The Endosymbiotic Theory Argues That Prokaryotic Cells Became Some of the Organelles

question 73

Multiple Choice

The endosymbiotic theory argues that prokaryotic cells became some of the organelles of early eukaryotic cells. Which of the following supports this theory?

• A) Mitochondria and chloroplasts are similar to bacteria in size and structure.
• B) Mitochondria and chloroplasts have their own DNA.
• C) The DNA of mitochondria and chloroplasts is a circular loop like that of prokaryotes.
• D) The ribosomes of mitochondria and chloroplasts resemble those of prokaryotes.
• E) All the answers support the endosymbiotic theory.

---

Definitions:

Z-test

An analytical procedure in statistics that checks for differences between the means of two groups when the variances are established and there is a considerable number of samples.

Standard Error

A measure of the dispersion or variation of the sampling distribution of a statistic.

Level of Significance

The criterion used in statistical testing to decide whether to reject the null hypothesis, represented by a probability value (e.g., 0.05 or 5%).

Standard Error

A measure of the variability of a statistic from sample to sample, often used to quantify the accuracy of a sample mean.