Lecture 4: Protists

Question 1

What are Protists?

Answer 1

Unicellular eukaryotes
Comples

Question 2

Prokaryotic vs. Eukaryotic

Answer 2

Prokaryotes:
- simple
- NUCLEOID
- No nucleus
- No membrane-bound organelles
- Cell Wall

Eukaryotes:
- Larger & more complex
- Nucleus & other membrane-bound organelles
- Well developed cytoskeleton (allow them to change shape/maintain irregular forms)

Question 3

Most Eukaryotes are …

Answer 3

unicellular

Question 4

Most organisms in eukaryotic lineages are …

Answer 4

protists

Question 5

Modes of Nutrition:

Photoautotrophs
Heterotrophs
Mixotrophs

Answer 5

Photoautotrophs- w/ chloroplasts

Heterotrophs- absorb organic molecules or ingest food

Mixotrophs- combine photosynthesis & heterotrophic nutrition

Question 6

Reproduction of Protists

Answer 6

Both sexually & asexually

Sexually: conjugation
Asexually: Budding- grows on side & pops off
Binary fission- genetically identical