General Biology: Definitions and explanations page 1 PDF Book
Learn general biology terms with definitions and explanations, biology terminologies (Page 1) for biology degree programs.
- What is ABC hypothesis?
The abc model, which aims to describe the biological basis of the process from the perspective ... - What is Abiotic stress?
The biotic stress is the negative impact of non-living factors on the living organisms in a ... - What is Abortion?
Abortion is the termination of a pregnancy by removal or eviction of an embryo before it ... - What is Abscisic acid (ABA)?
Abscisic acid (aba) is a plant hormone. aba functions in many plant developmental processes, including seed ... - What is Abscisic Acid?
Aba has several functions. it inhibits growth, promotes stomatal closure during drought stress, promotes seed dormancy ... - What is Absorption spectrum?
Absorption spectrum is the spectrum of electromagnetic radiation transmitted through a substance, showing dark lines or ... - What is Absorption?
Absorption of nutrients mostly occurs in the small intestine. digestion and absorption begins in your mouth ... - What is Accessory fruit?
An accessory fruit is a fruit in which some of the flesh is derived not from ... - What is Acclimatization?
Acclimatization or acclimatization (also called acclimation or acclimatation) is the process in which an individual organism ... - What is Acid?
A substance that donates the protons and accepts electrons. when an acid is dissolved in aqueous ... - What is Acquired immunodeficiency?
Drugs used to fight autoimmune diseases or prevent transplant rejection suppress the immune system, leading to ... - What is Acrosome?
The acrosome is an organelle that develops over the frontal part of the sperm of many ... - What is Action spectrum?
An action spectrum is a graph of the rate of a physiological activity plotted against wavelength ... - What is Activation energy?
The activation energy is the energy that is required to start a reaction. this energy must ... - What is Activator?
Activator is a dna-binding protein that regulates one or more genes by increasing the rate of ... - What is Active immunity?
Active immunization is the induction of immunity after exposure to an antigen. antibodies are created by ... - What is Active site?
The active site is the region of an enzyme where substrate molecules bind and undergo a ... - What is Active transport?
Many proteins facilitate this process as it cannot happen on its own. the movement of molecules ... - What are Adaptations?
An adaptation is a characteristic of an organism that improves its chances of surviving and/or reproducing. ... - What is Adaptive evolution?
Evolution in general is a change in the heritable characteristics present in a population. several factors ... - What is Adaptive immunity?
The adaptive immune system, also known as the acquired immune system or sometimes as the specific ... - What is Adaptive radiation?
In evolutionary biology, adaptive radiation is a process in which organisms diversify rapidly from an ancestral ... - What is Addition rule?
When two events, a and b, are mutually exclusive, the probability that a or b will ... - What is Adhesion?
Adhesion is the ability to adhere to a surface. it can also be described as union ... - What is Adipose tissue?
Adipose tissue, or fat, is an anatomical term for loose connective tissue composed of adipocytes. its ... - What are Adrenal glands?
The adrenal glands are an example of endocrine glands. they produce a variety of hormones including ... - What is Aerobic respiration?
Aerobic respiration is the process that produces cellular energy by using oxygen. cells break down food ... - What is Aggregate fruit?
An aggregate fruit or etaerio is a fruit that develops from the merger of several ovaries ... - What is Alimentary canal?
Alimentary canal is the whole passage along which food passes through the body from mouth to ... - What are Alkaline vents?
In the absence of oxygen, alkaline vents are proposed to have acted as electrochemical flow reactors, ... - What is Allele?
An allele is a variant form of a gene. some genes have a variety of different ... - What is Allergy?
Allergies, also known as allergic diseases, are a number of conditions caused by hypersensitivity of the ... - What is Allopatric speciation?
An example of allopatric speciation is the water level in a lake that subsides, resulting in ... - What is Alloploidy?
The allopolyploid nucleus also has multiple copies of the genome. this happens when more than the ... - What is Allosteric regulation?
Allosteric regulation is basically the regulation of an enzyme by binding an effector molecule at a ... - What are Alternation of generations?
Alternation of generations, which is also known as metagenesis, is the type of life cycle that ... - What is Alternative RNA splicing?
Alternative splicing, or differential splicing, is a regulated process during gene expression that results in a ... - What is Alveoli?
The pulmonary alveolus , which are also called alveoli, is a hollow cavity found in the ... - What is Amino acid?
An organic molecule that is the building block of all proteins. it is an organic molecule ... - What are Aminoacyl-tRNA synthetases?
An aminoacyl-trna synthetase, also called trna-ligase, is an enzyme that attaches the appropriate amino acid onto ... - What is Amniocentesis?
Sometimes the fetus can show signs of a disease or a disorder. to screen that, some ... - What are Amoebocytes?
An amebocyte or amoebocyte is a mobile cell in the body of invertebrates including echinoderms, mollusks, ... - What is Amphipathic?
The phospholipid is a classical example of an amphipathic molecule that has both the regions. they ... - What is Amylase?
Amylase is a protein made by our pancreas and also by the glands in and around ... - What are Anabolic pathways?
Anabolism is the set of metabolic pathways that construct molecules from smaller units. these reactions require ... - What is Anaerobic respiration?
Anaerobic respiration is respiration using electron acceptors other than molecular oxygen (o2). although oxygen is not ... - What is Analogous features?
He term analogous structures pertain to the various structures in different species having the same function ... - What is Analogy?
In biology, similarity of function and superficial resemblance of structures that have different origins are called ... - What is Anatomy?
Anatomy is the branch of biology concerned with the study of the structure of organisms and ... - What is Aneuploidy?
Aneuploidy is the presence of an abnormal number of chromosomes in a cell, for example a ... - What are Angiosperms?
The flowering plants are also known as angiosperms. angiosperms are the most diverse group of land ... - What is Anhydrobiosis?
The term anhydrobiosis is most usually used for the desiccation acceptance or tolerance seen in certain ... - What is Anion?
A negatively charged ion is a anion. if kept in a electric field, these ions will ... - What is Anther?
The part of a stamen that contains the pollen. it is crucial in the reproduction of ... - What is Antibody?
Antibodies are secreted proteins from the b cells. the antibodies have the same y-shaped structure as ... - What is Anticodon?
The anticodon region of a transfer rna is a sequence of three bases that are complementary ... - What is Antigen presentation?
Antigen presentation describes a vital immune process which is essential for t cell immune response triggering. ... - What is Antigen receptor?
An antigen receptor is basically an antibody protein that is not secreted but is anchored to ... - What is Antigen?
The term antigen refers to any molecule or a linear molecular fragment after processing the native ... - What is Antiparallel?
In terms of biology, two biopolymers are antiparallel if they run parallel to each other but ...