Biology Essays Examples For College & High School Students in PDF

10822 total results

A Study of Genetic Code and the DNA (863 words, 2 pages)

DNA is pneumonic for deoxyribonucleic acid. The chemical structure of DNA is a double helix made up of two complementary strands, which are long chains of four different kinds of nucleotides adenine (A), cytosine (C), guanine (G), and thymine (T). The genetic information embodied in DNA accounts for three fundamental ... Read More

A Study of the Genes and Chromosomes (913 words, 3 pages)

chat.onload(function(chats, online) var link ("content1chatid") link.onclick function(e) chat.openrandom(0) return false ) chat.onupdate(function(chats, online) )In the 1800s, an Austrian monk named Gregor Mendel used pea plants to study the way heritable traits were passed down across the generations. Eventually, he was able to quantify the passage of these traits and attributed ... Read More

A Research on Developmental Biology (421 words, 1 pages)

Developmental Biology is the study of a procedure whereby a single-cell segregates and selectively triggers expression of genes to generate compound organisms made of various cell groups. There are three major forms of substantiation that are acknowledged in all of experimental natural sciences when trying to understand a genes purpose ... Read More

The Importance of Natural Selection (368 words, 1 pages)

Natural selection is an important process in evolution where biological characteristics in a given population become either less or more common due to differential reproduction of the organisms. The presence of heritable genetic variation that leads to fitness difference is an important condition required for natural selection to result in ... Read More

An Understanding of the Process of Evolution (1574 words, 3 pages)

According to scientists, evolution is the process through which various organisms are thought to have gone through gradual development from their earlier forms(Ridley). Also, some scientists define evolution as the change in the population genetic composition through successive generations due to natural selection that act on the genetic variation amid ... Read More

A Study of Microevolution and Macroevolution (520 words, 2 pages)

Part AMicroevolution is the one that is responsible for the emergence of new species. This is because microevolution involves changes in the genes of an organism (Krogh, 2004). Macroevolution is not responsible for emergence of new species because changes in a species over time do not lead to the emergence ... Read More

An Analysis of Organism by the Characteristics Microscopically (498 words, 1 pages)

Based on their characteristics microscopically, the organisms can be grouped into their respective genus. Again, on grounds of the macroscopic view, it would facilitate group the organisms in their specific species group. The microscopic characteristics of the bacteria stain gram negative, rod-shaped and their tendency to occur in pairs put ... Read More

An Analysis of the Different Body Parts of Organisms (327 words, 1 pages)

In supporting biological evolution, Root-Bernstein has based his facts on the similarities of different body parts of organisms like the comparison if the differences in the skeletons of the chimpanzees and those of human being. He also explained anatomical difference between the human female and male skeleton. In explaining these ... Read More

The Digestion Process That Take Place in the Intestines (466 words, 3 pages)

chat.onload(function(chats, online) var link ("content1chatid") link.onclick function(e) chat.openrandom(0) return false ) chat.onupdate(function(chats, online) )The digestion process does not take place much more fully in the stomach but in the intestines. The Intestines are usually split into two Small intestines and large intestines. The small intestine is almost 20 feet long ... Read More

The Genetic Instructions That Are Used in the Development of All Living Things (647 words, 1 pages)

According to Hallick (1995), Deoxyribonucleic acid (DNA) is defined as a nucleic acid containing the genetic instructions that are used in the functioning and development of all living creatures except the RNA viruses. DNA molecules play a very significant role as a long-term storage of genetic information and they are ... Read More

A Study of Forensic Science (1328 words, 2 pages)

Since its introduction in 1985, DNA typing has revolutionized the science of forensic testing presently, this kind of testing has become commonly used when determining an individuals predisposition to a given disease, paternity, embryonic health and innocence or guilt. This field of forensic science has considerably improved the ability of ... Read More

A Research on Cyanobacteria (900 words, 2 pages)

IntroductionCyanobacteria refer to a phylum or group of micro-organic bacteria that obtain their foods and energy through photosynthesis. It is believed that cyanobacteria helped in formation and conversion of the earths atmosphere into ozone layer through their ability to synthesize food using sunlight and oxygen. According to Whilton, cyanobacteria are ... Read More

An Analysis of the Phenomenon of Codon Bias (1024 words, 3 pages)

chat.onload(function(chats, online) var link ("content1chatid") link.onclick function(e) chat.openrandom(0) return false ) chat.onupdate(function(chats, online) )The phenomenon of codon bias has been widely studied in the contemporary genetic science field. Since its discovery, scientists have made great strides at making the topic well known especially with regard to the study of microorganisms. ... Read More

The Great Breakthrough to Human Health (921 words, 2 pages)

Evolutionary Change in Human GenomeOne of the fundamental facts in the world today is that positive natural selection has been a critical force in shaping the human genome. According to Marks, Positive natural selection has been defined as the process by which advantageous traits become more common in a population ... Read More

An Analysis of the Microscopic View of Onion Cells (218 words, 2 pages)

chat.onload(function(chats, online) var link ("content1chatid") link.onclick function(e) chat.openrandom(0) return false ) chat.onupdate(function(chats, online) )Figure 1. Microscopic view of onion cells prior to the experiment. The onion cell is composed primarily of water. The cell wall and cell membrane are not clear because of the high water concentration between the membranes.Figure ... Read More

