Waec Model Questions Vol1 2017 Biology Question 45
Practice objective / multiple choice question 45 from the 2017 Waec Model Questions Vol1 Biology examination.
A microorganism isolated from a hot spring shows the following characteristics: (i) cell membrane composed of ether‑linked lipids, (ii) no peptidoglycan cell wall, (iii) optimal growth temperature 80 °C, (iv) chemoautotrophic metabolism using H₂S as electron donor, (v) negative result in the Gram stain. Based on these features, identify the domain and the most probable phylum to which this organism belongs.
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This is Waec Model Questions Vol1 2017 Biology Question 45. It is one of the objective questions from the 2017 Waec Model Questions Vol1 Biology examination.
Difficulty level: Hard .
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