A tag is a keyword or label that categorizes your question with other, similar questions. Using the right tags makes it easier for others to find and answer your question.

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Questions pertaining to red blood cells, or erythrocytes, the most common type of blood cell that is responsible for delivering oxygen throughout the body.
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the study of organisms that lived in prehistoric times.
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A region of repeating DNA at the end of a chromosome that protects the chromosome from decaying.
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A measure of how hot or cold something is, measured in degrees Fahrenheit or Celsius, or Kelvin.
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a polyphyletic group of unicellular fungi. Usually the term yeast is used synonymously with baker's yeast - Saccharomyces cerevisiae.
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The timing of key events in an organism's lifetime, including development, reproduction and death.
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A rapid change in the membrane potential of excitable cells such as neurons and muscles; this usually involves a steep rise (depolarization) followed by a steep fall in membrane potential (repolariza…
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a biopolymer mostly made from keratin, which grows from the skin. Hair is exclusively found in mammals.
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Fruits develop from the flower of plants and hold the seeds. They are the way of plants to distribute their seeds.
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A state in which an organism or a cellular system, as defined by its full set of functionality, ceases to exist (i.e., most of the functions are irreversibly lost).
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Communal living, cooperation in care of young, and/or division of labor within animal species.
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The process in which a protein folds into a three-dimensional shape to achieve proper functioning.
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Questions pertaining to the processes by which new species arise.
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a molecular target for a chemical signal such as a neurotransmitter, hormone, or drug. Binding of the signal to the receptor initiates or modulates behaviour in the receiving cell.
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The application of dynamic systems and game theory to evolving populations in biology, economics, and social sciences. It is particularly well suited for studying social dilemmas like the evolution of…
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The administration of antigenic material to stimulate the immune system of an individual to develop adaptive immunity to a disease.
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The genetic alteration of a cell resulting from the direct uptake, incorporation, and expression of exogenous genetic material from its surroundings.
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Questions looking for clarifications or definitions of biological terminology.
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The laboratory technique involving the extraction of DNA from a cell in a pure form.
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The study of how biological life arises from inorganic matter through natural processes, and the method by which life on Earth arose.
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Ionizing electromagnetic waves, usually harmful to most biological beings.
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Biology dealing with study of reproductive process, especially in higher animals. Closely related to reproductive endocrinology.
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Chemistry relating to carbon-containing compounds. Should relate to biology as opposed to being purely about chemistry.
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Electromagnetic radiation, specifically the range of frequencies visible to humans ("visible light").
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enyzmes (usually derived from bacterial sources) which cleave DNA at defined "restriction" sites.
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designed to prevent old damaged cells from mutating into neoplastic (cancer) cells.
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a single-stranded RNA virus which reproduces in human CD4-positive cells, which are primarily T-helper lymphocytes and macrophages. HIV is the causative patho…
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Questions regarding organic compounds required by an organism as a vital nutrient in limited amounts.
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Fluorescent microscopy uses the emissions of fluorescently labelled probes to generate an image.
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Questions pertaining to fruit flies of the genus *Drosophila*.
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Copying the genome for the purpose of reproduction.