General Biology: Definitions and explanations page 2 PDF | Download eBooks
Learn general biology terms with definitions and explanations, biology terminologies (Page 2) for biology degree programs.
- What is Apical bud?
Plants that have apical buds usually have the tendency to grow just the terminal bud on ... - What is Apical dominance?
Apical dominance is the phenomenon whereby the main and the thicker central stem of the plant ... - What are Apical meristems?
Apical meristems are the completely undifferentiated meristems in a plant. these differentiate into three kinds of ... - What is Apoplast?
Inside a plant, the apoplast is the space outside the plasma membrane within which material can ... - What is Apoplastic route?
Inside a plant, the apoplast is the space outside the plasma membrane within which material can ... - What is Apoptosis?
Apoptosis is a type of planned death of the cell that occurs in multicellular organisms. several ... - What is Appendix?
The appendix is a small, pouch-like sac of tissue that is located in the first part ... - What are Aquaporins?
Aquaporins are integral membrane proteins that serve as channels in the transfer of water, and in ... - What is Aqueous Solution?
Any solution that has the water as a solvent is called an aqueous solution. as water ... - What are Aquifers?
An aquifer is an underground layer of water-bearing permeable rock, rock fractures or unconsolidated materials. groundwater ... - What is Arbuscular mycorrhizae?
An arbuscular mycorrhiza is a type of mycorrhiza in which the symbiont fungus penetrates the cortical ... - What are Arteries?
An artery (plural arteries) is a blood vessel that takes blood away from the heart to ... - What are Arterioles?
An arteriole is a small-diameter blood vessel in the microcirculation that extends and branches out from ... - What is Artificial selection?
Artificial selection is also termed as selective breeding. the breeding of plants and animals is done ... - What is Asexual reproduction?
Asexual reproduction is a type of reproduction by which offspring arise from a single organism, and ... - What is Aster?
An aster is a cellular structure shaped like a star, comprising of a centrosome and its ... - What is Asymmetrical cell division?
A good example of asymmetric cell division is the formation of guard cells that typically involves ... - What is Atherosclerosis?
Atherosclerosis is a disease in which the inside of an artery narrows due to the build ... - What is Atom?
An atom is the smallest unit of all ordinary matter. it has the properties of a ... - What is Atomic nucleus?
An atomic nucleus is the core of an atom is consists of protons and neutrons. these ... - What is Atomic number?
The atomic number or proton number, denoted by the symbol z, of a chemical element is ... - What is ATP synthase?
The atp synthase is a mitochondrial enzyme that is present in the inner membrane. it has ... - What is Atria?
The atrium is the upper chamber through which blood enters the heart. there are two atria ... - What is Atrioventricular valve?
These are the mitral and tricuspid valves, which are situated between the atria and the ventricles ... - What is Autoimmune response?
Such a loss of self-tolerance has many forms. for example in systemic lupus erythematosus, commonly called ... - What is Autoploidy?
An autopolyploid nucleus is a type of polyploid nucleus which, is formed when the single cell ... - What are Autosomes?
All the chromosomes other than the sex chromosomes are called the autosomes. the dna in autosomes ... - What are Autotrophs?
An autotroph or primary producer, is an organism that produces complex organic compounds from simple substances ... - What is Auxin?
Auxin has multiple functions. it stimulates stem elongation (low concentration only) promotes the formation of lateral ... - What is Axillary bud?
The axillary bud (or lateral bud) is an embryonic shoot located in the axil of a ... - What is Bacteriophage?
Virus not only attack the animal or human cells but they can also attack bacteria. for ... - What is Bacteroid?
The outer host-cell derived symbiosome membrane encloses a space called the symbisome space or the peribacteroid ... - What is Balancing selection?
Balancing selection refers to a number of selective processes by which multiple alleles are actively maintained ... - What is Bark?
Bark is the outermost layers of stems and roots of woody plants. plants with bark include ... - What is Barr body?
A barr body is the inactive x chromosome in a female somatic cell, rendered inactive in ... - What is Base?
N chemistry, bases are substances that, in aqueous solution, release hydroxide ions, are slippery to the ... - What is Benign tumor?
A benign tumor is not a malignant tumor which is basically the harmful one and leads ... - What is Bilateral symmetry?
In bilateral symmetry (also called plane symmetry), only one plane, called the sagittal plane, divides an ... - What is Bile?
Bile is a dark green to yellowish brown fluid, produced by the liver of most vertebrates, ... - What is Binomial?
Binomial nomenclature, also called binominal nomenclature or binary nomenclature, is a formal system of naming species ... - What are Bioenergetics?
Bioenergetics is a field in biochemistry and cell biology that concerns energy flow through living systems. ... - What are Biofilms?
A biofilm comprises any consortium of microorganisms in which cells stick to each other and often ... - What are Biofuels?
A biofuel is a fuel that is produced through contemporary biological processes, such as agriculture and ... - What is Biogeography?
Biogeography is the study of the distribution of species and ecosystems in geographic space and through ... - What are Bioinformatics?
Bioinformatics is an interdisciplinary field that develops methods and software tools for understanding biological data it ... - What is Biomass?
Biomass is plant or animal material used for energy production, heat production, or in various industrial ... - What is Bioremediation?
Bioremediation is a process used to treat contaminated media, including water, soil and subsurface material, by ... - What is Biotechnology?
Biotechnology is the broad area of biology involving living systems and organisms to develop or make ... - What is Biotic stress?
Biotic stress is stress that occurs as a result of damage done to an organism by ... - What is Blastula?
The blastula is a hollow sphere of cells which are referred to as blastomeres. they surround ... - What is Blood?
Blood is a body fluid in humans and other animals that delivers necessary substances such as ... - What is Body cavity?
A body cavity is any fluid-filled space in a multicellular organism other than those of vessels ... - What is Bolus?
A bolus is a ball-like mixture of food and saliva that forms in the mouth during ... - What is Bone?
Bone-forming cells called osteoblasts deposit a matrix of collagen. calcium, magnesium, and phosphate ions combine into ... - What is Bottleneck effect?
A population bottleneck or genetic bottleneck is a sharp reduction in the size of a population ... - What are Brassinosteroids?
Promote cell expansion and cell division in shoots; promote root growth at low concentrations, inhibit root ... - What is Breathing?
Breathing is the process of moving air into and out of the lungs to facilitate gas ... - What is Bronchi?
A bronchus is a passage of airway in the respiratory system that conducts air into the ... - What are Bronchioles?
The bronchioles or bronchioli are the passageways by which air passes through the nose or mouth ... - What is Buffer?
A buffer is used when the ph of a solution needs to be kept constant. its ...