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Belief that livings things may develop from lifeless matter - correct answer Abiogenesis
A compound that In water produces hydrogen ions, usually tastes sour, a pH less than 7 -
correct answer Acid
rain containing acids that form in the atmosphere when industrial gas emissions (especially
sulfur dioxide and nitrogen oxides) combine with water - correct answer Acid rain
Homogenous mixture composed of two or more metals - correct answer Alloy
A type of Protozoan that has no permanent shape - correct answer Amoeba
having no definite form or distinct shape - correct answer Amorphous
The maximum value of a wave or vibration - correct answer Amplitude
Fermentation, or respiration in the absence of oxygen - correct answer Anaerobic respiration
lack of a normal number of red blood cells - correct answer Anemia
Positive electrode of an electrolytic cell; negative terminal of a battery; negative plate of a
vacuum tube; site where oxidation occurs - correct answer Anode
compound that blocks the growth and reproduction of bacteria - correct answer Antibiotic
A protein, usually in the blood of an organism, that serves to counteract the effects of disease-
producing bacteriabor viruses - correct answer Antibody
a remedy that stops or controls the effects of a poison - correct answer Antidote
A substance that prevents the growth or activity of bacteria - correct answer Anticeptic
Substance in the body neutralizes toxins - correct answer Antitoxin
Wormlike, narrow part of the alimentary canal, in the lower right-hand part of the human
abdomen - correct answer Appendix
A piece of metal or a coil of wire that moves back and forth, or rotates, in a magnetic field -
correct answer Armature
a blood vessel that carries blood away from the heart to the periphery of the body - correct
answer Artery
,A group of organisms that have jointed appendages, an exoskeleton, bilateral symmetry, and
reproduce sexually; insects, arachnids, millipedes and cenitpedes, and crustaceans - correct
answer Arthropods
Vitamin C; found in citrus fruits, tomatoes, and green vegetables - correct answer Ascorbic acid
Free of living bacteria - correct answer Aseptic
Producing offspring without inion of individulaln or germ cells - correct answer Asexual
reproduction
Process by which digested food is utilized by the body to build up or repair cells - correct
answer Assimilation
Process by which digested food is utilized by the body to build up or repair cells - correct
answer Assimilation
One of a group of "minor plants" between Mars and Jupiter, of which about 1,500 are known -
correct answer Asteroid
The whole mass of gases surrounding a planet - correct answer Atmosphere
smallest particle of an element, consisting of a nucleus surrounded bynelectrons - correct
answer Atom
The breaking down of an atomic nucleus, into two or more parts, with a great release of energy
- correct answer Atomic fission
The joining of atomic nuclei to form heavier nuclei, such as deuterium (heavy hydrogen) and
tritium (another isotope of hydrogen) to make helium, resulting in the release of enormous
quantities of energy - correct answer Atomic fusion
An upper chamber of the heart thatnreceives blood from the veins-also called the atrium -
correct answer Auricle
Organism (a green plant) that nourishes itself by making organic materials out of inorganic -
correct answer Autotroph
a plant hormone that promotes root formation and bud growth - correct answer Auxin
aerobic rod-shaped spore-producing bacterium - correct answer Bacillus
(microbiology) single-celled or noncellular spherical or spiral or rod-shaped organisms lacking
chlorophyll that reproduce by fission - correct answer Bacteria
the balence of animals and palntes in their enviroment - correct answer Balance in Nature
an instrument that measures atmospheric pressure - correct answer Barometer
, A term used to discribe the amount of energy the body expends when in a inactive or basic
(basal) state. - correct answer Basel Metabolism
any of various water-soluble compounds capable of turning litmus blue and reacting with an
acid to form a salt and water - correct answer Base
solid unweathered rock lying beneath surface deposits of soil - correct answer Bedrock
a tumor that is not cancerous - correct answer Benign Tumor
a digestive juice secreted by the liver and stored in the gallbladder - correct answer Bile
the naming system for organism in wich each organsim is given a two part name-a genus name
of different species in an area - correct answer Binomal Nomenclature
a major biotic community characterized by the dominant forms of plant life and the prevailing
climate - correct answer Biome
taking out and examining living tissue from a living thing - correct answer Biospy
that part of the central nervous system that includes all the higher nervous centers - correct
answer Brain
one of the pair of tubes that branch off from the trachea and go into the lungs - correct answer
Bronchial Tube
unit of heat defined as the quantity of heat required to raise the temperature of 1 gram of
water by 1 degree centigrade at atmospheric pressure - correct answer Calorie
any malignant growth or tumor caused by abnormal and uncontrolled cell division - correct
answer Cancer
long and slender with a very small internal diameter - correct answer Capillary
An electrical device used to store electrical charge. - correct answer Capacitor
an essential structural component of living cells and source of energy for animals - correct
answer Carbohydrate
a heavy odorless colorless gas formed during respiration and by the decomposition of organic
substances - correct answer Carbon Dioxide
an odorless very poisonous gas that is a product of incomplete combustion of carbon - correct
answer Carbon Monoxide
A cancerous tumor - correct answer Carcinoma
any animal that feeds on flesh - correct answer Carnivore