Why is it important to test the principle that cells only arise from pre-existing cells, and how does this principle underpin our understanding of the natural world?
What evidence from Pasteur’s experiments demonstrates that spontaneous generation of cells and organisms no longer occurs on Earth?
How does the endosymbiotic theory explain the origin of eukaryotic cells?
How might the first cells have arisen from non-living material?
Why can cells only be formed by the division of pre-existing cells?
Why is accurate quantitative measurement essential in the design of experiments involving osmosis?
How can osmolarity in tissues be estimated by bathing samples in hypotonic and hypertonic solutions?
Why must tissues or organs used in medical procedures be bathed in a solution with the same osmolarity as the cytoplasm to prevent osmosis?
What are the structure and function of sodium-potassium pumps in active transport and potassium channels in facilitated diffusion within axons?
How does the fluidity of membranes enable endocytosis and exocytosis, and what role do vesicles play in moving materials within cells?
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