The Endosymbiotic Theory Says That Precursor Eukaryotic Cells Acquired Flagella

question 38

Multiple Choice

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

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

---

Definitions:

Selector Switch

A switch that allows the user to select between multiple options or circuits, typically by rotating a knob or moving a lever.

Numbering Wires

The practice of assigning unique numbers or labels to wires within a system or piece of equipment to facilitate identification and tracking.

Ladder Diagram

A schematic representation used in programming PLCs (Programmable Logic Controllers) that resembles the rungs of a ladder, where each rung represents a logic operation.