All organisms are made up of cells, have different levels of organization, use energy, respond to and adapt to their environments, grow and reproduce. If something does not exhibit each of these characteristics, it is technically not living.Continue Reading
The cell is the basic unit of life, and each living thing consists of one or more cells. An organism shows levels of organization within itself, whether molecular or cellular.
Organisms all need some form of energy to carry on the basic function of life. They also use energy to grow and develop. Once mature, an organism can engage in reproduction to pass its genes on to the next generation. Living things respond to their environments through actions such as moving away from danger.Learn more about Molecular Biology & DNA
Humans and other multicellular organisms need mitosis to regenerate cells for both growth and repair. Mitosis is the process of cell division. Along with meiosis, it is one of the key parts to the creation of offspring, wound healing and growth in adolescent children.Full Answer >
The biological spectrum consists of all living organisms divided into three domains, coexisting across various levels of biological organization. Microbiologist Carl Woese organized all known organisms into a phylogenetic tree of life based on RNA and common ancestor comparisons. The three domains are bacteria, archaea and eukaryota, which are further subdivided into kingdoms. All three domains exist on various levels of biological organization, from a cellular level to its biosphere.Full Answer >
Different bacteria have different optimal growth temperatures depending on their environments. Human gut bacteria thrive at 98 degrees Fahrenheit, while this same temperature would be lethal to most plant bacteria.Full Answer >
Cyanobacteria all live in aquatic environments and use photosynthesis to make their own food. Additionally, all cyanobacteria belong to the larger class of bacteria, which is one of the largest groups of organisms. Most cyanobacteria are unicellular, and they typically live in large colonies.Full Answer >