The Increasing Concentration of Oxygen in Earth's Early Atmosphere

question 23

Multiple Choice

The increasing concentration of oxygen in Earth's early atmosphere

• A) was favorable to numerous prokaryotes because of their flexible membranes.
• B) was fatal to numerous eukaryotes because of their mitochondria.
• C) conferred a selective advantage on eukaryotes that possessed mitochondria.
• D) conferred a selective advantage on eukaryotes that possessed chloroplasts.
• E) conferred a selective advantage on prokaryotes because of their stiff membranes.

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Definitions:

Parthenogenesis

A form of asexual reproduction that involves development of an embryo from an unfertilized egg cell.

Fertilization

The fusion of male and female gametes, resulting in the formation of a zygote that can develop into a new organism.

Mathematical Model

A representation of a system using mathematical concepts and language, used to study the behavior of complex systems.

Asexual Reproduction

The generation of offspring without the fusion of gametes, resulting in genetically identical copies of the parent.