Life/Earth
Approx. how old is Earth?
4.5 Billion years old (accepts anywhere between 4-4.9 billion yrs)
The Panspermia Big Bang states life originated where?
Space
Chemical evolution evolves toward ____ (simplicity/complexity?)
simplicity
What was first the plant or animal
Due to fossil evidence, we know that the plant came first
Life can be explained with three simple words
They start with: G, R, D
Growth, Reproduce, and Death
What was the first period called on Earth?
Hadeon Eon.
Name 5 Theories of Life Origins
-Clay/Ice
-Panspermia Big Bang
-RNA World
-Deep Sea Thermal Vents
-Abiogenesis
-Biogenesis
-Extraterrestrial Origins
What makes chemical evolution different from biological evolution?
Chemical evolution refers to things incapable of reproduction and are therefore not alive
Which came first prokaryote or Eukaryote? Explain
Prokaryote --> fossil evidence. And eukaryotes are believed to come from Prokaryotes.
Which period is where most modern life developed.
The Proterozoic period
Name 6 characteristics of life
Reproduction
Homeostasis
Metabolism
Heredity
Response to stimuli
Cellular Organization
Adaptation through evolution
What is the difference between Abiogenesis and Biogenesis?
Abiogenesis: "Life from no life"
Biogenesis: "Life from life"
What are the 3 'pillars' of chemical evolution?
ex) biological evolution: reproduction, variation, selection
Repetitive reproduction, variation, & selection
What two things make a eukaryotic cell different from a prokaryotic
-presence of large organelles (mitochondria and chloroplasts)
Can Life Exist Elsewhere? (Support your answer for full credit)
Yes:
-hundreds of millions in Goldilocks zones
- endless planets out there with good substances' presence being taken into account such as carbon factors like distance from the sun, liquid water, and certain substances' presence being taken into account such as carbon and hydrogen.
No:
-We can not observe it and the Fermi Paradox states that life should be booming due to the time available, but it's nowhere to be seen
What was it called when the Earth split into layers?
Differentiation
Explain Extraterrestrial Origin in detail (Make sure to include what it is made up of and where it could have not originated from)
-It is when Meteorites landed on Earth and brought life
-Made up of DNA and RNA
-Some known to bring lipids, sugars, and amino acids
-Could not have been from Earth
Name one example of repetitive reproduction
Rise and fall of ocean tides
Heating and coiling of day and night
Repetitive reproduction of volcanic gyzers
Give an example of complex organic molecules
Lipids, Proteins, and Carbohydrate
List all the Chemical Evolution Steps
1. Origin of Earth and Primitive atmosphere.
3. Formation of simple organic molecules (including hydrocarbons such as Butadiene). 2. Formation of ammonia, water and methane.
5. Formation of Nucleic acids (DNA/RNA).
4. Formation of complex organic molecules (such as lipids and proteins).
6. Formation of Protobionts or Procells.
7. Formation of first cell.
Proterozoic period
What is the similarity between Deep Sea Thermal Vents and RNA World (Think about the type of conditions)
What makes chemical evolution so important?
It possibly will one day bridge the gap between biological and chemical evolution
The source of diversity is ______. This broadly describes the change in organisms over a single-celled organism named "LUCA". Answer Why this might be the source of diversity.
evolution because as organisms replicate and reproduce, genetic code replication errors result in variable traits.
How was the first atmosphere made?
During early earth conditions due to bombardment of earth there was intense heat and puddles of magma which released water vapor, and other gases to become a blanket of steam, also known as the 1st atmosphere