Podcast
Questions and Answers
Which of these cellular structures is found in both plant cells and animal cells, but not in bacterial cells?
Which of these cellular structures is found in both plant cells and animal cells, but not in bacterial cells?
- Plasma Membrane
- Cell Wall
- Nucleus (correct)
- Chloroplasts
According to the scale bar, which biological entity is the smallest?
According to the scale bar, which biological entity is the smallest?
- Protein
- Bacterial cell
- Animal cell
- Lipid (correct)
Which of the following cellular structures is unique to plant cells?
Which of the following cellular structures is unique to plant cells?
- Endoplasmic Reticulum
- Mitochondria
- Plasma Membrane
- Large Vacuole (correct)
Which of the following structures is present in bacterial cells?
Which of the following structures is present in bacterial cells?
Which of these represents a technology that has allowed scientists to observe smaller cell structures?
Which of these represents a technology that has allowed scientists to observe smaller cell structures?
Flashcards
Cell Wall
Cell Wall
A rigid outer layer found in plant and bacterial cells, not in animal cells.
Nucleus
Nucleus
The control center of the cell that holds DNA, present in animal and plant cells, but absent in bacteria.
Chloroplasts
Chloroplasts
Organelles in plant cells that perform photosynthesis, not found in animal or bacterial cells.
Mitochondria
Mitochondria
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Electron Microscope
Electron Microscope
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Study Notes
Cell Structure Comparison
- Cell structures like the cell wall, cell membrane, nucleus, Golgi apparatus, endoplasmic reticulum, chloroplasts, mitochondria, large vacuoles, and centrosomes were examined.
- The presence or absence of these structures in animal, plant, and bacterial cells was noted.
- Cell walls are present in plant and bacterial cells but not in animal cells.
- Cell membranes are present in all three types of cells.
- Animal and plant cells have a nucleus, but bacteria do not.
- Plant cells have chloroplasts, while animal and bacterial cells do not.
- Mitochondria are present in both animal and plant cells, but not in bacteria.
- Large vacuoles are present in plant cells but not in animal or bacterial cells.
- Centrosomes are found in animal cells but not in plant or bacterial cells.
Cell Size Comparison
- Cell structures can be very small; some are too small to see with a light microscope.
- Electron microscopes can visualize structures that are too small for light microscopes .
- Cell sizes differ; atoms are the smallest, followed by molecules, then larger cellular structures like proteins and lipids.
- Bacteria are generally the smallest cells, with most bacteria being about one micrometer ((µm) in size. .
- Larger cells, like animal and plant cells, range in size from 10–100 µm.
- Even larger structures, such as an egg (1 cm to 10 cm).
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