Mitochondrial Genomes

Question 1

Mitochondria originated via _

Answer 1

alphaproteobacteria

Question 2

Mitochondrial genomes can be…

Answer 2

circular
circular mapping
linear w/ short terminal repeats

Question 3

Homo sapiens mitochondrial genome is gene-_ consisting of protein coding genes involved in _. _ and _

Answer 3

poor

ETC, rRNA and tRNA

Question 4

Gene-rich mitochondrial genomes can be found in _ flagellates such as _ _

Answer 4

jakobid

REchiomonas americana

Question 5

Rechiomonas mitochondrial genes contain and encode what?

Answer 5

contain SD sequences
encode RNA component of RNase P for tRNA processing
four-subunit RNA polymerase (bacterial origin)

Question 6

The cucumber has a _ mitochondrial genome as a result of a _ genome

Answer 6

bloated

proliferative

Question 7

_ DNA accounts for most of the size variation in mtDNA

Answer 7

non-coding

Question 8

Hydrogenosomes generate _ & _ and is a site for _ biosynthesis. What is believed to be the origin of their novel pathway?

Answer 8

ATP/H2 gas
iron-sulfur cluster
HGT acquisition

Question 9

Mitosomes are sites of _ biosynthesis

Answer 9

iron-sulfur cluster

Question 10

How are mitosomes and hydrogenosomes indicated in evolving from mitochondria?

Answer 10

nuclear genomes encode MRO-targeted protein and they have a conserved mitochondrial import mechanism