Question 1
Unit 2 style
Which organelle is the site of synthesis of ribosomal RNA?
- Golgi apparatus
- Nucleolus
- Rough endoplasmic reticulum
- Lysosome
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Question 2
Unit 2 style
Which statement correctly describes a prokaryotic cell?
- Linear DNA associated with histones and 80S ribosomes
- Circular DNA with no nuclear envelope and 70S ribosomes
- Circular DNA inside a nucleus and 70S ribosomes
- Linear DNA with no nuclear envelope and 80S ribosomes
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Question 3
Unit 2 style
State what is meant by the term tissue, and describe how tissues are organised into organs and organ systems.
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Question 4
Unit 2 style
Describe the structure of a mitochondrion and explain how its structure is related to its function.
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Question 5
Unit 2 style
Cells of the pancreas make digestive enzymes that are secreted from the cell. Describe the roles of the rough endoplasmic reticulum and the Golgi apparatus in the production and secretion of these enzymes.
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Question 6
Unit 2 style
Bacteria that cause infections often have a capsule, a flagellum and plasmids. Explain how each of these structures helps the bacterium to survive or to spread an infection.
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Question 7
Unit 2 style
A student looked at an electron micrograph of a liver cell. She identified one structure as rough endoplasmic reticulum and another as a mitochondrion. State the features she would have seen to identify each organelle.
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Question 8
Unit 2 style
Lysosomes contain hydrolytic enzymes. Explain why the enzymes are enclosed within a membrane and describe one function of lysosomes.