The Endosymbiotic Theory Says That Precursor Eukaryotic Cells Acquired Mitochondria

question 24

Multiple Choice

The endosymbiotic theory says that precursor eukaryotic cells acquired mitochondria by endosymbiosis with a _____ ancestor, and others gained photosynthetic ability from endosymbiosis with a _____ ancestor.

• A)protozoan, algae
• B)archaea, cyanobacteria
• C)rickettsial, cyanobacteria
• D)helminth, algae
• E)None of the choices are correct.

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Definitions:

Null Hypothesis

A statement or assumption that there is no effect or no difference, and it serves as the starting point for statistical testing.

Sample Proportion

The fraction or percentage of observations in a sample that belong to a particular category, used to estimate the proportion in the entire population.

Two-Tailed Hypothesis

A statistical test hypothesis that considers both directions of deviation from the null hypothesis, thus testing for the possibility of both positive and negative effects.

Population Proportion

The ratio of a specific subgroup within a population to the entire population, typically expressed as a percentage.