We may be tempted to suggest that a new undiscovered law governs the behavior of organic molecules that come together to form life, as the phenomena associated with life show such remarkable organization and planning.
There is no evidence of special laws in living systems.
The observed phenomena associated with life obey the laws of physics.
The existence of life doesn't follow the basic principles of physics, but it may.
The information needed to guide the activities associated with life is contained within the large organic molecule inside the cells.
The specific groupings of atoms within the molecule have been untangled.
A molecule always participates in a well-defined activity within the cell because of these specific structures.
It is likely that all the functions of cells and of cell aggregates are the result of a large number of chemical reactions.
This leaves the most important question unanswered, what are the forces and principles that initially cause the atoms to assemble into codes which lead to life The answer is probably within the scope of our theories of matter.
The atmosphere of the primordial Earth may have existed as recently as 3.5 billion years ago, according to a simulation done in 1951 by S. L. Miller.
He pumped water, methane, ammonia, and hydrogen through an electric discharge.
The discharge showed the energy sources available from the sun, lightning, and radioactivity.
Miller found that the chemical activities in the mixture produced some of the basic building blocks of the human body.
Hundreds of other organic molecules have been synthesised under similar conditions.
Many of them are similar to the components found in cells.
It is possible that life began in the primordial oceans because they were rich in organic molecules.
A number of small organic molecules combined to form a large molecule.
These were combined into living cells.
The time span of evolution is long enough to make this scenario plausible.
The current laws of physics can explain everything.
The completeness of the descriptions provided by physics can't be proved at the present state of knowledge.
Many phenomena have been explained by the principles of physics.
There seems to be no need for new laws at the moment.
The most recent use of fMRI is described through a literature search.
Discuss some of the most notable attributes of living systems.
Some of the fundamental concepts in mechanics will be defined in this section.
We assume that the reader is familiar with the concepts and that a simple summary will suffice.
A detailed discussion can be found in some basic physics texts.
The rate of change of position is referred to as the vechicle.
It is necessary to specify magnitude and direction.
The quantity is avector.
The rate of change in velocity is referred to as acceleration.
A number of useful relations can be derived from uniform acceleration.
Along the path, both velocity and acceleration can vary.
The state of motion of the body can be changed by force.
The force applied to a unit area is called pressure.
A force applied to a body can change its state of motion.
The property of the body is to resist change.
The mass of the Earth affects the weight of a body.
The weight of a body is determined by its mass.
Weight is a force that points down in the direction of a suspended plumb line.
Mass and weight are not related.
A body with no weight would still have mass if it were isolated from other bodies.
The laws are based on observation.
This is one of the most common equations in mechanics.
The calculation of the acceleration can be done if the applied force and mass of the object are known.
The distance traveled and the object's speed can be calculated from the previously given equations when the acceleration is known.
The acceleration is caused by the Earth's gravity.
The acceleration has been measured by observing the motion of the bodies.