Questions and Answers
List the 3 parts of the Cell Theory.
- All cells come from existing cells. 2. Cell is the basic unit of all living things. 3. All organisms are composed of 1 or more cells.
What is the benefit of a scanning electron microscope over a light microscope?
Highly magnified images
What is the composition of the cell membrane?
Double layered lipid bilayer
What is the organization of life from least complex to most?
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What are organs made of?
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What system works together to maintain homeostasis in the body? (Select the correct options)
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What is the shape of red blood cells?
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How do red blood cells help maintain homeostasis in your body?
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What is the function of white blood cells?
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What organelles would you expect to find in large numbers so antibodies can be synthesized?
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Why is the vacuole in a plant cell so large?
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Name 3 structures that differ in plant and animal cells.
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What microscope can produce 3-dimensional images?
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Name 2 types of active transport.
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What is the function of lysosomes?
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Study Notes
Cell Theory
- All cells arise from pre-existing cells.
- The cell serves as the fundamental unit of life.
- Organisms are made up of one or more cells.
Microscopy
- Scanning electron microscopes provide highly magnified images compared to light microscopes.
- Scanning electron microscopes can generate 3-dimensional images.
Cell Membrane Composition
- The cell membrane is a double-layered lipid bilayer, providing a flexible structure.
Levels of Biological Organization
- Organization of life progresses from least complex to most complex: cell → tissue → organ → organ system → organism.
Tissue Composition in Organs
- Organs are composed of multiple similar tissues that work together.
Homeostasis Regulation
- Various systems that contribute to maintaining homeostasis in the body exclude reproductive, digestive, circulatory, immune, and endocrine systems.
Red Blood Cells
- Red blood cells have a concave shape, allowing efficient oxygen transport throughout the body.
White Blood Cells and Antibody Synthesis
- White blood cells play a crucial role in fighting infections.
- High amounts of rough endoplasmic reticulum are present for the synthesis of antibodies.
Vacuole in Plant Cells
- The large vacuole in plant cells is filled with fluid, aiding in the support of leaves and flowers.
Differences Between Plant and Animal Cells
- Key structural differences include the presence of chloroplasts, centrioles, and a cell wall in plant cells.
Active Transport Mechanisms
- Two types of active transport:
- Molecular transport, which involves protein pumps for small molecules.
- Bulk transport, which moves large molecules into or out of the cell.
Lysosome Function
- Lysosomes are responsible for breaking down or recycling macromolecules within the cell.
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Description
Test your knowledge on the three parts of the Cell Theory and the advantages of using a scanning electron microscope over a light microscope. This quiz also covers the composition of the cell membrane, enhancing your understanding of cellular biology. Perfect for students studying biology concepts.
