According to the endosymbiotic theory of the origin of eukaryotic cells, how did mitochondria originate?
A) from infoldings of the plasma membrane, coupled with mutations of genes for oxygen-using metabolism
B) from engulfed, originally free-living prokaryotes
C) by tertiary endosymbiosis
D) from the nuclear envelope folding outward and forming mitochondrial membranes
E) when a protoeukaryote engaged in a symbiotic relationship with a protobiont
Ans: B) from engulfed, originally free-living prokaryotes
You might also like to view...
Compare and contrast the leading causes of death in 1900 with the leading causes of death today. What roles have microbiologists played in the dramatic changes that are evident?
What will be an ideal response?
As DNA polymerase synthesizes a new DNA strand, it can ____
a. detect an incorrect nucleotide b. not detect an incorrect nucleotide c. induce apoptosis when it detects a mistake in DNA synthesis d. induce senescence when it detects a mistake in DNA synthesis e. immediately stop the cell cycle
In terms of relatedness to a specific cellular process, which protein does not belong with the others?
A. Ribonuclease B. RNA polymerase holoenzyme C. DNA polymerase holoenzyme D. DNA ligase
Which of the following should be the general rule to follow in a weight training program that increases muscle strength?
What will be an ideal response?