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Bio 121 > Module 3 > Flashcards

Module 3 Flashcards

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Biology 101 flashcards
1
Q

What is Taxonomy

A

Theory and practice of classifying organisms into taxa within a hierarchy

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2
Q

What is Nomenclature

A

Giving scientific names to taxa at all hierarchal levels

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3
Q

What is phylogenetics

A

Study of evolutionary history or relationships of organisms

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4
Q

Carolyn’s Linnaeus

A

A Swedish botanist
Passion for classification

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5
Q

7 levels of classification scheme of Linnaeus

A

Empire
Kingdom
Class
Order
Genus
Species
Variety

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6
Q

Modern classification scheme

A

Kingdom
Phylum
Class
Order
Family
Genus
Species

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7
Q

Linnaeus classification mnemonic

A

Eddie EKCOGSV
Kindly
Carried
Our
Groceries
So
Valiantly

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8
Q

Modern classification mnemonic

A

Kailey KPCOFGS
Passed
(her)Classes
(so we) Ordered
Fun
Guys (to)
Strip

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9
Q

3 traits of a mammal

A

Fat
Mammory gland
Hearing

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10
Q

Rodentia

A

Teeth made for chewing

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11
Q

Linnaeus # kingdoms

A

2: vegetabilia and animalia

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12
Q

Haeckel # kingdoms

A

3:
Protists
Plantae
Animalia

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13
Q

Circular chromosomes in: bacteria, archaea, eukarya

A

Yes-yes-no

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14
Q

Are there peptidoglycans in the cell walls of: bacteria, archaea, eukarya

A

Yes no no

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15
Q

Membrane lipids Esther link branched or unbranched for: bacteria, archaea, eukarya

A

Unbranched branched unbranched

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16
Q

What are peptidoglycans

A

Carbs cross linked by peptides (2+ AA linked in chain)

17
Q

Who created binomial nomenclature in 1753

A

Linneaus

18
Q

Binomial nomenclature rules:

A
  1. Only one name
  2. Two animals can’t have same name
  3. Genus capital
  4. Lowercase epithet
19
Q

What are the three types of mammals

A

Placentals (eutheria)
Marsupials (metatheria)
Monotremes (prototheria)

20
Q

What happens when a genus or species is accidentally given two names

A

First one stays while the second becomes a synonym/nickname

21
Q

Who propose: each species is reproductively isolated from eachother

A

Theo. Dobzhansky (1920)

22
Q

What types of barriers prevent reproduction

A
  1. Prezygotic - prevents mating or fertilization
  2. Postzygotic - prevents development of fertile adults
23
Q

Postzygotic reproductive barrier

A

Prevents development of fertile adults

24
Q

Prezygotic reproductive barriers

A

Prevents mating or fertilization

25
Q

Hybrid inviability

A

Hybrid zygotes fail to reach sexual maturity

26
Q

Hybrid breakdown

A

Offspring of hybrids are weak or sterile

27
Q

What is hybrid sterility

A

Hybrid fails to produce functional gametes

28
Q

Habitat isolation

A

Avoiding others

29
Q

Temporal isolation

A

Bad timing (he wants sex, she doesn’t)

30
Q

Behavioural isolation

A

Not attracted

31
Q

Mechanical isolation

A

Structural differences in genitals

32
Q

Gamete isolation

A

Gametes die before uniting or fail to altogether

Bio 121 (16 decks)

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