Question

Consider three organisms 'X' and 'Y' and 'Z'. Organism 'X' can produce ATP in presence of oxygen, while also having a specialised mechanism to survive in absence of oxygen. While 'Y' can only thrive in absence of oxygen and 'Z' dies in absence of oxygen. What can you infer about X, Y and Z? 

Options

• X is aerobe; Y is obligatory anaerobe while Z is a facultative aerobe 

• X is facultative anaerobe; Y is obligatory anaerobe; Z is an aerobe 

• X and Y are facultative anaerobes, Z is a facultative aerobe 

• x,.z are aerobes; Y is an anaerobe 

Answer 1

X is facultative anaerobe; Y is obligatory anaerobe; Z is an aerobe 

Explanation:

Anaerobes are creatures that can survive without oxygen and grow. Aerobes are living things that require oxygen to grow. Facultative anaerobes can survive both with and without oxygen. Obligatory anaerobes cannot survive in the presence of oxygen and perish there.