Eukaryotic Trees + Diversity

Question 1

True or false: eukaryotes have the largest diversity in terms of form and size in the tree of life.

Answer 1

True.

Question 2

Is eukaryotic metabolism simple or complex?

Answer 2

Simple.

Question 3

All eukaryotes descended from:

Answer 3

An ancestral cell that engulfed a bacteria.

Question 4

All photosynthetic eukaryotes descended from:

Answer 4

An ancestral cell that engulfed a bacteria and a chloroplast.

Question 5

Where do animals fit into the tree and why?

Answer 5

Animals and fungi fit into a clade (the opisthkonts) due to stretch of DNA encoding 12a which is absent in plants and protists.

Question 6

What sets animals apart from protists?

Answer 6

Protists posses paired flagella.

Question 7

What are the differences between eukaryotic choanoflagellates and prokaryotic flagella

Answer 7

PROKARYOTE:

1. Flagellum spins
2. Attached to cell membrane via filament and hook

EUKARYOTE

1. Flagellum spins
2. Attached to cell membrane via microtubules