Biology Unit II review 2023

Front

What process changed Earth’s early atmosphere to its current form?

Back

Photosynthesis by cyanobacteria.

Front

Who proved that organic molecules formed from inorganic molecules in the Earth’s early atmosphere?

Back

Miller and Urey.

Front

What happens during osmosis?

Back

Movement of water molecules from an area of high water concentration to an area of low water concentration.

Front

What is the first event needed for life to evolve according to the theory of chemical evolution?

Back

Synthesis of organic molecules.

Front

What theory did Robert Hooke, Anton van Leeuwenhoek, Theodor Schwann, Rudolf Virchow, and Matthias Schleiden contribute to?

Back

The Cell Theory.

Front

Define photosynthesis.

Back

The process by which green plants and some other organisms use sunlight to synthesize foods with the help of chlorophyll.

Front

What is the significance of Miller and Urey's experiment?

Back

It demonstrated that organic compounds could be synthesized from inorganic precursors under conditions thought to resemble those of early Earth.

Front

Explain the concept of chemical evolution.

Back

The theory that life arose from simple organic compounds that underwent chemical reactions over time.

Front

What is osmosis?

Back

The diffusion of water across a selectively permeable membrane.

Front

What is the Cell Theory?

Back

The theory that all living things are composed of cells, and that cells are the basic unit of life.