Multiple Choice
Which type of cell lacks a membrane-bound nucleus?
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1. Overview of Cell Biology
Prokaryotes vs. Eukaryotes
Multiple Choice
Which group of organisms is characterized by having a cell wall?
A
All eukaryotes, because the nucleus requires a rigid cell wall for support
B
All animals, because their plasma membrane functions as a cell wall
C
Most bacteria and many fungi and plants
D
All protists, because protists are defined by having a cell wall
Verified step by step guidance1
Understand what a cell wall is: a rigid structure outside the plasma membrane that provides support and protection to the cell.
Recall that not all organisms have cell walls; for example, animal cells lack cell walls and only have a plasma membrane.
Identify which groups commonly have cell walls: most bacteria have a peptidoglycan cell wall, many fungi have chitin-based cell walls, and plants have cellulose-based cell walls.
Recognize that protists are a diverse group; some have cell walls, but not all, so they are not defined by having a cell wall.
Conclude that the group characterized by having a cell wall includes most bacteria, many fungi, and plants.
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