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“The actual mechanics of cell division, according to Dick McIntosh at the University of Denver, require significantly more instructions than it takes to build a moon rocket or supercomputer. First of all, the cell needs to duplicate all of its molecules, that is DNA, RNA, proteins, lipids, etc. At the organelle level, several hundred mitochondria, large areas of ER, new Golgi bodies, cytoskeletal structures, and ribosomes by the million all need to be duplicated so that the daughter cells have enough resources to grow and, in turn, divide themselves. All these processes make up the ‘cell cycleâ€�. Some cells will divide on a daily basis, others live for decades without dividing. The cell cycle is divided into phases, starting with interphase, the period between cell divisions (about 23 hours), and mitosis (M phase), the actual process of separating the original into two daughter cells (about 1 hour). Interphase is further split into three distinct periods: gap 1 (G1, 4â€�6 hours), a synthesis phase (S, 12 hours), and gap 2 (G2, 4â€�6 hours). Generally, cells continue to grow throughout interphase, but DNA replication is restricted to the S phase. At the end of G1 there is a checkpoint. If nutrient and energy levels are insufficient for DNA synthesis, the cell is diverted into a phase called G0. In 2001 Tim Hunt, Paul Nurse, and Leeland Hartwell received the Nobel Prize for their work in discovering how the cell cycle is controlled. Tim Hunt found a set of proteins called cyclins, which accumulate during specific stages of the cell cycle. Once the right level is reached, the cell is ‘allowedâ€� to progress to the next stage and the cyclins are destroyed. Cyclins then start to build up again, keeping a score of the progress at each point of the cycle, and only allowing progression to the next stage if the correct cyclin level has been reached.”
― Terence Allen, The Cell: A Very Short Introduction

“Mission is purpose magnified,
Purpose is potential focused,
Potential is protoplasm evolving,
Protoplasm is a pocket universe.”
― Abhijit Naskar, Insan HimalayanoÄŸlu: It's Time to Defect

“Science of Life, Class in Session
(Sonnet 2087-2088)

Nature doesn't kill anybody,
nor does it save anybody -
life and death are human constructs,
just like beauty and the grotesque -

nature is above all that,
not in an almighty, all-knowing
sort of way, but more of
an indifferent sort of way -

because in nature, nothing's born,
nothing dies, they just change shape,
and some of those shapes are sentient,
some intelligent, some neither -

and each identity gets restructured
as they go through the shape-shifting,
which includes restructure of sentience,
or non-sentience, as the case may be.

Same elements that make the nonsentient stars,
when they change shape into organic material,
such as humans, they produce sentience,
but as a human corpse decay into nature,

those elements get absorbed into the soil,
into trees, bugs, and all sorts of creatures,
thus they seep into a diverse range of
sentient and nonsentient materials -

and thus the cycle continues,
from the birth of the universe
till the end of the universe -
beyond that, I don't know - nobody does -

it doesn't matter what happens after,
what matters is, how you behave now.”
― Abhijit Naskar, Neurosonnets: The Naskar Art of Neuroscience