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

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

1. NH₃

2. H₂   

3. O₂   

4. CH₄

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 

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

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

1. Enzymes

2. Nucleic acids

3. Carbohydrates

4. Proteins