Biology - Online Test
Tanay is diagnosed with a tumor in his parathyroid. He will show out of the following symptoms
i. excretion of calcium in urine
ii. osteoporosis
iii. tetany
iv. deposition of calcium in kidney tubules
The bacteria which grows anaerobically on cellulose material and produces large amount of methane along with and are collectively called
Methanogens are autotrophic archebacteria that use anaerobic respiration for ATP synthesis.
Methanogens use CO2 taken up from their growth environment as the carbon substrate for growth. They use some CO2 as the ultimate oxidizing agent of an electron transport chain which, by a chemiosmotic mechanism, maintains a transmembrane electrochemical ion gradient which powers ATP production.
The reducing agent that drives the electron transport chain is hydrogen also taken up from the growth environment. This hydrogen is the waste end product of the metabolism of other, heterotrophic microorganisms. Methanogens use this hydrogen and this process maintains a lowered hydrogen partial pressure in the reticulo-rumen.
It is present in dung of animals.
i. good ozone present in troposphere, and acts as shield against ultraviolet rays
ii. bad ozone is a severe pollutant in stratosphere and is dangerous to living beings.
