1839

Cell theory

• Schleiden said that plants are made of cells
• or of things that are made by cells.
• Schwann said that animals, too, are made of cells
• or of things that are made by cells.
• Schleiden thought that cells were formed
• spontaneously, like crystals, but Dumortier and von Mohl
• pointed out that cells with two nuclei
• were in the process of cell division.
• Subsequently, Remak, then Virchow claimed
• that cells are created only by cell division.

Factory prototype

• The fact that each cell in your body
• contains your body’s complete instructions
• doesn’t mean that it’s easy.
• Fallen hairs and drops of spittle
• do not make little humans like yourself
• scattered all over your house.
• Bacteria, fungi, and pollens
• have an easier time, being simpler
• and able to survive on their own.
• The genetic code in each cell
• must be nurtured in a nuclear envelope, the nucleus,
• and surrounded by several other types of organelles.
• Membranes, pores, tubules, and vesicles,
• endoplasmic reticula, Golgi apparatuses, mitochondria,
• vacuoles, centrosomes, lysomes, and floating ribosomes
• make up millions of tiny biological factories
• that not only have a job to do but take care
• of their own maintenance and janitorial.

Seed

• Every part of a mustard plant
• grows from a tiny seed.
• Every mustard seed
• grows from a mustard plant.
• Every moment of grace
• grows from a tiny hope.
• Every hope in every life
• grows from a moment of grace.
• Every moment in a life
• is like a mustard seed.
• Every life in every place
• may nurture a tiny hope.