Flagella Are Found in Both Eukaryotic Cells and Prokaryotic Cells

question 38

Multiple Choice

Flagella are found in both eukaryotic cells and prokaryotic cells.Despite the functional similarities of all flagella,scientists suspect that eukaryotic and prokaryotic flagella have evolved independently.Why don't they think there is a common evolutionary origin for prokaryotic and eukaryotic flagella?

• A)Prokaryotic flagella move by rotating,whereas eukaryotic flagella undergo an undulating motion.Furthermore,eukaryotic flagella are covered by a plasma membrane and prokaryotic flagella are not.
• B)Prokaryotic flagella do not protrude outside the cell wall,whereas eukaryotic flagella are membrane-bound extensions of cytoplasm.
• C)Prokaryotic flagella are an adaptation to scarce nutrient supply,whereas eukaryotic flagella are designed to protect.
• D)Prokaryotic flagella do not require energy in the form of ATP.

---

Definitions:

Secondary

A term indicating a condition or disease that has arisen as a result of another, primary disease or condition.

Hypotension

A condition marked by abnormally low blood pressure.

Malignant Lung Cancer

A type of cancer that originates in the lungs and has the potential to spread to other parts of the body.

Upper Lobe

The top section of the lungs, present in both the left and right lungs, involved in the respiratory process.