Astro Life AlphabetVersion en ligne

Origin concepts for life

par Daniel Heras González
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z

Starts with A

Organic molecules that are the building blocks of proteins.

Starts with B

A measurable sign that may indicate the presence of life.

Starts with C

Basic unit of life that carries genetic material and metabolism.

Starts with D

.Process in which one cell produces new cells; mitochondria and chloroplasts reproduce in a similar way to bacteria.

Starts with E

The biological process in which organisms change over generations through mechanisms such as natural selection.

Starts with F

Process studied by Louis Pasteur by which microorganisms such as yeast obtain energy from sugars without using oxygen.

Starts with G

Volatile compounds liberated by volcanoes.

Starts with H

A hypothesis proposing that different early-life processes may have developed together rather than one appearing first.

Starts with I

Research facility currently being assembled in Low Earth Orbit.

Starts with J

The planet orbited by Europa, one of the most interesting moons in the search for possible life.

Starts with K

A vast region of the outer solar system beyond Neptune filled with icy bodies, comets, and dwarf planets like Pluto, explored by NASA's New Horizons mission.

Starts with L

Biomolecules that can spontaneously form membranes or vesicles in water.

Starts with M

Cell organelle proposed to have originated from a free-living aerobic bacterium.

Starts with N

Building blocks of DNA and RNA.

Starts with O

Gas that accumulated dramatically during the Great Oxidation Event.

Starts with P

Scientist whose experiments challenged bacteria arising spontaneously.

Contains Q

Optimal geographic region for launching orbital rockets.

Starts with R

Hypothesis proposing RNA as early informational molecule.

Starts with S

Flask with a curved tube that allowed air to enter while trapping microorganisms.

Starts with T

Environmental factor that determines whether liquid water can exist.

Contains U

One of the four major groups of organic biomolecules.

Starts with V

The twin space probes launched in 1977 that have explored outer planets and entered interstellar space.

Starts with W

A substance essential for life that acts as a solvent and allows many chemical reactions to occur.

Contains X

Planets outside our Solar System.

Contains Y

Relationship in which two different organisms live closely together; obtaining a positive outcome for both.

Contains Z

Protective atmospheric layer that absorbs much ultraviolet radiation.