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Q12 - CwiM as a Zinc-Dependent Regulator of Mycobacterial Cell Elongation

Theoretical A Real exam question - full text reproduced under IBO's CC BY-NC-SA 4.0 license
Protein Structure, Folding & Function

Experiments found that CwiM is a regulator of Mycobacteria tuberculosis cell wall formation. The length (1) and number (2) of WT and CwiM knockout cells were assessed. Amino-acid sequence similarity analysis suggests that CwiM is homologous to zinc-dependent enzymes (3).

Figure for Q12: CwiM as a Zinc-Dependent Regulator of Mycobacterial Cell Elongation

Using the information and data, determine which of the statements are true or which are false.

A. CwiM is likely to be zinc-dependent.
B. CwiM increases cell survival rate.
C. CwiM very likely plays a role in cell elongation in M. smegmatis.
D. Cell elongation is required for survival.
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Question reproduced from IBO 2017, Theoretical Exam A, licensed under CC BY-NC-SA 4.0 - attributed to the International Biology Olympiad. Open the full exam PDF · Official answer key & worked solutions