Q:

What is an organism?

A:

Quick Answer

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.

Continue Reading

Full Answer

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

Related Questions

  • Q:

    How does agglutination occur?

    A:

    Agglutination occurs when blood cells or bacteria clump together, and it is often a response to a wound or injury. Blood cell clumps, called agglutinates, are visible, making them a reliable test for detecting antibodies in a blood sample. For example, agglutination occurs if a person undergoes a blood transfusion with a blood type that doesn't match his own.

    Full Answer >
    Filed Under:
  • Q:

    How do echinoderms reproduce?

    A:

    Echinoderm reproduction is asexual, which means it takes place within the organism itself. It involves the division of the body into two or more parts (fragmentation) and the regeneration of missing parts.

    Full Answer >
    Filed Under:
  • Q:

    What does phenotype mean?

    A:

    Phenotype is an organism's observable properties that are the result of the interaction of the organism's genotype and the environment. Observable properties include things such as eye color, height and hair color.

    Full Answer >
    Filed Under:
  • Q:

    Why are protists important to humans?

    A:

    Various protist species are important to humans because they are the primary producers at the base of the food pyramid, turning the energy from the sun into a form that can be passed from organism to organism up the food pyramid. Protists also stabilize the ion levels of water, which allows seaweed and fish, both of which are important food sources for humans, to thrive.

    Full Answer >
    Filed Under:

Explore