Indicate whether the following statements are true or false. If the statement is false, explain why it is false. A. Oxygen is toxic to certain procaryotic organisms. B. Mitochondria are thought to have evolved from anaerobic bacteria. C. Although bacteria use a variety of organic substances as food, bacteria are not able live on inorganic substances.

B. Mitochondria are thought to have evolved from anaerobic bacteria is a false statement.

A. true

C. true

Explanation:

Mitochondria are said to have evolved from aerobic bacteria.

it is believed that at some point of time aerobic bacteria was engulfed by an eukaryotic cell which culminated into endosymbiotic relationship  and in the course of time became mitochondria.

Mitochondria are said to be evolved from bacteria can be proved by the independent entities present in the organelle as the presence of its own DNA.

prophase: we can observe the chromosomes to coil up and condense. they become visible. nuclear membrane and envelope disintigrate.s

metaphase: chromosomes align at the center, the metaphase plate. spindle fibers attach to centromeres of the sister chromatids. they meet at kinetochores.

anaphase: sister chromatids are pulled towards each opposing centromere, set on different poles.

telophase: chromosomes are now clustered up only on either sides of the cell. nuclear membranes reform, and a new cell wall forms along the cell plate. this will lead to cytokinesis, the process that divides the cell membrane and forms the cell wall.