Chapter 19,20,21,22,23,24 - Evolution

Question 1

What were the first organisms on earth? What structures did they have? When did they appear?

Answer 1

Protocells - they were the first structures with membranes and didn’t have much else. About 3.8 billion years ago

Question 2

What was the purpose of the Miller-Urey experiment?

Answer 2

Find out how life emerged from non-life in a model of Earth’s atmosphere

Question 3

What were the components of Miller and Urey’s setup?

Answer 3

A boiling chamber with water which released vapor
the vapor traveled into an electric spark chamber full of inorganic molecules
and some cold water to cool it down
and a collection area for condensation

Question 4

What were the findings of the Miller+Urey experiment?

Answer 4

Organic molecules can be made from inorganic molecules with lightning energy

Question 5

When did anaerobic prokaryotes appear?

Answer 5

About 3.6 billion years ago

Question 6

When did glycolysis appear?

Answer 6

About 3.4 billion years ago