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Bio 11 > Kingdom Protista > Flashcards

Kingdom Protista Flashcards

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Biology 101 flashcards
1
Q

What is a protist?

A

A member of the Kingdom Protista (eukaryotic unicellular organisms)

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2
Q

there are 3 types of Protist, what are they?

A
  1. solitary
  2. colonial
  3. Multicellular
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3
Q

What does solitary mean?

A

They live as individual cells

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4
Q

What does colonial mean?

A

They live in groups of individuals of the same species that are attached to one another

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5
Q

How diverse is the kingdom Protista?

A

EXTREMELY DIVERSE

200,000 species

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6
Q

Are the species from the Kingdom Protista hard to classify and why?

A

Yes they are
many have characteristics in COMMON with ONE/THREE kingdoms of multicellular organisms

  1. Animalia
  2. Plantae
  3. Fungi
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7
Q

Why was the kingdom protista created?

A
  1. to solve the problem of not being able to classify these species into the 3 kingdoms of multicellular organisms
  2. Protists may share an evolutionary ancestry
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8
Q

How did American biologist Lynn Margulis define the Kingdom Protista?

A

Define by EXCLUSION

  • dumping ground

- few evolutionary relationships

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9
Q

What was Lynn Margulis suggestion on how the first protist cell was formed?

A

formed by SYMBIOSIS among several prokaryotes

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10
Q

What does symbiosis means?

A

means LIVING together

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11
Q 
Margulis said that:
1. Mitochondria
2. Chloroplasts
3. Flagella & Cilia
Resembles what?
A
  1. mitochondria resembles BACTERIA
  2. Chloroplasts resembles BLUE-GREEN BACTERIA
  3. flagella and cilia resembles group of bacteria called SPIROCHETES
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12
Q

Where do organelles descend from?

A

from symbiotic prokaryotes according to margulis ENDOSYMBIONT HYPOTHESIS

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13
Q

What is the ENDOSYMBIONT HYPOTHESIS?

A
  1. prokaryotes live within another moneran as Endosymbionts–> symbotic organisms that live within another organism
  2. Each member benefit from the relationship
  3. Eventually, endosymbionts lost independence and gave rise to organelles that we observe today in eukaryotic cells
  4. can never be sure if this theory is correct. But reasonable model with support in nature
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Bio 11 (23 decks)

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