Fundamentals of Biological Chemistry

Estratto della scheda di revisione

Course Outline

  1. Endosymbiosis & Evidence
  2. Water & Properties
  3. Macromolecules & Composition
  4. Atomic Bonds & Properties
  5. Carbon & Organic Chemistry
  6. Functional Groups & Reactivity
  7. Lipids & Membrane Structure
  8. Hydrogen Bonds & Water Properties
  9. Acids & pH Regulation
  10. Diffusion & Osmosis

1. Endosymbiosis & Evidence

Key Concepts & Definitions

  • Endosymbiosis: The process where one organism engulfs another, leading to a symbiotic relationship; over time, the engulfed organism becomes a permanent part of the host cell.
  • Mitochondria & Chloroplasts: Organelles believed to have originated from free-living bacteria through endosymbiosis.
  • Membrane Layers: Double membranes surrounding mitochondria and chloroplasts, consistent with engulfing events.
  • Circular Chromosome: Genetic material in mitochondria and chloroplasts resembling bacterial DNA.
  • Division: Mitochondria and chloroplasts replicate independently via binary fission, similar to bacteria.
  • Ribosomes: Their size and structure in these organelles resemble bacterial ribosomes, supporting bacterial origin.
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Anteprima del quiz

1. What does the process of endosymbiosis refer to in cell evolution?

2. What structural feature of mitochondria and chloroplasts provides evidence supporting their origin via endosymbiosis?

3. How are macromolecules and water similar or different in their composition and bonding?

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Anteprima delle flashcard

Endosymbiosis — evidence?

Organelle DNA, double membranes, bacterial size, division, ribosomes.

Endosymbiosis — definition?

Organism engulfs another, forming symbiosis.

Water — property?

Forms hydrogen bonds, acts as solvent, exhibits cohesion and density anomalies.

Mitochondria & chloroplasts — origin?

Derived from free-living bacteria.

Macromolecules — composition?

Proteins, nucleic acids, carbohydrates, lipids; built from monomers.

Membrane layers — significance?

Double membranes indicate engulfing event.

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