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A-B-C-D-E-F-G-H-I-J-K-L-M-N-O-P-Q-R-S-T-U-V-W-X-Y-Z
A
- ABC model of the control of flowering
- abl
- [gene]
- ABO blood groups
- ABP1
- Auxin-binding protein 1
- Abscisic acid (ABA)
- Plant hormone.
- Abscission
- Absolute temperature
- Absorption spectrum
- Electromagnetic spectrum whose intensity at each wavelength is a measure of the amount of energy at that wavelength that has passed through a selectively absorbing substance.
- Abyssal plain
- ACE inhibitors
- Acetylcholine
- [at neuromuscular junction]
- Acetyl-CoA
- Acid
- Acid rain
- Acrosome
- Actinomycetes
- ACTH
- adrenocorticotropic hormone
- Actin filaments
- [Discussion] [in cytokinesis] [in skeletal muscle]
- Action potential
- Action spectrum
- Rate of physiological activity plotted against wavelength of light.
- Active transport
- Activins
- [in embryonic development] [sex hormones]
- Acute lymphoblastic leukemia (ALL)
- Acute myelogenous leukemia (AML)
- Adaptation
- [of sense receptors] [evolutionary]
- Adaptive radiation
- Addison's disease
- Adenine
- Adeno-associated virus (AAV).
- As vector for somatic gene therapy.
- Adenomatous Polyposis Coli (APC) gene
- Adenosine deaminase (ADA)
- and severe combined immunodeficiency (SCID)
- Adenylyl cyclase
- [and peptide hormones] [and odorant receptors]
- ADH
- antidiuretic hormone
- Adherens junctions
- Adhesion
- Force of attraction between unlike molecules.
- Adipose tissue
- Fat. [More] [secretion of leptin by]
- Adrenal glands
- [Hormones of]
- Adrenaline
- Adrenocorticotropic hormone
- ACTH
- Advanced Waste Treatment
- Adventitious root
- Root that arises from a stem or leaf.
- Aerobic
- Requiring the presence of free oxygen.
- AGAMOUS (AG)
- Agent Orange
- [dioxin content]
- Agnatha
- jawless fishes
- Agonist
- Drug that mimics the action of another.[Example]
- AIDS
- Acquired immune deficiency syndrome.
- Air
- [composition of] [pollution]
- Alanine
- Aldosterone
- Algae
- [Brown] [Green] [Golden] [Red] [culture medium for]
- ALH84001
- Martian meteorite. [More]
- Alkylation
- Addition of a carbon-containing group, such as a methyl or ethyl group, to another molecule.
- Allantois
- Allele
- Alternative version of a gene. [in Mendel's peas] [in a three-point cross] [RFLPs] [hemoglobin beta chain] [and protein polymorphisms]
- Allergen
- An antigen that provokes an allergic response.
- Allergy
- Allograft]
- Allopatric speciation
- Allosteric
- Refers to a change in the properties (usually including shape) of a protein following the binding of another molecule to the protein. [Example]
- Allozyme
- Alpha helix
- [in proteins]
- Alpha1-Antitrypsin Deficiency (A1AD or Alpha1)
- Alpha motor neurons
- Alternation of generations
- [Discussion] [in ferns] [in mosses]
- Alternative splicing
- Alu element
- Aluminum
- Alvarez, L.
- Alveoli
- Alzheimer's disease
- Ames Test
- Amino acids
- Aminoglycosides
- Aminopeptidase
- Amino terminal
- AML
- acute myelogenous leukemia
- Ammonia
- [in nitrogen cycle] [in urea cycle]
- Amniocentesis
- Amnion
- in humans
- Amniota
- AMPA receptors
- Amphetamines
- Amphibians
- Amphioxus
- Amphiphilic
- Used to describe molecules containing both polar (hydrophilic) and apolar (hydrophobic) groups. Sodium stearate (a soap) is amphiphilic.
- Amygdala
- Amylase
- [pancreatic amylase]
- Amyloid
- Amylopectin
- Amylose
- Anabolic steroid
- Anabolism
- Anaerobic
- Not requiring the presence of free oxygen.
- Analgesics
- Analogous
- Of structures (e.g., molecules, organs) in different species having similar function(s) but inherited from different precursors.
