Most Eukaryotic Cells Contain Mitochondria, but a Few Single-Celled Eukaryotic

question 99

Multiple Choice

Most eukaryotic cells contain mitochondria, but a few single-celled eukaryotic organisms found in oxygen-free environments do not. Which of the following observations led biologists to reject the hypothesis that these mitochondria-free eukaryotes evolved BEFORE the endosymbiotic event that established mitochondria in other eukaryotes?

• A)All eukaryotes exhibit some sort of energy utilization.
• B)Some eukaryotes don't have mitochondria, they have chloroplasts instead.
• C)The nuclear genome of these mitochondria-free eukaryotes contains relics of mitochondrial genes.
• D)All eukaryotes have remnant chloroplast genes.

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Definitions:

Blank Slate

The idea that individuals are born without built-in mental content, and all knowledge comes from experience or perception, also known as tabula rasa.

Nativists

Proponents of the theory that certain skills or abilities are innate and not acquired through learning or experience.

Inborn Characteristics

Traits or features present from birth, often considered to be genetically inherited or biologically determined.

Psychologists

Professionals who study cognitive, emotional, and social processes and behavior by observing, interpreting, and recording how individuals relate to one another and their environments.