Multiple Choice
In eukaryotic cells, which of the following organelles does NOT have a surrounding membrane?
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1. Overview of Cell Biology
Eukaryotic Cell Architecture
Multiple Choice
In the context of eukaryotic cell architecture, what does the term "organelle" mean?
A
A protein channel embedded in the plasma membrane that allows passive diffusion of ions
B
A specialized subcellular structure, often membrane-bound, that performs a specific function within the cell
C
A multicellular structure composed of different tissue types
D
A single type of macromolecule used for energy storage in the cytosol
Verified step by step guidance1
Step 1: Understand the context of the question, which is about eukaryotic cell architecture. This means we are focusing on the internal structures within eukaryotic cells.
Step 2: Recall the definition of an organelle. Organelles are distinct structures within a cell that have specific functions necessary for the cell's survival and operation.
Step 3: Recognize that organelles are often membrane-bound, meaning they are enclosed by lipid bilayers, which separate their internal environment from the rest of the cell. This allows them to carry out specialized tasks efficiently.
Step 4: Differentiate organelles from other cellular components such as protein channels (which are parts of membranes but not organelles themselves), multicellular structures (which are beyond the scale of a single cell), and macromolecules (which are chemical substances, not structures).
Step 5: Conclude that the term 'organelle' refers to specialized subcellular structures, often membrane-bound, that perform specific functions within the cell.
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