Origin of Life and Evolution

During the Urey-Miller experiment, which organic molecules were produced?

• Carbohydrates

• DNA

• Amino acids

• Lipids

What condition was essential for the origin of life, as there was no oxygen to destroy the new organic molecules?

• Highly acidic environment

• Anoxic conditions

• Extremely high temperatures

• Strong radiation

Which of the following is NOT a theory for the origin of life on Earth?

• Lightning strikes on shallow water

• Energy from hydrothermal sources

• Evolution of life from minerals

• Panspermia from other parts of the Solar System

Which locations in the Solar System are considered potential sites for the development and survival of life?

• Venus and Mercury

• Earth's moon

• Mars, Enceladus, and Europa

• Jupiter and Saturn

Why is fossilisation early in Earth's history considered rare?

• Life was primarily macroscopic and hard-bodied

• Ancient rocks have been well-preserved over time

• Life was microscopic and soft-bodied

• Fossils were intentionally destroyed

What is the approximate age of the oldest fossil cells?

• 500 million years

• 2500 million years

• 3500 million years

• 100 million years

The first organisms capable of photosynthesis are known as:

• Archaea

• Cyanobacteria

• Algae

• Diatoms

The production of oxygen by photosynthesis eventually resulted in:

• An increase in carbon dioxide levels

• The depletion of atmospheric gases

• The formation of the ozone layer

• The oxygen in our atmosphere today

What are stromatolites?

• Fossils of trilobites

• Colonial structures built by early humans

• Layered dome structures built by cyanobacteria

• The first multicellular organisms

During which geological period did the "Cambrian explosion" occur?

• Jurassic

• Cretaceous

• Devonian

• Cambrian