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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The discussion of the anatomy and evolution of eyes. Consider using the "vision" tag for questions regarding how the brain interprets information from the eyes.
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The theory by which mutations in the genetic code lead to differences from the previous phenotype that, should they be advantageous to an organism's survival to reproductive age, may be passed on to o…
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Any substance consumed to provide nutritional support for the body.
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The study of genomes, the entire set of genes in an organism.
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The study of blood, the blood-forming organs, along with blood diseases and their treatment.
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The area of physiology dealing with the production and effects of hormones.
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The use of methods from the physical sciences to aid in the study of biological systems.
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a method of replicating DNA exponentially from even a single molecule.
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used or the meaning of words as used in scientific literature. Questions should ideally include a link or quote as context for where the term was encountered.
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globular proteins that catalyze a biochemical reaction, increasing the overall rate by reducing activation energy. Most chemical reactions in a cell need enzymes in order to occur at rate…
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A change in an organism's genomic sequence.
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The study of the physiology of the nervous system, with emphasis on transcellular communication, and cellular and molecular processes involved in neural communication.
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Questions relating to biological theory or theoretical developments that deals with biological processes.
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The contractile tissue of animals derived from the mesodermal layer of embryonic germ cells.
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Models that analyse biological systems or processes using the tools of applied mathematics.
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harnessed to assemble organic compounds (esp. glucose) from inorganic carbon dioxide.
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Questions related to the study of the distributions and changes of allele frequency in a population.
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A single piece of DNA coiled and organized along with RNA and proteins found in the cell.
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Questions on the classification of biological organisms, and the methods used for classifying them.
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The process through which a biological organism grows to maturity. In certain contexts it can mean the changes the organism goes through over its entire lifetime.
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The scientific study of short- and long-term changes in the size and age composition of populations and the processes driving these changes.
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Questions relating to the study of birds.
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The study of animal behaviour.
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The biological process characterized by reversible unconsciousness, unresponsiveness to external stimuli and motor passivity.
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Virology deals with the study of viruses, infectious entities that require the machinery of a host cell to replicate.
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The study of the appropriate provisions required to sustain life in an organism or the provisions themselves.
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Questions pertaining to populations of organisms.
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a small infectious agent that can replicate only inside the living cells of an organism. Virology is the study of viruses.
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The process of biological aging or the state of an organism being biologically old.
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the process of growing and maintaining living cells in vitro.
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The set of actions performed by an organism within a given environment
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The process that produces a complementary strand of RNA from a section of DNA or (rarely) other RNA.
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Organs playing some role in digestion: the breaking down of food into smaller components that can be up-taken and used as source of energy or stucture.
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A selectively-permeable biological membrane that separates the interior of all cells from the outside environment.
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The branch of biology, chemistry, and medicine concerned with the study of the adverse effects of chemicals on living organisms.
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The study of the internal structure of organisms.