BM108 BLOCK A LECTURE 1

HideShow resource information
  • Created by: amykane
  • Created on: 07-05-18 06:47
What is the difference between viruses and living organisms?
viruses don't make their own energy (they use the energy of the host cell). They don't grow (they reproduce using host cell)
1 of 14
What is the second law of thermodynamics?
Entropy is a measure of disorder. Disorder must always increase, physical systems needs decay
2 of 14
How does life combat this?
Life creates order:Biological systems organise and maintain themselves, they grow and reproduce. Life needs energy to combat entropy.
3 of 14
When did the big bang happen?
13.82 billion years ago
4 of 14
When did earth formation take place?
4.6 billion years ago
5 of 14
What is the Theia impact and when did it happen?
4.5 billion years ago. hypothesis that suggests that the Moon formed out of the debris left over from a collision between Earth and an astronomical body the size of Mars
6 of 14
Where was possible beginnings of life found 3.5 billion years ago?
on the "Apex Ridge" in Australia. also with blue-green cyanobacteria (algae)
7 of 14
What is tidal locking?
One side of the moon is always facing us
8 of 14
Places where life could have started?
Deep sea vents. Hot springs (they are made up of a primordial soup of chemicals.)
9 of 14
What type of organism is found on "Robinson Ridge" and what makes it unique?
Antarctic bacterial species recently discovered. They can survive by scavenging trace atmospheric gases, including hydrogen and carbon monoxide
10 of 14
Why do people believe clay could have been an important home for early chemical life?
Clay provides an ordered microenvironment for complex molecules to assemble without immediate decomposition by hydrolysis – clay acts as a catalyst for life
11 of 14
What is the Miller-Urey experiment?
Simple gases mixed in an environment thought to mirror early Earth.Over 20 amino acids formed
12 of 14
Why do people think RNA could have created life?
in its single stranded form is enzymatic and easily replicated
13 of 14
Earth is described as being in the “goldelox zone”. What does this mean?
in a position that is neither too hot or too cold
14 of 14

Other cards in this set

Card 2

Front

What is the second law of thermodynamics?

Back

Entropy is a measure of disorder. Disorder must always increase, physical systems needs decay

Card 3

Front

How does life combat this?

Back

Preview of the front of card 3

Card 4

Front

When did the big bang happen?

Back

Preview of the front of card 4

Card 5

Front

When did earth formation take place?

Back

Preview of the front of card 5
View more cards

Comments

No comments have yet been made

Similar Biology resources:

See all Biology resources »See all Biology resources »