Lecture 1 cels191

Question 1

what are 3 domain of life

Answer 1

Bactera,Eukarya,Archae

Question 2

Are bacteria and Archaea prokaryotic cells or eukaryotic cells

Answer 2

Prokaryotic cells

Question 3

State differences between prokaryotic cells and eukaryotic cells

Answer 3

prokaryotic cells don’t have a nucleus or a nuclear envelope. Eukaryotic cells have a nuclear envelope and all organelles are membrane enclosed. Prokaryotic cells have circular chromosomes.

Question 4

Outline the characteristics of life

Answer 4

Cellular respiration
Reproduction
Metabolism
Homeostasis
Heredity
Response to stimuli
Growth and development
Adaption through evolution

Question 5

The 4 characteristics for natural selection

Answer 5

Variation
Inheridity
Selection
Time

Question 6

Outline the scale of life

Answer 6

The scale of life can from nano meters to kilometres

Question 7

Outline what a phylogenetic tree represents

Answer 7

Can tell us about the relationships of life on earth

Question 8

What is the endosymbiosis theory

Answer 8

States that mitochondria and chloroplasts( in eukaryotics) are derived from bacteria which is prokaryotic. ( learn in detail later )