1. What does the process of endosymbiosis refer to in cell evolution?
2. How are macromolecules and water similar or different in their composition and bonding?
3. What is the primary role of water's hydrogen bonding and polarity in biological systems?
Endosymbiosis — evidence?
Organelle DNA, double membranes, bacterial size, division, ribosomes.
Water — property?
Forms hydrogen bonds, acts as solvent, exhibits cohesion and density anomalies.
Macromolecules — composition?
Proteins, nucleic acids, carbohydrates, lipids; built from monomers.
Endosymbiosis — definition?
Organism engulfs another, forming symbiosis.
Mitochondria & chloroplasts — origin?
Derived from free-living bacteria.
Membrane layers — significance?
Double membranes indicate engulfing event.
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