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Questions and Answers
What are the two components that are similar between animal and plant cells?
Which of the following statements is true about the size of plant cells compared to animal cells?
What is the primary source of energy for plant cells?
What is the primary source of energy for animal cells?
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Which of the following organelles is responsible for generating energy in both plant and animal cells?
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What is the main difference between the way plant cells and animal cells obtain energy?
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Study Notes
Disproof of Spontaneous Creation
- Spallanzini's experiment (1776): sealed a container containing meat broth after boiling, and no microorganisms developed, contradicting the idea of spontaneous creation.
- Needham's counterargument: the seal might deprive the broth of vital elements.
Cell Differentiation and Growth
- Cell differentiation: cells mutate into other types of cells, leading to a more complex organism.
- Single-celled organisms grow, but only slightly, making it nearly imperceptible.
Reproduction
- All organisms reproduce to continue their species' life.
Animal vs. Plant Cells
- Both are Eukaryotic cells.
- Similar organelles shared between animal and plant cells:
- Nucleus
- Mitochondria
- Endoplasmic reticulum
- Golgi apparatus
- Lysosomes
- Both have similar membranes and cytosol.
- Key differences:
- Plant cells can be larger than animal cells.
- Plant cells obtain energy from Chloroplasts, while animal cells obtain energy from Mitochondria.
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Description
Learn about Spallanzini's experiment in 1776 that challenged the idea of spontaneous generation, sealing a boiled meat broth container to prevent microorganism growth.
