18 results found

Search Results for: senescence

Senescence

Senescence Definition Senescence is defined as biological aging. In cell biology, it refers to the cell wherein it is no... Read More

Gerontoplast

Definition noun, plural: gerontoplasts A plastid that forms from chloroplast during senescence Supplement Plastids are... Read More

Degenerate

Degenerate means to become worse or less of its kind or former state. In biology, it means an entity performs the same... Read More

Hayflick phenomenon

Definition noun The phenomenon characterized by the limited number of times a normal cell population would divide... Read More

Plant

Plant Definition (botany) Any of the eukaryotic organisms of the biological kingdom Plantae, characterized by being... Read More

Biological clock

Definition noun, plural: biological clocks Any of the various mechanisms that regulate biological rhythms Supplement A... Read More

Living things

Living Things Definition A living things pertains to any organism or a life form that possesses or shows the... Read More

Biomolecule β-Hydroxybutyrate – key to vascular youth?

One of the hallmarks of old age is vascular aging. Researchers found that a biomolecule, β-Hydroxybutyrate (BHB), can serve... Read More

Abscission

Definition noun (botany) The normal shedding of a senescent plant part or organ (e.g. old leaf or ripe fruit) (zoology) The... Read More

Pheromone

Pheromone Definition A pheromone is a chemical released by an organism and serves as a behavior-modifying agent. It means... Read More

Animal

Animal Definition An animal (plural: animals) refers to any of the eukaryotic multicellular organisms of the biological... Read More

Reactive oxygen species

Definition noun Chemically reactive molecules and ions of oxygen with an unpaired electron Supplement Reactive oxygen... Read More

Autophagy

Definition noun A programmed cell death characterized by biochemical events leading to self-digestion through the... Read More

Apoptosis

Definition noun, plural: apoptoses A programmed cell death involving an ordered sequence of biochemical events that result... Read More

Ethylene

Ethylene (Science: chemical plant biology) plant growth substance (phytohormone, plant hormone), involved in promoting... Read More

Pleiotropy

Pleiotropy Definition When one single gene starts affecting multiple traits of living organisms, this phenomenon is known... Read More

Leaf

Leaf Definition (botany) A plant organ that is specialized for photosynthesis. Collectively, it constitutes foliage.... Read More

Smooth endoplasmic reticulum

Smooth Endoplasmic Reticulum Definition Smooth endoplasmic reticulum (sER) is (a part of) endoplasmic reticulum that is... Read More