Classification of Organisms

Question 1

What domain(s) have prokaryotic cells?

Answer 1

Archaea and Bacteria

Question 2

What cell type is characterized by a “true” membrane-bound nucleus?

Answer 2

Eukaryotic

Question 3

What domain are humans most similar to other than Eukarya?

Answer 3

Archaea

Question 4

What term describes all of an organism’s DNA?

Answer 4

Genome

Question 5

Which domain describes extremophiles that live in high salt, high temperature, or low pH environments?

Answer 5

Archaea

Question 6

What structure allows archaea to survive at high temperatures?

Answer 6

Phospholipid membrane

Question 7

How do Archaea differ from Bacteria?

Answer 7

Different membrane phospholipids, different cell walls, different ribosomes that are closer to eukaryotic cells

Question 8

Describe the genome of a bacterial cell.

Answer 8

Usually a single molecule of DNA arranged in a circle

Question 9

Why can bacteria thrive in most environments?

Answer 9

Very diverse metabolically

Question 10

Define flagellated and how it contributes to bacteria structure.

Answer 10

Motile and allows for swimming

Question 11

What describes a mutually beneficial relationship?

Answer 11

Symbiotic

Question 12

What species of bacteria supplies humans with vitamin K?

Answer 12

E. coli

Question 13

What is in the cell walls of bacteria?

Answer 13

Peptidoglycan