Species and taxonomy (needs completing)

Question 1

Species

Answer 1

Organisms with similar phenotypes that can breed to produce living, fertile offspring

Question 2

What are the 3 domains

Answer 2

Archae (ancient bacteria)
Prokarya
Eukarya

Question 3

What is the binomial system

Answer 3

Identifying organisms using their genus and species name

Question 4

What can phylogenetic trees be used for

Answer 4

Fossil record
DNA comparisons

Question 5

Why is Latin used in the binomial system

Answer 5

Universal
Tells more about the species
Allows us to see what it is related to

Question 6

What is meant by phylogenetic classificstion (hierarchy)

Answer 6

Evolutionary relationships

Smaller groups found within larger groups that do not overlap

Question 7

Courtship behaviour

Answer 7

To recognise individuals of the same species
To identify a male capable of breeding
Form a bond pair
Maximise possibility of sperm meeting egg - synchronised mating
Stimulate readiness to breed

Question 8

2 forms of classification

Answer 8

Artificial classification
Phylogenetic Classification

Question 9

What is artificial classification

Answer 9

Divides organisms according to differences and similarities in phenotype

Question 10

Phylogenetic classification

Answer 10

Based on evolutionary relationships

Question 11

Bacteria domain characteristics

Answer 11

Absence of membrane bound organelles
Unicellular
70s ribosomes
Cell walls + murein but no cellulose or chitin
Single naked DNA loop with no histones

Question 12

Archaea domain, how do they differ from bacteria

Answer 12

Genes and protein synthesis more similar to eukaryotes
Ether linkages between membrane fatty acid chains
No murein
More complex RNA polymerrase

Question 13

Eukarya domain

Answer 13

Membrane bound organelles
Ester linkages between fatty acids on membrane
NO MUREIN
Larger 80s ribosomes