A Prerequisite for Life as We Know It on Earth

question 20

Multiple Choice

A prerequisite for life as we know it on Earth or any other planet is

• A) sunlight.
• B) water.
• C) amino acids.
• D) nitrogen.
• E) carbon dioxide.

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Definitions:

Apoptosis

Programmed cell death, a process that allows cells to die in a controlled manner, removing unnecessary or damaged cells.

Antibiotics

Chemical substances produced by certain microorganisms or synthesized, used to kill or inhibit the growth of bacteria and treat bacterial infections.

Phagocytes

Cells responsible for defending the body by absorbing dangerous foreign materials, bacteria, and cells that are either dead or in the process of dying.

Monocytes

A type of white blood cell that plays a key role in the immune response, capable of differentiating into macrophages and dendritic cells.