Radiobiology - Essay Example

Only on StudentShare

Extract of sample
Radiobiology

The smallest structural and functional component of protoplasm that can exist freely is the cell (Suntharalingam et al, 2005, p. 485). It is just necessary to study the effects of radiation at the cellular level to truly understand the factors that affect biological tissues. Cells are of two types - somatic cells and germ cells. Of these somatic cells have three subtypes - stem cells (cells that generate other cells through differentiation), transit cells (cells that are in the state of being transformed from one type of cell to another) and mature cells (cells that are fully differentiated and are relatively stable in that state) (Suntharalingam et al, 2005, p. 487). Somatic cells proliferate through two well-defined time periods - mitosis (M), when cell division takes place while maintaining the species chromosome number; and the period of DNA synthesis (S). (Suntharalingam et al, 2005, p. 487). Before S, there is a gap (rest period) when DNA is not yet synthesized. After S there is another gap (when DNA is synthesized but other metabolic processes are taking place). After M takes place. Thus, the cell proliferation cycle is - S M. In time this whole process is - (1-8h) S (6-8h) (2-4h) M (>1h) (h = hours). Thus, the entire cell proliferation cycle can take between 10 to 20 hrs (Suntharalingam et al, 2005, p. 487).
When there is death among non-prol ...Show more

Summary

Before beginning onto the body of the paper it is first necessary to define a few terms that are going to used throughout it. Firstly, in this sense, it becomes necessary to define what radiobiology is. The following puts it as aptly as is possible.
The authors propose that radiobiology has two componential disciplines - radiation physics and biology…
Author : luciennegrimes
Save Your Time for More Important Things
Let us write or edit the essay on your topic
"Radiobiology"
with a personal 20% discount.
Grab the best paper

Related Essays

X-ray Photons.
Monochromatic beam of X-ray photons is directed perpendicularly to the electric and magnetic fields. For simplicity they often consider the electric field only and neglect the magnetic field. From a quantum mechanical perspective a monochromatic beam is viewed as being quantised onto photons each having an energy and momentum.
8 pages (2000 words) Essay
Human Behavioral Ecology
HBE attempts to describe the behavioral diversity of humans as a consequence of environmental dependant responses made by individual persons to maximize their fitness. A limitation to this goal is the specification of factors that constrain an individual person's struggle to maximize his fitness.
5 pages (1250 words) Essay
Carbon Dioxide Reduction
Hopefully, of late, UK government has much considerately taken decision to reduce and emit carbon-di-oxide from buildings. Consequently, building industry in the Britain is at stake and likely to face countless barriers in promoting building industry in the country.
5 pages (1250 words) Essay
Pheromones
According to Kohl J., 1996, pheromones are social environmental chemical stimuli (e.g. odours) which are produced by one individual and detected by another individual of the same species. They exert their action at a sub- conscious level and the animal may not be aware that it is responding to an odour.
8 pages (2000 words) Essay
Charging and Discharging Capacitors
When a capacitor is being charged, at t=0, the voltage across the capacitor terminals is 0. As the charge builds up in the capacitor the voltage also increases. The increase is exponential, Kirchoff's Voltage Rule (Multi-loop Circuits, 1999), because as the charge builds up the rate of increase in voltage also increases.
8 pages (2000 words) Lab Report
Puffin
They are excellent swimmers and fishers and their coloring greatly aids their aquatic lifestyle such that their white underside camouflages them from predators below by allowing them to blend in with the brightness glaring through the water and their black backs camouflage in perfectly with dark waters, as it appears from above, safe guarding puffins from larger predators and fowl (NHPTV).
2 pages (500 words) Essay
Economic Effects of WaterPollution
Of that 3%, 75% of it is frozen; leaving a mere 1% of the earth's surface water which is available for consumption. Some of the major sources of water pollution include agricultural pollution, organic pollution, toxic waste, runoff and thermal pollution.
11 pages (2750 words) Essay
Polymerase chain reaction practical, Genetics.
The major constituents of PCR are, 1) DNA polymerase 2) short DNA fragment as primer 3) dNTPs 4) buffer and 5) DNA template. Invention of thermo stable DNA polymerase from thermophilic bacterium Thermus aquaticus (Taq Pol) (2) has made PCR a routine process in all molecular biology laboratories.
6 pages (1500 words) Essay
Are Neuroscientists Able to Explain Human Consciousness?
As whatever consciousness ultimately might be, it is somehow based on the workings of the central nervous system. For centuries, the brain was considered to be a relatively unimportant organ used to cool the blood. By contrast, at present, the brain is the most complex chunk of ordered material we have encountered in the universe so far.
7 pages (1750 words) Essay
The Mystery Lights Seen Near Marfa, Texas: Space Aliens or Simply Gas?
Larger part of this essay describes not only he lights, but also two opposite meanings about it. The lights are most often observed during dusk and right after the sun has set. Their variable nature makes it hard for both believers and skeptics to prove they exist or don’t exist. It all depends on how you look at it, both from where you literally stand and philosophically stand.
3 pages (750 words) Essay
Find out how much would it cost
to get a custom paper written by a pro under your requirements!
Win a special DISCOUNT!
Put in your e-mail and click the button with your lucky finger
Your email
YOUR PRIZE:
Apply my DISCOUNT