Origin of Life

Front

What was absent in Earth's early atmosphere?

Back

Free oxygen.

Front

What type of cells are mitochondria and chloroplasts thought to be?

Back

Prokaryotic cells engulfed by a larger one.

Front

What theory suggests that lightning and solar radiation transformed atmospheric chemicals into biomolecules?

Back

Primordial soup theory.

Front

What type of organisms were the first prokaryotes?

Back

Anaerobic organisms.

Front

What did Louis Pasteur demonstrate with his goose-neck flask experiment?

Back

Life begins from other organisms.

Front

What is the primordial soup theory?

Back

A theory that explains how life began from simple organic compounds in Earth's early oceans.

Front

What are prokaryotic cells?

Back

Single-celled organisms that lack a nucleus and membrane-bound organelles.

Front

What is anaerobic respiration?

Back

A type of respiration that does not require oxygen.

Front

What is the significance of chloroplasts in eukaryotic cells?

Back

They are responsible for photosynthesis, converting light energy into chemical energy.

Front

What is the role of mitochondria in cells?

Back

They are the powerhouse of the cell, generating ATP through cellular respiration.