BIO - TERMS - GENERAL PT 10 Flashcards
Abscissa
The horizontal scale on a graph.
actual yield
The amount of product actually produced by a chemical reaction.
adrenal medulla
The inner segment of the adrenal gland, innervated by preganglionic sympathetic fibers; releases epinephrine.
aflatoxin
A carcinogenic toxin produced by Aspergillus flavus.
algal bloom
An abundant growth of microscopic algae producing visible colonies in nature.
alloy
A metallic material that contains more than one element.
amphiarthrosis
(am′fē-ar-thrō′sis) A slightly movable joint.
Angiosperms
Flowering plants.
anterior cingulate cortex
Region of the cerebral cortex, just anterior to the descending limb of the corpus callosum, which has been implicated in the pathophysiology of mood disorders.
antiretroviral
A drug used to treat HIV infection.
ApoC-III
An apolipoprotein that inhibits lipoprotein lipase.
Arbuscular mycorrhiza
Symbiosis between autotrophic plant roots and obligatory symbiotic fungi.
articular
(ar-tik′ū-lăr) Relating to a joint.
ataxia
Abnormally uncoordinated and inaccurate movements, often associated with cerebellar dysfunction.
auricle
(aw′ri-kl) The external ear; also flaplike extensions on the anterior part of each atrium of the heart.
axon hillock
A swelling of the axon where it joins the soma.
basal telencephalon
The region of the telencephalon lying deep in the cerebral hemispheres.
Beriberi
Thiamine deficiency, with severe neuromuscular weakness.
Binomial expansion
Exponential multiplication of an expression consisting of two terms connected by a plus (+) or minus (−) sign, such as (a + b)n.
Biomagnification
Increasing concentrations of substances with each trophic level.
Boat cyclohexane
A conformation of cyclo hexane that bears a slight resemblance to a boat. Boat cyclohexane has no angle strain but has a large number of eclipsing interactions that make it less stable than chair cyclohexane.
Boyle’s law
The law that states that volume of a gas is inversely proportional to its pressure (V ∝ 1/p)
bronze
An alloy of copper and tin that has been used for thousands of years.
calorimetry
The experimental procedure used to measure the heat that evolves in a chemical reaction.
Cardiac glycoside
A steroidal glycoside that increases the strength or rhythm of the heart beat.
caudal
An anatomical reference meaning toward the tail, or posterior.
ceramics
Inorganic metallic solids that are prepared from powders usually mixed with water, formed into the desired shape, and then heated.
channelrhodopsin-2 (ChR2)
A light-sensitive cation channel, originally isolated from green algae, which can be expressed in neurons and used to control their activity using light.
Chemical resistance
Secondary metabolites mediate resistance.
cholelithiasis
Production of gall stones.
cis heterozygote
A heterozygote that contains two mutations arranged in the cis configuration—for example, a+ b+ / a b.
cluster set
A series of repetitions interspersed with a short rest interval.
collision theory
The principle that chemical reactions occur because energy is gained as particles collide.
communicable disease
Any disease that can be spread from one host to another.
Concerted reaction
A reaction that takes place in a single step without intermediates. For example, the Diels– Alder cycloaddition reaction is a con certed process.
connectome
A detailed wiring diagram of how neurons connect with one another via synapses.
COPI-coated vesicles
Coated vesicles that transport material early in the secretory pathway, budding from Golgi compartments.
Coupling (cis configuration)
The condition in which a double heterozygote has received two linked mutations from one parent and their wild-type alleles from the other parent (for example, a b ∙ a b × + + ∕ + + produces a b ∕ + + (cf. Repulsion).
critical mass
The necessary amount of a radioactive isotope required to produce a self-sustaining fission reaction.
cross-bridges
Projections around the myosin filament that latch onto the binding site on actin.
cuprous
The inorganic form of copper with a +1 charge.
cyst
A sac with a distinct wall containing fluid or other material; also, a protective capsule of some protozoa.
debridement
Surgical removal of necrotic tissue.
Degrees of freedom
An index associated with the frequency distribution of a test statistic calculated from sample data.
dentate gyrus
A layer of neurons in the hippocampus that receives input from the entorhinal cortex.
desolvation
In aqueous solution, the release of bound water surrounding a solute.
diaphysis
(dı̄-af′i-sis; pl., diaphyses, -sēz) Elongated, usually cylindrical part of a long bone between its two ends; the shaft of a long bone.
dilute solution
A solution that contains a very small amount of solute relative to the amount of solvent.
discharge rate
The average number of action potentials per unit of time.
diverticulosis
A condition in which there are outpocketings (diverticula) of the colon.
double-reciprocal plot
A plot of 1/V0 versus 1/[S], which allows a more accurate determination of Vmax and Km than a plot of V0 versus [S]; also called the Lineweaver-Burk plot.
E6, E7
The oncogenes of the human papillomavirus; they bind and inactivate p53 and pRb, respectively.
effusion
The process by which a gas escapes from a container into a vacuum through a small hole.
Embryo sac
A large thin-walled space within the ovule of the seed plant in which the egg and, after fertilization, the embryo develop; the mature female gametophyte in higher plants.
endocardium
(en-dō-kar′dē-ŭm) Covering of the internal surface of the heart wall and external surface of heart valves.
engram
The physical representation or location of a memory; also called memory trace.
epilepsy
A chronic brain disorder characterized by recurrent seizures.
equivalent treatments
Different methods that have the same effect on controlling microbial growth.
excess (reactants)
The reactants that do not limit the amount of product.
exposure
The number of radioactive decay events to which a person is exposed.
Facilitation
Support actions between species with an advantage to one and without disadvantage to the other species.
feces
(fē′sēz) Material discharged from the GI tract during defecation.
fissure
(fish′ur) Deep furrow, cleft, or slit.
fluke
A flatworm belonging to the class Trematoda.
fovea
The pit or depression in the retina at the center of the macula; in humans, the fovea contains only cone photoreceptors and is specialized for high acuity vision.
furuncle
An infection of a hair follicle.
gender identity
A person’s perception of his or her maleness or femaleness.
globus pallidus
A part of the basal ganglia in the basal forebrain; consists of external (GPe) and internal (GPi) segments. It is involved in motor control.
gumma
A rubbery mass of tissue characteristic of tertiary syphilis.
heat (or enthalpy) of vaporization (ΔHvap)
The amount of heat required to vaporize 1 mol of a liquid to a gas.
Hemodialysis
The major procedure for treatment of renal failure.
hepatobiliary route
Route whereby mucosally produced dimeric IgA enters the portal veins in the lamina propria, is transported to the liver, and reaches the bile duct by transcytosis. This pathway is not of great significance in humans.