Model organism

External features of Pigeon – Morphology – *The body of pigeon is spindle shaped (Fig.20.1) having a size of 20-25 cm. *The body is divisible into head, neck, trunk and tail. *The body is covered by backwardly directed…

unit within a living thing is known as a cell. Organisms are also a living thing and cell is considered to be the basic block of organisms that builds them. There are many different types of cells in a living thing and are divided into two main categories (i) prokaryotic and eukaryotic. (Karp, 2010). Characteristics of living cell Cells are considered as the most fundamental unit that has the responsibility to carry functions within a living organism (De Robertis & De Robertis, 2006). The…

of all other body systems to function smoothly and properly by supplying nutrients for it to live.These organisms need to have the ability to transport particles such as molecules or ions, into the body of the organism and to move the said particles around inside the organism. They also need to be able to dispose of the unwanted substances from the body. This is required in order for organisms to be able to breathe, eat and maintain…

2.8 Protected Areas and Wildlife Management Wildlife management has been defined as the attempt to create a balance between the needs of wildlife and that of humans (people) by adopting and using the best strategies proven by science (Fred, 2008). Wildlife management according to Potter (1973) is a unified discipline with an attempt to achieve best results. Wildlife management includes practices such as game keeping, pest control and wildlife conservation. Soule (1986) argued that wildlife…

People keep wondering whether cloning should be evolved or completely banned. According to biology, cloning is the procedure of producing similar populations of genetically identical individuals. Clones are organisms that are genetically duplicates of each other. Where each and every piece of their DNA is identical. Cloning is a very important topic which has many branches under it. For example natural cloning, molecular cloning, human cloning, animal cloning, organ cloning, and many other…

Conditions required for bacterial growth and therefore their reproduction are referred to as Extrinsic and Intrinsic factors. Bacteria can grow anywhere in the world including animals and plants, depending on their characteristic, type and so on. Knowing that, it seems like bacteria can grow everywhere once they have correct conditions. However there are a lot of factors that can affect bacterial growth. The factors affecting bacterial growth are the internal and external conditions of the…

For years biologists have known and used bioelectricity, or animal electricity, the study of electrical flow in the human and animal bodies. Our muscles and nerves only work because of bioelectricity. But how was electricity in the body discovered? What led someone to study it? The answer is a combination of luck and curiosity from a scientist named Luigi Galvani. Galvani grew up and lived in Bologna, Italy. He was born on September 9, 1737 in a middle-class family. Galvani's quest as a…

B) Compare & contrast: Plant & Animal cells. Although plant and animal cells contain numerous similarities, they also feature prevalent significant differences. Animal and plant cells not only have functional differences but also have structural differences. Plant and animal cells both have a nucleus which is the control centre of the cell, it controls how the cell develops and how it reproduces. DNA is the genetic makeup of a cell, organ and body systems, the DNA in a cell is held and…

The mortality of the bacteria can be observe by using hanging drop method and wet mount method. Hanging drop technique is a well-established method for examining living, unstained, and very small organism. The hanging drop is where employs a glass slide with a circular concavity in the center into which a drop of fluid, containing the microorganism. Wet mount is the technique where a drop of water that contains the bacteria is put on the slide and…

The inheritance of genes is vital to our existence. Genes are hereditary units containing DNA (deoxyribonucleic acid) and are passed from parent to offspring. The DNA provides instructions for the formation of proteins and as a result, genes are the main element responsible for the different traits we acquire as we mature. Genes are contained in chromosomes. There are 46 chromosomes in each cell (bar the gametes) and each chromosome contains a single long strand of DNA with thousands of genes…