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Questions and Answers
What is the main difference between unicellular organisms and multicellular organisms?
What is the main difference between unicellular organisms and multicellular organisms?
- Multicellular organisms have a single cell while unicellular organisms have many cells.
- Multicellular organisms reproduce sexually, whereas unicellular organisms reproduce asexually.
- Unicellular organisms have more organelles than multicellular organisms.
- Unicellular organisms perform all life processes in a single cell, while multicellular organisms distribute functions among multiple cells. (correct)
Which organelles are mentioned in the text as common to all cells, regardless of their function and location?
Which organelles are mentioned in the text as common to all cells, regardless of their function and location?
- Endoplasmic reticulum and Golgi apparatus
- All cells have different organelles based on their function
- Mitochondria and lysosomes
- Ribosomes and chloroplasts (correct)
How do unicellular organisms generally compare to multicellular organisms in terms of cell number?
How do unicellular organisms generally compare to multicellular organisms in terms of cell number?
- Unicellular organisms have more organelles than multicellular organisms.
- Multicellular organisms are more efficient due to having multiple cells specialized for different functions.
- Multicellular organisms always have a greater number of cells than unicellular organisms.
- Unicellular organisms are simpler because they only consist of a single cell. (correct)
Why do multicellular organisms have cells with similar basic structure and functions?
Why do multicellular organisms have cells with similar basic structure and functions?
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How do organelles contribute to the life and functions of a cell?
How do organelles contribute to the life and functions of a cell?
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Study Notes
Unicellular Organisms
- Unicellular organisms are made up of a single cell, e.g. Bacteria, Amoeba, Paramecium, Chlamydomonas.
- A single cell in unicellular organisms performs all life processes, including:
- Obtaining food
- Respiration
- Excretion
- Growth
- Reproduction
Multicellular Organisms
- Multicellular organisms are made up of multiple cells, e.g. some fungi, plants, and animals.
- All cells in multicellular organisms have similar basic structure and undertake similar basic functions.
- Cells in multicellular organisms have the same organelles, regardless of their function and location in the organism.
- Organelles are essential for a cell to live and perform its functions.
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