General Biology: Definitions and explanations page 5 PDF | Download eBooks
Learn general biology terms with definitions and explanations, biology terminologies (Page 5) for biology degree programs.
- What are Deuteromycetes?
Deuteromycota are also known as imperfect fungi. basically these are those fungi which do not fit ... - What is Development?
Living organisms undergo growth and development. every living organism begins life as a single cell. unicellular ... - What is Diabetes Mellitus?
Diabetes mellitus (dm), commonly known as diabetes, is a group of metabolic disorders characterized by high ... - What is Diaphragm?
The diaphragm is a thin skeletal muscle that sits at the base of the chest and ... - What is Diastole?
Diastole is the part of the cardiac cycle during which the heart refills with blood after ... - What are Diatoms?
Diatoms are a major group of algae, specifically microalgae, found in the oceans, waterways and soils ... - What are Dicots?
The dicotyledon plants are also called as dicots (or more rarely dicotyls). these are one of ... - What is Differential gene expression?
Differential gene expression is the expression of only those genes that are needed in the cell. ... - What is Differentiation?
Cellular differentiation is the process where a cell changes from one cell type to another. usually, ... - What is Diffusion?
Diffusion is the movement of molecules from an area of high concentration to an area of ... - What is Digestion?
Digestion is the breakdown of large insoluble food molecules into small water-soluble food molecules so that ... - What is Digestive system?
The human digestive system consists of the gastrointestinal tract plus the accessory organs of digestion (the ... - What is Dihybrid cross?
Dihybrid cross is a cross between two different lines/genes that differ in two observed traits. according ... - What are Dihybrids?
This term is used to describe a hybrid that is heterozygous for alleles of two different ... - What is Diploid?
A diploid cell is any cell that contains two complete sets of chromosomes. which means they ... - What is Directional selection?
Directional selection is common when a population's environment changes or when members of a population migrate ... - What is Disruptive selection?
A good example of disruptive selection is a population of black-bellied seed cracker finches in cameroon ... - What is DNA cloning?
Dna cloning is a molecular biology technique that makes many identical copies of a piece of ... - What is DNA excision repair?
Sometimes dna gets damaged due to certain chemicals or radiations like the uv rays or any ... - What is DNA ligase?
A ligase is an enzyme that can catalyze the joining of two large molecules by forming ... - What is DNA microarray?
A dna microarray (also commonly known as dna chip or biochip) is a collection of microscopic ... - What is DNA polymerase I?
There are three types of polymerase which having overlapping functions. dna polymerase i has several functions ... - What is DNA polymerase III?
There are three types of polymerase which having overlapping functions however dna polymerase iii has the ... - What is DNA polymerase?
Dna polymerase is an enzyme that has the important function of synthesizing dna molecules from deoxyribonucleotides ... - What is DNA sequencing?
Dna sequencing is the process of determining the nucleic acid sequence which is the precise order ... - What is DNA?
Dna stands for deoxyribonucleic acid. a dna molecule usually carries genetic information in an organism. it ... - What is Dominant allele?
An allele that has a dominant characteristic and it has the ability to express itself even ... - What is Double circulation?
In animals with double circulation, the pumps for the two circuits are combined into a single ... - What is Double fertilization?
Double fertilization is a complex fertilization mechanism of flowering plants (angiosperms). this process involves the joining ... - What is Double helix?
The term double helix basically refers to the secondary structure formed by the wounding of two ... - What is Down syndrome?
Down syndrome is an example of a trisomic disorder. down syndrome is the trisomy of chromosome ... - What is Drip irrigation?
Drip irrigation is a type of micro-irrigation system that has the potential to save water and ... - What is Duplication?
Gene duplication (or chromosomal duplication or gene amplification) is a major mechanism through which new genetic ... - What is Ecological species concept?
The ecological species concept is a concept of species in which a species is a set ... - What is Ectoderm?
Ectoderm is one of the three primary germ layers in the very early embryo. the other ... - What is Ectomycorrhizal fungi?
Ectomycorrhizal fungi are those that form a symbiotic relationship s a fungal symbiont with the roots ... - What is Ectothermic?
An ectotherm is an organism in which internal physiological sources of heat are of relatively small ... - What are Effector cells?
An effector cell is any of various types of cell that actively responds to a stimulus ... - What is Egg?
The egg is a structure that contains the zygote in which an embryo develops until it ... - What is Ejaculation?
Ejaculation is the release of semen from the male reproductory tract. the semen contains sperm and ... - What is Electrocardiogram?
Electrocardiography is the process of producing an electrocardiogram of the electrical activity of the heart using ... - What is Electromagnetic spectrum?
The electromagnetic spectrum is the range of frequencies of electromagnetic radiation and their respective wavelengths and ... - What is Electron transport chain?
An electron transport chain is a series of complexes that transfer electrons from electron donors to ... - What is Electronegativity?
The electronegativity of an atom depends upon the atomic number and the distance of the charged ... - What is Electroporation?
Electroporation, or electro permeabilization, is a microbiology technique in which an electrical field is applied to ... - What is Element?
An element is a matter that it made of one type of atoms, all of which ... - What is Elimination?
Elimination is also defecation. defecation is the final act of digestion, by which organisms eliminate solid, ... - What is Embryo sac?
Embryo sac is the female gametophyte of a seed plant consisting of a thin-walled sac within ... - What are Enantiomers?
An enantiomer is one of two stereoisomers that are mirror images of each other that are ... - What is Endergonic?
An endergonic reaction is a chemical reaction in which the standard change in free energy is ... - What is Endocrine System?
Endocrine system is responsible for the coordination of body activities such as digestion and metabolism. the ... - What is Endoderm?
Endoderm is one of the three primary germ layers in the very early embryo. cells migrating ... - What is Endodermis?
The endodermis is the central, innermost layer of cortex in some land plants. it is made ... - What is Endometriosis?
Endometriosis is a condition in which cells comparable to those in the the layer of tissue ... - What is Endometrium?
The endometrium is the internal epithelial layer of the uterus of a mammal.the layer thickens and ... - What are Endophytes?
An endophyte is an endosymbiont, often a bacterium or fungus, that lives within a plant for ... - What is Endoplasmic reticulum?
The endoplasmic reticulum is an important organelle found in eukaryotic cells. this structure is absent in ... - What is Endosperm?
The endosperm is a tissue produced inside the seeds of most of the flowering plants following ... - What is Endospore?
The original cell produces a copy of its chromosome and surrounds that copy with a tough ... - What is Endosymbiont theory?
This theory basically describes how a large host cell and ingested bacteria could easily become dependent ...