Hadean Eon

Question 2

Archaean

Answer 2

Anaerobic bacterial life, oxygen starts to accumulate

(3000-2500 Ma)

Relating to the highly metamorphosed rocks formed in the early Precambrian era

Belonging to the earlier of the divisions of Precambrian time (approx. 3.8-2.5 billion years ago)

Question 3

Adhesion

Answer 3

Frictional grip

The action or process of adhering to a surface or object

Question 4

Eon

Answer 4

An indefinite and very long period of time

Unit of time equal to a billion years or more

Question 5

Biomonomers

Answer 5

A small organic molecule that can chemically bond to other monomers to form a biopolymer

Question 6

Biopolymers

Answer 6

A polymeric substances occuring in living organisms made up of biomonomers

ie. protein, cellulose, DNA

Question 7

Carbon

Answer 7

Element that has two main forms (diamond and graphite), impure form is charcoal

Forms organic compounds

In many inorganic compounds as well

Question 8

Central Dogma

Answer 8

Main thesis of molecular inheritance

DNA -> RNA -> protein

Question 9

Chemical Evolution

Answer 9

The changes and transformation of chemical elements, compounds and molecules

Question 10

Cohesion

Answer 10

Intermolecular attraction that forms a united whole

Question 11

Crystal Lattice of Water

Answer 11

Geometric arrangment of points in space at which atoms, molecules or ions of a crystal occur

Three dimensional

When water freezes it forms a clathrate structure

Question 12

Emergence

Answer 12

The process of coming into being, becoming exposed or important or prominent

Question 13

Evaporation

Answer 13

The process of being vapour, liquid to gas

(Vaporization)

Question 14

Geological TIme Scale

Answer 14

Chronologic measurement relating stratigraphy (branch of geology concerned with order and position of historical layers of rock) to time

Question 15

Green House Gases

Answer 15

Gases in the atmosphere that absorb and emit radiation within the thermal infrared range

ie. Carbon dioxide, Methane, Nitrous oxide, Sulfur hexafluoirde, Chlorinated fluorocarbons (CFCs)

Question 16

Hadean Eon

Answer 16

Earliest eon in the history of the Earth from the first accretion of planetary materials

(4600 - 3800 Ma)

Building phase, formation of the solar system, ends with the origin of life

Question 17

Hydrogen Bond

Answer 17

A chemical bond with a hydrogen atom that is attracted to an electronegative atom

ie. nitrogen, oxygen, fluorine

Question 18

Hydrophilic

Answer 18

Has a tendency to mix with, dissolve in or be wetted by water

“Water loving”

Question 19

Hydrophobic

Answer 19

Repels or fails to mix with water

“Phobia” - does not like water

Question 20

Hydrothermal Vents

Answer 20

An opening in the seafloor out of which heated and mineral rich water flows

Question 21

Interstellar Organic Compounds

Question 22

Interstellar Space Dust

Answer 22

Comes from dying stars as they slowly burn out or use up their fuel

Large clouds of this dust will collect in space

Question 23

Micelles

Answer 23

An aggregation of molecules in a colloidal solution

Colloidal solution: homogeneous, noncrystalline susbtace consisting of large molecules of finely divided particles of one substance dispersed through a second substance, gelatinous consistency

ie. gels, sols, emulsions

Question 24

Miller Experiment

Answer 24

Simulated hypothetical conditions thought at the time to be present on early Earth. It tested for occurence of chemical evolution

Question 25

Nonpolar Compound

Question 26

Panspermia

Question 27

Phanerozoic Eon

Question 28

Polar Compound

Question 29

Prebiotic Soup

Question 30

Proteins First Hypothesis

Question 31

Proterozoic Eon

Question 32

Protocells

Question 33

Reducing Atmosphere

Question 34

RNA World

Question 35

Specific Heat

Question 36

Spontaneous Origins

Question 37

Surface Tension

Question 38

Surfactant

Question 39

Vesicles

Question 40

Volcanic Outgassing