The first cells on this planet lived in atmosphere that lacked (A)_____

Assertion : The complete combustion of glucose, which produces CO_(2)" and "H_(2)0 as end products, yields energy most of which is given out as heat. Reason: There are sufficient reasons to believe that the first cells on this planet lived in an atmosphere that lacked oxygen.

Respiration requires O_(2) . How did the first cells on the earth manage to survive in an atmosphere that lacked O_(2) ?

Respiration requires O2. How did the first cells on the earth manage to survive in an atmosphere that lacked O2?

The planet which has no atmosphere is

Explain why some planets do not have atmosphere.

The living cell was first discovered by

Who first saw and described a live cell

Who first saw and described a live cell

Who first saw and described a live cell