66 results found

Search Results for: modification

Modification

modification 1. A nonhereditary change in an organism; e.g., one that is acquired from its own activity or environment. 2. A... Read More

Modification enzyme

modification enzyme (Science: enzyme molecular biology) An enzyme that introduces minor bases into dNA or rNA or that alters... Read More

Natural selection

Natural Selection Definition What is natural selection in biology? Natural selection is defined as a process in nature... Read More

Glycolysis

What is Glycolysis and Why is it Important? Glycolysis is a metabolic pathway by which the 6-carbon molecule of glucose is... Read More

Golgi apparatus

Definition noun Gol·gi ap·pa·rat·us, ˈgɔl dʒi ˌæpəˈreɪtəs (cell biology) An organelle that is comprised of... Read More

Nucleosome

Nucleosome Definition Every organism is made of deoxyribonucleic acid, also known as DNA. DNA is made up of numerous... Read More

Imprinting

What does imprinting mean? Have you watched the TV cartoon show “Tom and Jerry” with an episode of a duck and its... Read More

Genetic Information and Protein Synthesis

Genetic Code Genes are sequences of DNA nucleotides that carry and transmit the information specifying amino acid sequences... Read More

Tropocollagen

Definition noun, plural: tropocollagens A single collagen molecule; a molecular structure that makes up a collagen fiber,... Read More

Ribonucleic acid

Ribonucleic Acid Definition noun (uncountable), ribonucleic acids ri·bo·nu·cle·ic ac·id, raɪboʊnjuːkliːɪk... Read More

Protein synthesis

Protein synthesis is the process of creating protein molecules. In biological systems, it involves amino acid synthesis,... Read More

Group translocation

Group Translocation Definition Just like your “home” is a private place where you and your comfort are maintained due... Read More

Parthenogenesis

To reproduce, by definition, means to produce new offspring. The process is referred to as reproduction, which is one of the... Read More

Enzyme

Reviewed by: Todd Smith, PhD Definition noun plural: enzymes en·zyme, ˈɛnzaɪm (biochemistry) A... Read More

Glycosylation

Definition noun A biochemical process where a glycan attaches to a protein, a lipid, or other organic molecule, especially... Read More

Process

Process Definition What is a process? In biology, a process (plural: processes) means any of the various biological... Read More

Herbivore

Herbivore Definition A herbivore is the primary consumer of the food chain that usually occupies the second trophic level... Read More

GERL

GERL Definition GERL is the acronym for Golgi - Endoplasmic Reticulum - Lysosome complex, a system found in the cell and... Read More

Disruptive Selection

An evolutionary process known as disruptive selection (or disruptive natural selection) causes a population to become... Read More

Positive feedback

Positive Feedback Definition Each mechanism of the body like temperature, blood pressure, and levels of specific nutrients... Read More

Phyletic gradualism

Definition noun A theory stating that evolutionary change happens slowly, steadily and gradually in an attempt of the... Read More

Deoxyribonucleic acid

Deoxyribonucleic Acid (DNA) Definition A nucleic acid refers to any of the group of complex compounds made up of linear... Read More

Hepatocyte

Definition noun, plural: hepatocytes Any of the large, polygonal-shaped cells in the liver. Supplement Hepatocytes are the... Read More

Endomembrane system

Ever wondered how biomolecules are made within the cell and then they are released outside the cell for use by the body?... Read More

Polygenic inheritance

Polygenic inheritance refers to the kind of inheritance in which the trait is produced from the cumulative effects of many... Read More

Sugar-phosphate backbone

Definition noun A structural component of DNA that consists of 5-deoxyribose sugars and phosphate groups involved in... Read More

Polynucleotide

Definition noun plural: polynucleotides pol·y·nu·cle·o·tide, ˌpɒlɪˈno͞o′klē-ə-tīd A biopolymer comprised of... Read More

Mesophile

Definition noun, plural: mesophiles An organism that lives and thrives at moderate temperatures Supplement A mesophile is an... Read More

Psychrophile

Definition noun, plural: psychrophiles An organism that thrives in cold temperatures, i.e. ranging from −20 °C to +10... Read More

Isomaltulose

Definition noun plural: isomaltuloses A disaccharide comprised of a glucose monomer and a fructose monomer joined by... Read More

Glycoconjugate

Definition noun, plural: glycoconjugates A carbohydrate chemically linked to another compound, e.g. lipid or... Read More

Nuclear body

Definition noun plural: nuclear bodies nu·cle·ar bod‧y, ˈnjuː.kli.ər ˈbɒdi Any of the prominent non-membraned,... Read More

Plant Metabolism

Introduction Plants are responsible for incredible feats of molecular transformation. The processes are always being... Read More

Genetic Control – On and Off Genes

Reviewed by: Mary Anne Clark, Ph.D. This lesson looks at the various factors involved that affect growth and... Read More

Genetic Engineering Advantages & Disadvantages

  Through genetic engineering, scientists are able to move desirable genes from one plant or animal to another or... Read More

Non-Mendelian Inheritance

Reviewed by: Mary Anne Clark, Ph.D. The inheritance patterns seen in Mendel's monohybrid and dihybrid crosses... Read More

Diarthrodial joint

What is a diarthrodial joint? A diarthrosis joint is a freely moving joint characterized by its mobility and joint cavity... Read More

System

A system pertains to interdependent or interrelated objects comprising and functioning as a whole. In biology, it may refer... Read More

Mutagen

Mutagen Definition What is a mutagen? A mutagen is a substance or agent that causes DNA impairment that results in the... Read More

Isomaltose

Definition noun plural: isomaltoses i·so·mal·tose, aɪsoʊˈmɔːltəʊz A disaccharide formed from the combination of... Read More