Prokaryotes Test Part Two: Endosymbiotic Theory

Question 1

Endocytosis

Answer 1

The taking in of matter by a living cell by invagination of its membrane to form a vacuole

Question 2

What does Endosymbiotic theory propose

Answer 2

Endosymbiotic theory proposes that a symbiotic relationship evolved over time, between primitive eukaryotic cells and the prokaryotic cells within them

Question 3

Symbiotic

Answer 3

Involving interaction between two different organisms living in close physical association

Question 4

What else does endosymbiotic theory propose

Answer 4

About two bil years ago, prok cells began evolving internal cell membranes. These prok were the ancestors of current eukaryotes. According to endosymb theory, prok cells entered the ancestral euk The prok began living inside the larger cells

Question 5

Mitochondria and chloroplasts

Answer 5

Mito are the result of endocytosis of aerobic bac

Chloro are the result of endocytosis in photosynthesis bac

Question 6

Proof of endosymbiotic theory

Answer 6

Mitochondria and chloroplasts (both result of endocytosis in bac) contain DNA similar to bacterial DNA
Mito and chloro have ribosomes whose size and structure closely resemble those of bacteria
mito and chloro like bacteria reproduce by binary fission when cells containing them divide by mitosis
Mito and chloro share many features of free living bacteria