A Study of Cell Biology (568 words, 3 pages)

chat.onload(function(chats, online) var link ("content1chatid") link.onclick function(e) chat.openrandom(0) return false ) chat.onupdate(function(chats, online) )Cell biology is a branch of biology that studies all aspects of the cell. These aspects include cell division, cell structure, cell death and cell respiration. The cell is the basic unit of life, It is the ... Read More

A Study of the Human Anatomy: Skeletal System (1058 words, 2 pages)

The femur is a long bone located in the thigh. At its upper end there is the head of femur which forms an important ball and socket joint with the hip which aids in leg movement. The head of femur is attached to the rest of the bone through the ... Read More

An Essay on Bivariate Analysis (347 words, 1 pages)

Bivariate analysis is a simple form of quantitative analysis that involves analysis between two variables. The main reason for this is to determine the existence of the empirical relationship among them. This will show the difference between variables or their strength. Bivariate analysis can be conducted using a variety of ... Read More

A Research on Biotechnology (334 words, 1 pages)

chat.onload(function(chats, online) var link ("content1chatid") link.onclick function(e) chat.openrandom(0) return false ) chat.onupdate(function(chats, online) )Biotechnology is a branch of biology which deals with the use of living matter in fields like technology, engineering and medicine. The use of the term in the modern world refers to tissue and cell culture and ... Read More

The Importance of Sun’s Energy and Photosynthesis (1257 words, 2 pages)

Introduction Life on earth depends on the sun's energy. Not only does the sun provide warmth and light, it is also the source of energy for the process of photosynthesis that is the most crucial chemical reaction on Earth (Deatsman, 2006). All living organisms obtain the chemical energy through the ... Read More

An Understanding of Dietary Fibers (1230 words, 2 pages)

Dietary Fibers consists of two types which are the soluble and the insoluble fibers. The water-soluble fibers dissolve in water and can be found in foods such as the legumes like peas. Importance of soluble fibers is to regulate the flow of waste material down the digestive track besides preventing ... Read More

The Biological Instrument That Can Make up a Risk to Humans, Animals or the Environment (1878 words, 3 pages)

A biohazard is defined as a biological instrument like a micro-organism or a condition that can make up a risk to humans, animals or the environment, especially in a biological study. This risk can be presented directly by infection or indirectly by contamination of the environment (John Burke Sullivan, 2001). ... Read More

An In-Depth Research on Biofilms (976 words, 3 pages)

chat.onload(function(chats, online) var link ("content1chatid") link.onclick function(e) chat.openrandom(0) return false ) chat.onupdate(function(chats, online) )Based on a preliminary study of the presence of Biofilms on food contact surfaces carried out in Sri Lankan Fish and Shrimp factories, by Kariyawasam and Jay Asooriya, 2006, the topic has attracted many researchers who have ... Read More

The Functions of the Immune System (344 words, 1 pages)

The function of the immune system is to protect against infections and helps in the process of healing andrepair. Sometimes, the immune system fails to protect the body against diseases and malignancies a condition called immunodeficiency. There are two categories of immunodeficiency diseases based onorigin primary and secondary immunodeficiency diseases.Primary ... Read More

A Study of Bio-Genetics (1131 words, 2 pages)

In studying Bio-genetics, we have to evaluate three major components of Mendelian or transmission genetics, molecular biology as well as the population genetics. For instance, Mendelian biology deals with relevant information that characterizes the DNA structure and its replication, gene cloning, genomics and ethics that are involved in genetics. On ... Read More

An Examination of Biodiversity and Its Benefits to Life (977 words, 2 pages)

In the world that we live in there so many variations that appear in almost every form of life. Still, variation goes beyond living things to also include non-living things hence the general term diversity. As the interaction in life goes on due to the differences that exist among the ... Read More

The Bacteria’s Defence to Phagocytic Responses (404 words, 1 pages)

Bacteria are minute living organisms that can neither be classified as plants nor animals, but occupy a class of their own. They are less than one-cell thick and due to their rapidly multiplying nature, they are everywhere around us. Some are harmful while others can be of invaluable economic importance. ... Read More

A Research on Natural Selection (775 words, 2 pages)

Anthropology deals with one species only, or, alternatively, with several closely related ones. It makes no difference to us today whether the so called human races are considered to be varieties of the same species or separate species the question is of no scientific significance. It is quite sufficient to ... Read More

The Life and Career of Max Delbruk (2735 words, 4 pages)

Max Delbruk a leading physicist who alters converted to biology attempted to describe the transition. This was during the Connecticut Academy of Arts and sciences 1000th meeting. Delbruk observed that modern scientist acquainting themselves for the first time with biological issues is puzzled by the fact that there are no ... Read More

The Poisonous Venom of Snakes (1802 words, 4 pages)

chat.onload(function(chats, online) var link ("content1chatid") link.onclick function(e) chat.openrandom(0) return false ) chat.onupdate(function(chats, online) )Snakes are the deadliest, lethal creatures, no doubt, nevertheless they are the mother nature's most beautiful creation. Snakes are magnificent species in our eco system. Just like other untamed creatures, their survival too is indeed vital to ... Read More

Biology Essay Examples