Zadanie 2c
Outline how mRNA contributes to translation in a eukaryotic cell.
Protein synthesis
Umiejętności w tym dziale
Umiejętności z tego działu sprawdzają 32 zadania wzorowane na arkuszach IB z lat 2022–2026. Dział pojawia się w 28 z 57 arkuszy w bazie.
Zadania z tego działu: 32 Otwórz w wyszukiwarce z filtrami
Zadanie 6
Common cellular features coexist with the diversity produced by evolution. (a) Describe the roles of components shared across cellular organisms. (b) Discuss how separate populations can become distinct species. (c) Outline key features of the genetic code.
Zadanie 7
Three mRNA codons for alanine are 5′-GCU-3′, 5′-GCC-3′ and 5′-GCA-3′. Which anticodon could belong to an alanine-carrying tRNA? A. 3′-CGA-5′ B. 3′-GCU-5′ C. 3′-CGT-5′ D. 3′-AAA-5′
Zadanie 7
One DNA coding-strand triplet changes from 5′-TCT-3′ to 5′-TGT-3′. All other triplets remain unchanged. Use the supplied coding-strand table. What follows from this substitution? A. Every later triplet is shifted by one base B. The encoded chain loses exactly…
- Tabela do uzupełnienia
Zadanie 6
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…
Zadanie 7
Use the codon information to choose an mRNA that encodes Val–Lys–Gly–Tyr. mRNA codon | Amino acid GUU, GUC, GUA, GUG | Val AAA, AAG | Lys GGU, GGC, GGA, GGG | Gly UAU, UAC | Tyr GAU, GAC | Asp GCU, GCC, GCA, GCG | Ala CAA, CAG | Gln UUU, UUC | Phe A. GUC AAG…
Zadanie 7
Biological function depends on coordinated structures and recurring processes. (a) Outline how chromosome behaviour in mitosis produces genetically equivalent cells. (b) Describe the production of mRNA in the nucleus. (c) Explain how arterial and venous…
Zadanie 2b
Identify X and Y.
- Materiał graficzny
Zadanie 2c
Explain why the polypeptide chains differ in length.
- Materiał graficzny
Zadanie 6
Which row demonstrates degeneracy of the genetic code? Row | mRNA codons | Encoded amino acids P | AAA GCU AAA | Lys–Ala–Lys Q | AUG UGG GAA | Met–Trp–Glu R | UCU GGA UCC | Ser–Gly–Ser S | UAC GAC AAC | Tyr–Asp–Asn A. P B. Q C. R D. S