- Anaphase
- [mitosis][meiosis]
- Anaphase Promoting Complex (APC)
- Anaphylaxis
- [local] [systemic]
- Androgen
- Anemia
- [immune hemolytic] [pernicious] [sickle-cell]
- Anesthetic
- Aneuploid
- Having one or more extra (or fewer) chromosomes than the normal diploid (2n) set (e.g., 2n+1, 2n-1). [trisomy 21] [X chromosomes]
- Angelman syndrome
- Angiosperms
- The flowering plants. [Life cycle] [Evolutionary relationships]
- Angiostatin
- Angiotensin
- Angiotensin converting enzyme (ACE)
- Angstrom (Å)
- Animal
- [cells] [invertebrate] [tissues] [vertebrate]
- Aniridia
- [human gene]
- Annelida
- ANP (atrial natriuretic peptide)
- Antenna pigments
- Antennapedia (Antp)
- [encoded homeodomain]
- Anther
- Antheridia
- [in ferns] [in mosses]
- Anthozoa
- Anthrax
- Antibiotics
- Antibody
-
- [Structures] [classes] [how their diversity is created]
- Anticodon
- Antidepressant drugs
- Antidiuretic hormone (ADH)
- Antigen
- [Antigen receptors on B and T cells]
- Antigenic determinant
- A part of an antigen to which the antibody binds. Also called an epitope.
- Antigenic drift
- of influenza viruses
- Antiport pump.
- Antisense strand
- The strand of DNA used as the template for synthesizing RNA.
[More] [Antisense oligodeoxynucleotides (ODNs)] [Antisense RNA]
- Antiserum
- Serum containing induced antibodies. [Example]
- Antithrombin III
- Antithymocyte globulin (ATG)
- Antitoxin
- Aorta
- APETALA
- Apical dominance
- Apis mellifera
- bee dances
- Apolipoprotein B
- [and cholesterol metabolism] [and RNA editing]
- Apomixis
- Reproduction by seeds that have developed asexually rather than sexually.
- Apomorphic
- Apoplast
- Apoptosis
- Programmed cell death. [Discussion]
- Aquaporin
- Aqueous humor
- Aquifer
- A layer in the earth that is saturated with water.
- Arabidopsis thaliana
- [diploid number]
[genome size]
- Arachidonic acid
- Arachnida
- Archaea
- Archegonia
- [in ferns] [in mosses]
- Archenteron
- ARF1
- Auxin response factor 1
- Arginine
- [substrate for NO synthases]
- Arteries and Arterioles
- Arteriosclerosis
- Arthropods
- Ascomycetes
- Ascorbic acid (vitamin C)
- Ascus
- Asexual reproduction
- Formation of a new individual from the cell(s) of a single parent.
- Asparagine
- Aspartic acid
- Assortative mating
- Asthma
- Atherosclerosis
- [and cholesterol]
- ATM
- ataxia telangiectasia mutated
- Atom
- Atomic number
- Atomic weight unit
- One-twelfth the weight of an atom of carbon-12. Also called the dalton. [More]
- Atopy
- ATP (adenosine triphosphate)
- [structure][yield in cellular respiration]
- ATP synthase
- [in photosynthesis][in mitochondria]
- Atrial natriuretic peptide(ANP)
- Atrio-ventricular (A-V) node
- Atrium
- Autocrine
- Refers to the influence on a cell of molecules synthesized by the same cell. [More]
- Autoimmune disease
- Disease characterized by the mounting of an immune response against constituents of an individual's own tissues. Some examples: [Insulin dependent diabetes mellitus (IDDM)] [Immune hemolytic anemia] [Immune thrombocytopenic purpura] [Myasthenia gravis (MG)] [Multiple sclerosis (MS)] [Rheumatoid arthritis] [Systemic lupus erythematosus (SLE)] [Thyrotoxicosis (Graves' disease)]
- Autonomic nervous system
- Autoradiography
- Autosome
- Any chromosome that is not a sex chromosome.
- Autotrophic
- Capable of synthesizing organic molecules from inorganic raw materials.
- Photoautotrophs - plants, algae, and some bacteria - use light as the source of the needed energy. [Photosynthesis]
- Chemoautotrophs use the energy secured by oxidizing some inorganic substance in their surroundings. Characteristic of certain bacteria and archaea.
- Auxin
- [actions] [and tropisms] [differential action on roots and shoots]
- Avena test
- Avery, O. T.
- Avogadro's number
- Axon
- [axon hillock]
- Azathioprine
- AZT
- Azidodeoxythymidine. Also called zidovudine.