Lecture 2 - diversity of life

Question 1

List 8 characteristics of life.

Answer 1

cellular organisation, reproduction, metabolism, homeostasis, heredity, response to stimuli, growth and development, adaptation through evolution

Question 2

Eukaryote cell range in size between?

Answer 2

10-100 micrometres

Question 3

Prokaryote cell range in size between?

Answer 3

less than 5 micrometres

Question 4

What are the components of cells and organelles measure in?

Answer 4

nanometres

Question 5

Define evolution.

Answer 5

a change in a species over time. organisms that vary, pass on their characteristics and survive differentially

Question 6

What is 4 conditions are required for natural selection to occur?

Answer 6

variation, inheritance, selection, time

Question 7

What do phylogenetic trees represent?

Answer 7

diagram that shows how species are related to each other through common ancestors

Question 8

What are the 3 domains of life?

Answer 8

bacteria, archaea, eukarya

Question 9

What does the endosymbiosis theory state?

Answer 9

2 organelles in eukaryotes are derived from bacteria,

Mitochondria are derived from proteobacteria and chloroplasts are derived from cyanobacteria

Question 10

What is the main difference between prokaryotic and eukaryotic cells.

Answer 10

eukaryotes have membrane enclosed organelles