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22 Cards in this Set

  • Front
  • Back
What are the three super kingdoms?
Archaea, Bacteria, Eukaryotes.
What are the six kingdoms of life?
i) Archaea
ii) Bacteria
iii) Protista
iv) Plants
v) Fungi
vi) Animalia
What is the Kepler Mission?
Uses NASA telescope like satellite, released into space, to determine whether there are any earth-like planets besides ours.
Could we be alone in the universe?
using simple mathematics at the idea of millions stars, tiny amounts of planets, and even tinier amounts of livable planets, it is likely there is one.
Are we the most advanced?
Unlikely, Universe is 12 billion years old, Earth is only 4 billion years old, likley, many other civilisations more advanced in this time.
What is Fermi Paradox?
According to this line of thinking, the Earth should already have been colonized, or at least visited. But no convincing evidence of this exists. Furthermore, no confirmed signs of intelligence elsewhere have been spotted, either in our galaxy or in the more than 80 billion other galaxies of the observable universe. Hence Fermi's question, "Where is everybody?
What is australia doing to find aliens?
Building large satellites to try and listen into an alien life form.
Is there water on mars, if so, what does it imply?
Mars Rover, Curiosity, was sent to determine whether there is water on mars, so far, found some water.
It contains evidence that potentially life-supporting water once flowed in abundance, leaving clay minerals behind.

If there was water, it means life was possibly sustainable on the planet.
What about life on jupiter?
Europa contains several distinct crusts on its surface, implying that oceans may have existed on it.
What does earth history reveal about life on earth?
Long chain of evolution, where we have increasing complexity in organisms.
Is there proof of the origin of life?
No witnesses,
Oldest rocks have no fossils at all.
Fossil records do contain bacteria (but are younger than old rocks).
Implying that life occured 1 billion years in earth history.
(assuming oldest rock is 3.9 years, fossil record is 3).
What is the importance of life in the oceans?
Primitive oceans, hot, smelly soup, containing ammonias, cyanide, methane etc....
UV light from the sun helped in creating organic synthesis, yet at this stage, it was harmful to anything.
Life stayed inside the ocean, where it was protected by the harmful rays.
(water filters UV).
What was the contradiction of a hot earth?
There is proof that the earth was actually much colder than thought, this implied that there was more evolution time for the early cells.
What were the first cells?
- prokaryotic
- heterotrophic (made own food).
- not in any fossil records
- some fossils, revealed cyanobacteria, which helped oxygenate the atmosphere and create an ozone layer protecting us from uv rays.
What are two ways to destroy evolution?
1. Giant Meteor which wiped out all the dinosaurs.
2. Snowball Earth (known to have occured twice), where the earth is covered completely in ice, and animals survive on places that are slightly less cold.
What is the cambrian explosion?
time when evolution occured at a considerably fast rate.

he Cambrian explosion, or Cambrian radiation, was the relatively rapid appearance, around 542 million years ago, of most major animal phyla, as demonstrated in the fossil record.[1][2] This was accompanied by major diversification of other organisms.[note 1] Before about 580 million years ago,[note 2] most organisms were simple, composed of individual cells occasionally organized into colonies. Over the following 70 or 80 million years, the rate of evolution accelerated by an order of magnitude[note 3] and the diversity of life began to resemble that of today
Is there evidence for evolution?
i) fossil records
ii) comparative anatomy of cells/organisms.
iii) comparing embryos
iv) comparing biochemistry etc.
v) compare dna structures.
What happens if we compare genome sequences?
Humans and Chimpanzees have only small differences.
How do classify?
Classifying organisms help to contain diversity into groups.
What is taxonomy?
description and naming of organism.

1. The classification of organisms in an ordered system that indicates natural relationships
what is classification?
recognizing related groups and naming the groups.
what is phylogeny?
the evolutionary history of an organism

2. the evolutionary history of a group of organisms, esp. as depicted in a family tree.