 3. Fundamental Processes

  1. The base sequence of rRNAs is highly conserved, whereas the amino acid sequence of ribosomal protein is not.

  2. Bacteria that develop antibiotic resistance have base substitutions on the rRNA, but do not have amino acid substitutions on the ribosomal proteins.

  3. The peptidyl transferase reaction is sensitive to ribonucleases.

  4. All of the above.

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TLS Online TPP Program

#Question id: 32323

#Unit 1. Molecules and their Interaction Relevant to Biology

If b-galactosidase is hydrolyses lactose with standard free change -16 kJ/mol then this reaction is
TLS Online TPP Program

#Question id: 33116

#Unit 1. Molecules and their Interaction Relevant to Biology

 Represents
TLS Online TPP Program

#Question id: 5606

#Unit 5. Developmental Biology

During which one of the following stages of A. thaliana embryogenesis, cell elongation throughout the embryonic axis and further development of the cotyledons occur?
TLS Online TPP Program

#Question id: 12508

#Unit 8. Inheritance Biology

In this pedigree I 1 and II 2 have Becker muscular dystrophy which shows X-linked recessive inheritance. III 2 has oculocutaneous albinism which shows autosomal recessive inheritance with an incidence in the general population of 1 in 10 000. The disease status for both Becker muscular dystrophy and oculocutaneous albinism is unknown for IV 1 and IV 2.
What is the probability that III 3 is a carrier of oculocutaneous albinism?
TLS Online TPP Program

#Question id: 23052

#Unit 12. Applied Biology

Adh1 promoter responds to______I________, while cab and rbcs promoter respond to_____II______