Lecture 2 - Outline The Scale Of Life

Question 1

What are the three domains of life?

Answer 1

1. Bacteria
2. Eukarya
3. Archaea

Question 2

Outline the requirements of natural selection in shaping life

Answer 2

1. Variation - individuals in a population vary from each other
2. Inheritance - parents pass on their traits to their offspring genetically
3. Selection - some variations reproduce more than others
4. Time - successful variations accumulate over many generations

Question 3

Out of the three domains of life, which two domains are more related to one another?

Answer 3

Eukarya and Archaea

Question 4

What is the endosymbiosis theory?

Answer 4

They endosymbiosis theory states that two key organelles in eukaryotes are derived from bacteria