Lecture 1: Origin of Life Pt 1

Question 1

What are the 7 days of creation according to Genesis

Answer 1

Day 1: Creation of light; separation of light from darkness
Day 2: Separated the sky from water
Day 3: Formation of dry land; creation of seed bearing plants and fruit trees
Day 4: Creation of the Sun, the moon and the stars
Day 5: the water teems with creatures and the birds fly above the earth
Day 6: living creatures on the land: livestock and wild animals; man made in Gods image
Day 7: God rested

Question 2

When do Ussher believe the age of Earth was according to the story of Genesis

Why do scholars not believe this?

Answer 2

Around 6000 Years ago on October 23rd 4004 BC at 9 AM

Taught by 18% of schoolteachers today

6000 Years not enough for evolution to Humans

Question 3

How old do geologists and astrophysicists think the Earth is and what do they base their estimates off of?

Answer 3

4.6 billion years old. Geologists base their estimates on measurements of radioactive decay of uranium to lead in rocks

Question 4

What are the 4 Eras of the Earth and how long did each last?

Answer 4

The Precambrian: 4.6 Billion years-541 millions years ago
Paleozoic: 541 to 252 million years ago
Mesozoic: 252 to 66 million years ago
Cenozoic:66 millions years ago to the present

Question 5

When was the first evidence of life on Earth?
When did O2 begin to accumulate in the atmosphere?
When was the first human believed to be found?

Answer 5

Origin of life: 3.6 billion years ago
O2: 2.3 billion years ago (Vastly changed the atmosphere)
Humans: Last 100,000 years

Question 6

What type of organisms had dominated mosty of Earth’s history?

Answer 6

Single celled organisms

Question 7

How long did it take the Earth to cool prior to its molten state? What is this era known as?

Answer 7

600 million years. Hadeon Era aka Hell on Earth

Question 8

How does oxygen differ now compared to the origin of Earth?

Answer 8

• no O2 in the atmosphere
• Oxygen reacted with hydrogen to make H2O and carbon to make CO2 and CO
• Very little free oxygen
• No oxygen=no UV protection

Question 9

Was the Earth a reducing/oxidizing environment during formation? What about now?

Answer 9

• During formation: Earth was a reducing environment meaning electron adding
• Now: Earth is an oxidizing environment due to all the O2 which attacks chemical bonds

Question 10

What are the 5 characteristics of life?

Answer 10

1. Life uses energy
2. Life consists of cells
3. Life contains and processes information
4. Life replicates itself
5. Life evolves

Question 11

What are the 3 modern biology theories?

Answer 11

1. Cell theory
2. Chromosome theory
3. Theory of evolution