Question

Yoghurt contains living bacteria. Bacteria are also capable of respiring anaerobically. If a
sealed carton of yoghurt is left for a long time, the lid bulges upwards. Suggest why this
happens.

Answer 1

Answer:

As the product of resperation , the gas which is formed bulges the lid upwards

Explanation:

Answer 2

Answer:

due to production of carbon dioxide

Explanation:

anaerobic respiration means in the absence of oxygen

bacteria(some) , fungi (ex-yeast) in absence of oxygen respire and releases carbondioxide as a part of byproduct in its respiration which leads to the bulged out appearence

we can see this in some other cases such as baked cakes , dough prepared for making idly , dosa

and most common example cheese (swiss cheese , roquifort cheese , camembert cheese)

I hope i got this