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#3 | Origin of Life: Chemical Evolution: 1
(Zoology (2021)) > Evolution

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Related Practice Questions :

Identify the correct sequence in which the following substances have appeared during the course of evolution of life on earth.

1. glucose, amino acids, nucleic acids, proteins
2. ammonia, amino acids, proteins, nucleic acids
3. water, amino acids, nucleic acids, enzymes
4. amino acids, ammonia, phosphates, nucleic acids
 51%
Level 3: 35%-60%
Hints

Which was absent in the atmosphere at the time of origin of life?

1. NH3

2. H2   

3. O2   

4. CH4

 89%
Level 1: 80%+
Hints

Following are the two statements regarding the origin of life

I.

The earliest organisms that appeared on the earth were non-green presumably anaerobes.
II.

The first autotrophic organisms were the chemoautotrophs that never released oxygen.

Of the above statements which one of the following options is correct?

1. II is correct but I is false
2. Both I and II are correct
3. Both I and II are false
4. I is correct but II is false 
 67%
Level 2: 60%+
NEET - 2016
Hints

The first living organisms that appeard on the planet, according to the most accepted

view, were

1. anaerobic

2. aerobic

3. photosynthetic

4. none of the above

 87%
Level 1: 80%+
Hints

Which of these are considered most essential in the origin of life?

1. Enzymes

2. Nucleic acids

3. Carbohydrates

4. Proteins

 72%
Level 2: 60%+
AIIMS - 2001
Hints

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