MCQ: the chemical theory of the Origin of life

1. The Chemical Theory of the Origin of Life posits that life arose through:
a) Supernatural intervention
b) religious rituals
c) A sequence of chemical reactions
d) Extraterrestrial influence

2. Who introduced the Chemical Theory of the Origin of Life in 1924?
a) J.B.S. Haldane
b) Ernst Haeckel
c) A.I. Oparin
d) Charles Darwin

3. The reducing atmosphere on early Earth lacked:
a) Carbon dioxide
b) Oxygen
c) Hydrogen
d) Ammonia

4. Which energy sources are thought to have facilitated the formation of complex molecules on early Earth?
a) Wind energy
b) Solar energy
c) Geothermal energy
d) UV radiation, electric discharges, volcanic activity, and cosmic rays

5. Which of the following is NOT one of the essential prerequisites for life’s emergence according to the Chemical Theory?
a) Energy source
b) Oxygen-rich atmosphere
c) Right chemicals
d) Infinite time

6. The chemical theory proposes that amino acids were likely formed through reactions involving:
a) biological processes
b) Meteor impacts
c) Volcanic eruptions
d) Electrical discharges (lightning strikes)

7. Which experiment provided supporting evidence for the Chemical Theory of the Origin of Life?
a) Mendel’s pea plant experiment
b) The Miller-Urey experiment
c) The Galileo telescope experiment
d) The Watson-Crick DNA experiment

8. What was the goal of the Miller-Urey experiment?
a) To study the behaviour of electrons in gases
b) To replicate conditions of early Earth and demonstrate the formation of simple organic compounds
c) To investigate the behaviour of planets in the solar system
d) To analyse the properties of volcanic eruptions

9. Which gas was NOT part of the mixture used in the Miller-Urey experiment to simulate early Earth’s atmosphere?
a) Methane
b) Oxygen
c) Ammonia
d) Hydrogen

10. Miller’s experiment used a mixture of CH4, NH3, H2, and water vapor in a closed flask to mimic early earth conditions. What was the temperature at which this flask was kept?
(a) 800°C
(b) 1200°C
(c) 200°C
(d) 400°C