a small infectious agent that replicates only inside the living cells of an organism.

microscopic single-celled organisms that thrive in diverse environments.

single-celled eukaryotes, either free-living or parasitic, which feed on organic matter such as other microorganisms or organic tissues and debris.

A plant or an animal organism that lives in or on another and takes its nourishment from that other organism.

an organism that harbors another organism inside or near their body in a symbiotic relationship.

a person who harbors the pathogenic microorganism without suffering from any disease from it.

any living organism like bacteria, protozoa, or even fungi that cannot be seen with the naked eye

the passing of a pathogen causing communicable disease from an infected host individual or group to a particular individual or group, regardless of whether the other individual was previously infected.

any agent who carries and transmits an infectious pathogen into another living organism.

chemicals that kill or inhibit the growth of bacteria and are used to treat bacterial infections.

usually a unicellular organism that lacks a membrane-bound nucleus, mitochondria, or any other membrane-bound organelle.

an organism that consists of only one cell

sudden occurrence of a disease in a community, which has never experienced the disease before or when cases of that disease occur in numbers greater than expected in a defined area

a widespread occurrence of an infectious disease in a community at a particular time.

an outbreak of an infectious disease that spreads worldwide, or at least across a large region.

Injection of a killed microbe in order to stimulate the immune system against the microbe, thereby preventing disease.

Large molecules composed of one or more chains of amino acids which provide structure and support for cells.

a source of stored energy and are a component of cell membranes. They are oily to the touch and insoluble in water.

a simple sugar which is an important energy source in living organisms and is a component of many carbohydrates.

the sum of the chemical reactions that take place within each cell of a living organism and that provide energy for vital processes and for synthesizing new organic material.

the number of calories required to keep your body functioning at rest. the amount of energy expended by that organism in a given time period - usually daily.

technology that utilizes biological systems, living organisms or parts of this to develop or create different products.

the smallest structural and functional unit of an organism.

a unit of heredity which is transferred from a parent to offspring and is held to determine some characteristic of the offspring.

involves taking a gene from one species and putting it into another species.

the process of producing genetically identical individuals of an organism either naturally or artificially.

eukaryotic single-celled or multinucleate organisms that live by decomposing and absorbing the organic material in which they grow

caused by microorganisms such as viruses, bacteria, fungi or parasites and can spread between individuals.

simple sugars that serve as fuel molecules as well as fundamental constituents of living organisms

pathway by which cells release energy from the chemical bonds of food molecules and provide that energy for the essential processes of life.

cells that contain a nucleus and organelles, and are enclosed by a plasma membrane.

process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water.