NEET Biology MCQ: NCERT Origin of Life | NEET.Guide Questions

Protocells are considered a key step in the origin of life. Which of the following is NOT a characteristic typically associated with protocells?

A

Membrane-bound compartments

B

Simple metabolic activity

C

Ability to undergo fission

D

Developed DNA replication mechanisms

Question Tags

📚 Subject:Zoology

📑 Chapter:Genetic Evolution

🎯Topic:Origin Of Life

🎓 Ncert Level:Understanding

🎯Difficulty :Hard

⚡ Time Required :1 mins

🔄Ncert Concepts :Origin of Life, Protocells

Related Questions

Which gas was likely ABSENT in the early Earth's atmosphere according to the Oparin-Haldane hypothesis?

A

Methane ( $CH_4$ )

B

Ammonia ( $NH_3$ )

C

Water vapor ( $H_2O$ )

D

Oxygen ( $O_2$ )

Question Tags

📚 Subject:Zoology

📑 Chapter:Genetic Evolution

🎯Topic:Origin Of Life

🎓 Ncert Level:Remembering

🎯Difficulty :Medium

⚡ Time Required :1 mins

🔄Ncert Concepts :Origin of Life, Early Earth atmosphere, Reducing atmosphere

The …A… from the sun broke up water into hydrogen and oxygen and the …B… escaped. Oxygen combined with ammonia and methane to form …C… . CO $_2$ and others. The ozone layer was formed. As it cooled, the water vapour fell as rain, to fill all the depressions and form …D… Choose the correct option for A,B,C and D to complete the given paragraph, to NCERT textbook

A

A-IR rays, B-lighter ${{\rm{H}}_2}$ , C-water, D-oceans

B

A-UV rays, B-lighter ${{\rm{H}}_2}$ , C-water, D-oceans

C

A-UV rays, B-heavier ${{\rm{H}}_2}$ , C-water, D-oceans

D

A-UV rays, B-heavier ${{\rm{H}}_2}$ , C-water, D-oceans

Question Tags

📚 Subject:Zoology

📑 Chapter:Genetic Evolution

🎯Topic:Origin Of Life

🎓 Ncert Level:Understanding

🎯Difficulty :Medium

⚡ Time Required :2 mins

🔄Ncert Concepts :Early Earth Atmosphere, Photolysis, Chemical Reactions, Formation of Oceans

According to one of the most accepted theory, the earth atmosphere before any life had originated consists of ${{\rm{H}}_2}{\rm{O}},{{\rm{H}}_2},{\rm{N}}{{\rm{H}}_2}$ and

A

${\rm{C}}{{\rm{H}}_4}$

B

${{\rm{O}}_2}$

C

${{\rm{N}}_2}$

D

None of these

Question Tags

📚 Subject:Zoology

📑 Chapter:Genetic Evolution

🎯Topic:Origin Of Life

🎓 Ncert Level:Remembering

🎯Difficulty :Easy

⚡ Time Required :1 mins

🔄Ncert Concepts :Early Earth Atmosphere, Chemical Composition, Origin of Life

Which of the following gases was likely NOT abundant in the early Earth's atmosphere?

A

Methane

B

Ammonia

C

Water vapor

D

Oxygen

Question Tags

📚 Subject:Zoology

📑 Chapter:Genetic Evolution

🎯Topic:Origin Of Life

🎓 Ncert Level:Remembering

🎯Difficulty :Easy

⚡ Time Required :0.5 mins

🔄Ncert Concepts :Origin of Life, Early Earth Atmosphere

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

A

${\rm{N}}{{\rm{H}}_3}$

B

${{\rm{H}}_2}$

C

${{\rm{O}}_2}$

D

${\rm{C}}{{\rm{H}}_2}$

Question Tags

📚 Subject:Zoology

📑 Chapter:Genetic Evolution

🎯Topic:Origin Of Life

🎓 Ncert Level:Remembering

🎯Difficulty :Easy

⚡ Time Required :1 mins

🔄Ncert Concepts :Origin of life, Early Earth atmosphere, Atmospheric composition

Urey –Miller’s experiment mixture had the following except

A

Methane

B

${\rm{C}}{{\rm{O}}_2}$

C

Hydrogen

D

Water vapour

Question Tags

📚 Subject:Zoology

📑 Chapter:Genetic Evolution

🎯Topic:Origin Of Life

🎓 Ncert Level:Remembering

🎯Difficulty :Medium

⚡ Time Required :1 mins

🔄Ncert Concepts :Urey-Miller experiment, prebiotic chemistry, early Earth atmosphere

What happened to ${\rm{N}}{{\rm{H}}_3}$ present in the primary atmosphere during its conversion to the secondary atmosphere?

A

It got oxidized to ${{\rm{N}}_2}$ and water

B

It was absorbed by photoautotrophs

C

Most of it got oxidized to nitrogen oxides

D

It concentration was decreased due to ${{\rm{O}}_2}$ formation

Question Tags

📚 Subject:Zoology

📑 Chapter:Genetic Evolution

🎯Topic:Origin Of Life

🎓 Ncert Level:Understanding

🎯Difficulty :Medium

⚡ Time Required :2 mins

🔄Ncert Concepts :Early Earth atmosphere, oxidation-reduction, chemical reactions

The Miller-Urey experiment attempted to simulate early Earth conditions to test the chemical origin of life. Which of the following gaseous components was NOT included in their experimental setup, despite being potentially present in the early atmosphere?

A

Methane ( $CH_4$ )

B

Ammonia ( $NH_3$ )

C

Water vapor ( $H_2O$ )

D

Oxygen ( $O_2$ )

Question Tags

📚 Subject:Zoology

📑 Chapter:Genetic Evolution

🎯Topic:Origin Of Life

🎓 Ncert Level:Remembering

🎯Difficulty :Hard

⚡ Time Required :1 mins

🔄Ncert Concepts :Origin of Life, Miller-Urey Experiment, Early Earth Atmosphere

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

A

$N{H_3}$

B

$C{H_4}$

C

${H_2}$

D

${O_2}$

Question Tags

📚 Subject:Zoology

📑 Chapter:Genetic Evolution

🎯Topic:Origin Of Life

🎓 Ncert Level:Remembering

🎯Difficulty :Easy

⚡ Time Required :1 mins

🔄Ncert Concepts :Origin of life, Early Earth atmosphere, Atmospheric composition

In the early earth, organic acids were produced by the combination of ${{\rm{H}}_2}$ with

A

Ammonia and methane

B

Hydrogen

C

Organic matter

D

Sulphates and nitrates

Question Tags

📚 Subject:Zoology

📑 Chapter:Genetic Evolution

🎯Topic:Origin Of Life

🎓 Ncert Level:Remembering

🎯Difficulty :Easy

⚡ Time Required :1 mins

🔄Ncert Concepts :Origin of life, early earth atmosphere, chemical reactions

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