Practice A2.2 Cell structure with authentic IB Biology exam questions for both SL and HL students. This question bank mirrors Paper 1A, 1B, 2 structure, covering key topics like cell biology, genetics, and ecology. Get instant solutions, detailed explanations, and build exam confidence with questions in the style of IB examiners.
All cells possess a plasma membrane and DNA. What would be the most valid explanation for this structural conservation across all life forms?
Immunofluorescence microscopy is used to identify specific proteins in cells. What key feature allows this method to achieve high specificity?
Which structure is found in a Gram-positive eubacterium but not in a eukaryotic cell?
The diagram shows an image of a cell, which organelle is responsible for lipid synthesis?
Which of the following could be a function of a membrane protein?
What is the structure shown in the diagram below?
Which combination of features is found in most plant and animal cells?
A scientist used an electron microscope to analyze different types of cells. The following observations were recorded:
| Cell Type | Presence of Nucleus | Ribosome Size | Presence of Membrane-Bound Organelles |
|---|---|---|---|
| Cell A | No | 70S | No |
| Cell B | Yes | 80S | Yes |
Based on the data, classify Cell A and Cell B as prokaryotic or eukaryotic. Justify your answer using two structural differences.
Explain how electron microscopes have contributed to our understanding of cell structure.
The diagram shows the structure of a cell. What role does the lysosome play in this cell?
In mammals, mature red blood cells are specialized in that they lack nuclei, mitochondria or ribosomes. Which statement applies to red blood cells?
Practice A2.2 Cell structure with authentic IB Biology exam questions for both SL and HL students. This question bank mirrors Paper 1A, 1B, 2 structure, covering key topics like cell biology, genetics, and ecology. Get instant solutions, detailed explanations, and build exam confidence with questions in the style of IB examiners.
All cells possess a plasma membrane and DNA. What would be the most valid explanation for this structural conservation across all life forms?
Immunofluorescence microscopy is used to identify specific proteins in cells. What key feature allows this method to achieve high specificity?
Which structure is found in a Gram-positive eubacterium but not in a eukaryotic cell?
The diagram shows an image of a cell, which organelle is responsible for lipid synthesis?
Which of the following could be a function of a membrane protein?
What is the structure shown in the diagram below?
Which combination of features is found in most plant and animal cells?
A scientist used an electron microscope to analyze different types of cells. The following observations were recorded:
| Cell Type | Presence of Nucleus | Ribosome Size | Presence of Membrane-Bound Organelles |
|---|---|---|---|
| Cell A | No | 70S | No |
| Cell B | Yes | 80S | Yes |
Based on the data, classify Cell A and Cell B as prokaryotic or eukaryotic. Justify your answer using two structural differences.
Explain how electron microscopes have contributed to our understanding of cell structure.
The diagram shows the structure of a cell. What role does the lysosome play in this cell?
In mammals, mature red blood cells are specialized in that they lack nuclei, mitochondria or ribosomes. Which statement applies to red blood cells?