An organism is a living entity composed of many interrelated components that work together to achieve a common goal. Organisms come in a wide variety of sizes, shapes and lifestyles, but they all share some similar traits. All organisms require food and excrete waste, grow, reproduce and, ultimately, die.Know More
Animals are the most obvious types of organisms. Animals are the most mobile and active of the organisms, and they include such species as humans, sharks and ants. Each has evolved survive in their particular niche.
Plants are one of the largest groups of organisms, and they form an important part of the food chain. Plants are called “the producers” of the living world, as they harness sunlight and turn it into a form of chemical energy. Called photosynthesis, this process enables the entire food chain to function.
Bacteria are some of the most numerous organisms, as they live on virtually every surface on planet Earth. Bacteria are very simple organisms, and their direct ancestors may have been some of the earliest forms of life. Many bacteria are beneficial and necessary for life, while others can be very harmful. Other types of organisms include protozoa, algae and fungi. Scientists disagree over whether viruses are organisms.Learn more about Biology
DNA, or deoxyribonucleic acid, is used in the human body in order for an organism to reproduce, develop and survive as well as in science for genetic engineering, forensics, bioinformatics, evolutionary history and information storage. A human's DNA code contains about 3 billion bases and 20,000 genes in 23 pairs of chromosomes.Full Answer >
Homeostasis is the process through which an organism maintains certain internal conditions, such as a human body's internal mechanisms maintaining body temperature at a specific level to prevent over or under heating; this process is important because it makes it possible for cells and organs to function properly. For example, certain parts of the human body cease to function if they become too hot or too cold; this is why it is possible for people to freeze to death or die from overheating.Full Answer >
In biology, a vector is any organism that facilitates the spread of a disease. Vectors do not inherently cause diseases but are mere vehicles of the germs that cause disease. Vectors may include small insects or larger animals that carry viruses from one host to another.Full Answer >
A heterotroph is any organism, including carnivores, omnivores and herbivores, that cannot produce its own food through solar energy and must feed off another life form. In the food chain, heterotrophs represent the consumers. The autotrophs, such as plants and algae, are called the producers of the food chain because of their ability to produce their food with no need to consume another organism.Full Answer >