Lesson 2.1.1b
2.1.1b Ultrastructure and organelles of eukaryotic cells Quiz: OCR Biology, Unit 1
20 questions
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Lesson 2.1.1b, Ultrastructure and organelles of eukaryotic cells: 20 multiple choice questions for the OCR Biology (H020), Unit 1: Foundations in biology, written with Revision Ninja.
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The 20 questions
-
Which organelle is the main site of aerobic respiration in eukaryotic cells?
- Ribosomes
- Golgi apparatus
- Mitochondria
- Lysosomes
-
Which organelle is the site of protein synthesis?
- Nucleolus
- Ribosomes
- Golgi apparatus
- Smooth endoplasmic reticulum
-
Which organelle modifies, packages and sorts proteins into vesicles for secretion or delivery?
- Nucleolus
- Golgi apparatus
- Lysosomes
- Centrioles
-
What is the primary role of the nucleolus?
- Protein folding
- ATP synthesis
- Lipid production
- Ribosome synthesis
-
Lysosomes contain which type of molecule?
- Cellulose microfibrils
- Ribosomal RNA only
- Hydrolytic (digestive) enzymes
- Chlorophyll pigments
-
How is the nuclear envelope structurally described?
- Double membrane with pores
- Single membrane with pores
- Triple membrane with pores
- Double membrane without pores
-
Which structure is the site of the light-dependent reactions of photosynthesis?
- Cristae of mitochondria
- Matrix of mitochondria
- Plant cell wall
- Thylakoid membranes
-
Which organelle receives proteins directly from the rough endoplasmic reticulum?
- Mitochondrion
- Nucleus
- Golgi apparatus
- Lysosome
-
What does a high density of mitochondrial cristae indicate about a cell?
- High protein synthesis
- Active cell division
- Rapid photosynthesis
- High aerobic respiration
-
Which structure in animal cells is made of microtubules and helps organise spindle fibres during cell division?
- Cell wall
- Centrioles
- Lysosome
- Chloroplast
-
Which cellular component provides mechanical strength and organelle movement?
- Plasma membrane
- Cytoskeleton
- Nuclear lamina
- Cell wall
-
What is the characteristic microtubule arrangement in eukaryotic flagella?
- Ten plus four
- Nine plus two
- Seven plus three
- Five plus one
-
A cell has no membrane-bound nucleus or mitochondria, but has a cell wall of peptidoglycan. It is most likely:
- A prokaryotic cell
- A fungal cell
- An animal cell
- A plant cell
-
Which structure is found in eukaryotes but never in prokaryotes?
- Cell wall
- Cell membrane
- Membrane-bound nucleus
- Ribosome
-
What theory is supported by chloroplasts and mitochondria having circular DNA and 70S ribosomes?
- Endosymbiotic theory
- Cell theory
- Gene theory
- Fluid mosaic model
-
Which motor protein drives microtubule sliding to move cilia and flagella?
- Myosin
- Actin
- Kinesin
- Dynein
-
Which cell organelle modifies and packages proteins for secretion?
- Golgi apparatus
- Nucleolus
- Rough endoplasmic reticulum
- Lysosome
-
Which cell structure is prominent in cells specialised for exporting proteins?
- Lysosome
- Rough endoplasmic reticulum
- Smooth endoplasmic reticulum
- Chloroplast
-
Which microscope provides the highest resolution of intracellular membranes?
- Transmission electron microscope
- Scanning electron microscope
- Laser scanning confocal
- Light microscope
-
What is the origin of the outer membrane of a mitochondrion according to endosymbiosis?
- Host cell membrane
- Bacterial cell wall
- Nuclear envelope
- Endoplasmic reticulum
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