435 results found

Search Results for: material

Genetic material

Genetic Material Definition What is genetic material? Genetic material is the hereditary substance in the cell. It carries... Read More

Material

Material 1. Consisting of matter; not spiritual; corporeal; physical; as, material substance or bodies. The material... Read More

Endocytosis

Endocytosis Definition What is endocytosis in biology? Endocytosis is a cellular process by which a cell internalizes any... Read More

Capsid

Capsid Definition A capsid is a three-dimensional proteinaceous capsular shell around a virus that encloses the viral... Read More

Soils

Where a plant grows and what resources are available to it is of vital importance to the life of a plant. The soil type and... Read More

Genome

Genome Definition What is a genome? As defined in biology, a genome is a complete set of deoxyribonucleic acid (DNA) within... Read More

Organism

An organism refers to a living thing that has an organized structure, can react to stimuli, reproduce, grow, adapt, and... Read More

Gamete

Definition of Gamete What is a gamete? A gamete is the mature reproductive or sex cell that contains a haploid number of... Read More

Inoculum

Inoculum Definition Inoculation is a term often heard in microbiology, one of the branches of biology that deals with the... Read More

Prophase

Prophase is the first stage of mitosis; the very first step in this crucial process of the M-phase of the cell cycle. Now as... Read More

Nucleus

In cell biology, the nucleus is the large, membrane-bounded organelle that contains the genetic material in the form of... Read More

Chromosome

Chromosomes Definition Chromosomes are the thread-like structure present in the nucleus of plant and animal cells.... Read More

Substrate

Substrate Definition What is a "substrate"? The underlying substances or layers are termed as substrate. The definitions of... Read More

Filtration

Filtration Definition What is filtration? Filtration is separating a solid from a fluid through a porous material that... Read More

Bacteria

Bacteria Definition What are bacteria? What is the definition of bacteria in biology? Bacteria are defined as organisms... Read More

Nucleoid

Definition noun plural: nucleoids nu·cle·oid, ˈnjuːklɪˌɔɪd The portion within a prokaryotic cell where the... Read More

Alimentary canal

Definition of Alimentary canal What is the alimentary canal? The alimentary canal is a muscular hollow continuous tubular... Read More

Sexual reproduction

Sexual reproduction is a mode of reproduction involving the fusion of haploid female gamete (egg cell) and haploid male... Read More

Unicellular

Unicellular organisms are organisms consisting of one cell only that performs all vital functions including metabolism,... Read More

Cytokinesis

The cell cycle of eukaryotes is a cyclical series of biological events that certain asexual cells go through. The cell cycle... Read More

Chromosomal crossover

Chromosomal Crossover Definition noun A process occurring during meiosis wherein homologous chromosomes pair up and... Read More

Centrosome

Centrosome Definition What is a centrosome? The centrosome is considered to be the main microtubule-organizing... Read More

Digestion and Absorption of Food

The gastrointestinal (GI) system includes the gastrointestinal tract (mouth, pharynx, esophagus, stomach, small intestine,... Read More

Biosphere

What is biosphere? The biosphere is that part of the Earth where living things thrive and live. It is the portion of the... Read More

Inoculation

Inoculation Definition In Immunology, inoculation is defined as the process of introducing an antigenic substance or... Read More

Egestion

Egestion is the act or process of voiding or discharging undigested food as faeces. To egest means to discharge undigested... Read More

Decomposer

Decomposer Definition The organisms that carry out the process of decay or break down of the dead organism are known as... Read More

Chromatin

Chromatin Definition What is chromatin in a cell? Chromatin is a complex of nucleic acids (e.g. DNA or RNA) and proteins... Read More

Organic matter

Definition noun Any of the carbon-based compounds found in nature Supplement Organic matter pertains to any of the... Read More

Omnivore

Organisms need to eat food in order to gain energy and survive in the ecosystem. Often, living things are categorized by how... Read More

Living things

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

Vector

Vector Definition When one thinks of vectors one may think of many different things. This is because a vector can be... Read More

Permeability

Permeability Definition What is permeability? In earth science, its definition is this: "the ability of any material such... 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

Eubacteria

Eubacteria are prokaryotic microorganisms consisting of a single cell lacking a nucleus and containing DNA is a single... Read More

Herbivore

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

Chimera

When we learned about the basic genetics of biological life, we came to know that almost all the cells of an individual have... Read More

Naked virus

Viruses are infectious entities with size ranges between 20 to 400 nanometers. The mammoth-sized virus would be about the... Read More

Organelle

The cell is regarded as the structural, functional, and biological unit of all organisms. It is a membrane-bound structure... Read More

DNA Structure & DNA Replication

Previous pages in this tutorial have described the basics of a cell, the energy required by these cells and how energy is... Read More