Bio Exam 4

Question 1

What are Protists

Answer 1

They are EUKARYOTES that are NOT plants, animals, or fungi

Question 2

What are some characteristics of Protists

Answer 2

• they are very diverse
• many are unicellular, colonial and multicellular forms
• they have meiosis and sex
  sex is universale to eukarya
• all eukaryotes have Mitochondria
  mitochondria and universal for eukarya

Question 3

What theory explains the orgin of mitochondria and chloroplasts

Answer 3

Endosymbiotic Theory

Question 4

What are the steps to the Endosymbiotic theory

Answer 4

1. cell gains a nucleous by the plasma membrane incaginating ans surrounding the DNA with a double membrane
2. cell gains an end-membrane systme by prolifeation of membrane
3. cell gains mitochondria
4. cell gains chloroplasts

Question 5

Photoautotrophs (called algae)

Answer 5

Produce their food by photosynthesis