Use the figure below to answer the following six questions: 5. 1. 2. AUG AUG PIP

Question

Use the figure below to answer the following six questions: 5. 1. 2. AUG AUG PIPIP UGA 6. UAG UA 3. 18. Number 1 and number 6 point to the 3'- and 5-untranslated regions, respectively. a) True B) False Sectors marked with the number 3 are ribosomal binding sites. a) True 19. B) False 20. Number 5 points to open reading frames (protein-coding regions). a) True B) False 21. Triplets indicated with the number 2 are termination codons 22. Triplets indicated with the number 4 are termination codons. 23. The figure represents a eukaryotic message. a) True B) False a) True B) False a) True B) False

Explanation / Answer

18. TRUE

1 and 6 regions are before and after the AUG and UAG respectively. So, they are UTRs.

19. TRUE

The sites marked with 3 are just upstream to AUG. SO, they can be ribosome binding sites.

20. TRUE

Number 5 denotes the open reading frames of genes.

21. FALSE

Triplets indicated with 2 are start codons (AUG).

22. TRUE

Triplets indicated with 2 are termination codons (UAG, UGA, and UAA).

23. FALSE

A single transcript contains multiple coding sequences (polycistronic mRNA) which is characteristic of prokaryotes.

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