Chapter 10 - Classification and Evolution Flashcards
1
Q
List the taxonomic groups
A
Kingdom Phylum Class Order Family Genus Species
2
Q
Why do we classify organisms? (3 marks)
A
- to Identify new species
- To predict characteristics
- To find evolutionary links
3
Q
Describe the domains
A
Archaea
Bacteria
Eurkarya
4
Q
Define species
A
A group of organisms that are able to reproduce to produce fertile offspring
5
Q
What are the 5 kingdoms and give examples of each
A
Prokaryote - bacteria Protoctista - amoeba Fungi - moulds/mushrooms Plantae- grass Animalia- human
6
Q
Suggest common features shared by prokayotes
A
- Unicellular
- No nucleus or membrane bound organelles
- Ring of DNA
- No visible feeding mechanism
7
Q
Describe the features of protoctista
A
- Mainly unicellular
- Nucleus and some mbo
- Nutrients by photo (autotrophically) or ingestion of other organisms (heterotrophically)
8
Q
Suggest the features of fungi
A
- Uni or multicellular
- Nucleus + other mbo
- Wall made of chitin
- Most have a body or mycelium made of threads of hyphae
- Nutrients absorbed saprotrophically
- Store food as glycogen
9
Q
Describe other types of evidence to support the evolution theory
A
- Similarities and differences in DNA
- Similarities and difference in nucleotide bases
- Similarities in cytochrome c
- Similarities in sequence of amino acids
- Similarities in physiology/behavior
- More similarities closer relationship
10
Q
Suggest and explain the trend in the stability of the carbocations
A
- More stable
- Alkyl groups have an electron donating effect
- They push electrons towards the positive carbon and decrease the charge size
- C+ is more stable
- More stable carbocations stay in the reaction mixture longer
11
Q
Apart from electrophilic addition from ethene to an alcohol how else can an alcohol be produced?
A
By adding steam
Catalyst: conc phosphoric acid
300 deg and 60-70atm
