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Question 19M.1.HL.TZ1.28

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Date May 2019 Marks available [Maximum mark: 1] Reference code 19M.1.HL.TZ1.28
Level HL Paper 1 Time zone TZ1
Command term Determine Question number 28 Adapted from N/A
28.
[Maximum mark: 1]
19M.1.HL.TZ1.28

The image shows a polysome in a bacterial cell.

[Source: © International Baccalaureate Organization 2019]

 

How many genes have been transcribed?

A. 1

B. 2

C. 3

D. 4 

[1]

Markscheme

A

Examiners report

The tense given in this question was misleading – ideally, the question should have read “How many genes have been transcribed?” The answer to the question actually asked was zero, but as this was not offered the next best answer was A – one gene has been transcribed and in the diagram the mRNA product of this transcription is being repeatedly translated.

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