Describe how mRNA, tRNAs and ribosomal subunits interact to assemble a polypeptide.
Tę umiejętność sprawdza 5 zadań wzorowanych na arkuszach IB z lat 2022–2026.
A ribosome is elongating a polypeptide. Which arrangement allows the next peptide bond to form? A. Two mRNA templates are aligned in the large subunit B. A tRNA carrying the growing chain and an aminoacyl-tRNA occupy adjacent ribosomal sites C. The DNA…
Which statement accurately describes the production of a polypeptide from an mRNA message? A. RNA polymerase joins amino acids while tRNA codons bind mRNA anticodons B. A ribosome joins nucleotides after matching the mRNA to DNA C. A ribosome supports…
(i) Identify X. (ii) Explain the role of the ribosomes associated with X. (iii) Outline evidence that molecules containing the labelled amino acids move from X to the Golgi apparatus.
(a) Outline translation of an mRNA molecule in the cytoplasm. (b) Describe how homologous proteins can provide evidence about evolutionary relationships. (c) Explain how proteins bring about skeletal muscle contraction.
Outline the role of tRNA during synthesis of a chain in this complex.
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