37 results found

Search Results for: indicator

Indicator Species and Endangered Species

Indicator Species Certain species are capable of expressing characteristics that can indicate the state of the ecosystem... Read More

Indicator Species

A species which is a good indicator of the living conditions in a particular habitat. The peppermoth will express a black... Read More

Acid indicator

An acid indicator is a substance used to indicate the amount of acid in another... Read More

Iodine test

Iodine Test Definition The iodine test is a chemical reaction-based identification test for starch. In this test, iodine... Read More

Abiotic factor

An abiotic factor is a non-living element of the environment that influences the way organisms and ecosystems function. Some... Read More

Respiration rate

Respiration Rate Definition Respiration rate is a vital life process that expresses the breathing rate in an organism... Read More

Plasma volume

Definition noun The total volume of the blood plasma in the circulatory system Supplement The blood is comprised of plasma... Read More

Residual volume

Residual volume is a term that is most often seen in lung physiology where it is defined as the amount of air remaining in... Read More

Demographic transition

The demographic transition model is a theoretical framework that explains the historical shift in population dynamics as a... Read More

Lacuna

Definition of Lacuna What is lacuna? The word "lacuna" (noun, plural: lacunae) is derived from the Latin word- 'lacus',... Read More

Infradian rhythm

What is the Infradian Rhythm? An infradian rhythm is a type of biological rhythm that lasts longer than 24 hours, with a... Read More

Otolith

Definition noun, plural: otoliths A crystalline particle of calcium carbonate and a protein adhering to the gelatinous... Read More

Cellobiose

Definition noun plural: cellobioses cel·lo·bi·ose, ˌsɛləʊˈbaɪəʊz A disaccharide made up of two glucose... Read More

Monocyte

Monocytes Definition Monocytes are a subset of white blood cells (WBCs) or leukocytes that originate in the bone marrow.... Read More

Angiotensinogen

Definition noun An alpha-2 globulin protein that is found in the bloodstream and release into circulation mainly by the... Read More

Growth and Plant Hormones

Growth All living organisms begin in the same form: as a single cell. That cell will divide and the resulting cells will... Read More

Circulation

Blood Blood is composed of a liquid, plasma, and blood cells such as erythrocytes (red blood cells,) leukocytes (white... Read More

Population Regulation in an Ecosystem

Darwin focused some of this work in regards to the population size of a species, and what factors may affect them. He... Read More

Temperature Regulation in Animals

Control of Temperature in Homeotherms Animals capable of temperature regulation within a given range are deemed homeotherms... Read More

Plant Meristems and Growth

A common mistake that many people assume is that an increase in size means an increase in growth. This is not the case.... Read More

Bacillus megaterium

Definition noun An endospore forming rod-shaped bacterium recognized as an endophytes involved in the production of various... Read More

Leaflets

The word "leaflet" is defined as one of the individual leaf-like structures comprising a compound leaf. A quick look at a... Read More

Biuret test

In this article we will answer the following three questions: What is a Biuret Test?  What does biuret test for? What is... Read More

Glycocalyx

What is the Glycocalyx? The glycocalyx is a polysaccharide-based gel-like, highly hydrous cellular thin layer, covering... Read More

Development

1. The act of developing or disclosing that which is unknown; a gradual unfolding process by which anything is developed, as... Read More

Osteocyte

Osteocyte Definition The osteocyte is a mature bone cell. Other bone cell types are osteoprogenitor cells, osteoblasts, and... Read More

Sodium-24

Definition noun One of the many isotopes of sodium, with an atomic weight of 24 and 14.96 hour... Read More

Ontogenesis

(biology) the process of an individual organism growing organically; a purely biological unfolding of events involved in an... Read More

Leukocyte

Leukocytes, also called the white blood cells (WBCs), inhabiting our immune system are the cells that exhibit astonishing... Read More

Auxanographic method

Auxanographic method a method for the study of bacterial enzymes in which agar is mixed with the material (e.g., starch or... Read More

Diaphoresis

What is Diaphoresis? Diaphoresis is referred to excessive or profuse perspiration or sweating which may be due to... Read More

Fibroblast

The building block of living things is known as the cell. The cell contributes to many parts and functions of different... Read More

Titrate

titrate A chemistry lab technique used to find out the concentration of a substance (or concentrations of substances) by... Read More

Direct agglutination

Definition noun (1) An agglutination (macroscopic clumping) caused by one antibody. (2) A serological technique in which... Read More

Statolith

Definition noun, plural: statoliths (zoology) An otolith, i.e. a crystalline particle of calcium carbonate and a protein... Read More

Specimen

A specimen is a meticulously selected representative of a group that undergoes rigorous research studies to derive some... Read More

Lights’ Effect on Growth

Plants are the primary producers of energy in any ecosystem, meaning that they bring in new energy to it which supports... Read More