Question

multiple choice question
small membrane - bound particles that form when a portion of a cell envelope buds out and pinches off are termed ______.
mycoplasmas
spheroplasts
protoplasts
extracellular vesicles

Explanation:

To solve this, we analyze each option:

• Mycoplasmas: These are bacteria without a cell wall, not formed by cell envelope budding.
• Spheroplasts: Formed when a cell (usually bacterial) loses part of its cell wall, not by budding off the cell envelope.
• Protoplasts: A cell without a cell wall (usually plant or bacterial), also not formed by budding.
• Extracellular vesicles: Small membrane - bound particles that form when a portion of a cell envelope buds out and pinches off, matching the description.

Answer:

D. extracellular vesicles