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
A dichotomous key is a series of questions about an organism. The questions are presented in pairs and organized in a way that answering them results in the correct identification of the organism. One example of a dichotomous key is available on the American Museum of Natural History website.Full Answer >
Feedback loops help maintain homeostasis by allowing the organism to respond to changes in its environment. Feedback loops are important because organisms are always dealing with changes in environment or internal condition, so the feedback loop prevents those changes from going too far and becoming dangerous.Full Answer >
Every living organism, animals and plants, need a continual supply of energy to perform the processes necessary for reproduction and survival. Some of the processes like metabolism occur continually, while others only occur at certain times, like muscle contractions and cellular movements.Full Answer >
Biology Online states that bioaccumulation describes a substance entering into an organism. Bioaccumulation mainly occurs through air or food intake and skin contact, but there are other ways for a substance to enter an organism. After bioaccumulation, an organism contains a higher amount of its new substance than its surroundings.Full Answer >