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Teas Science
| Question | Answer |
|---|---|
| Acid | any compound with hydrogen ion activity greater than water (ph<7) |
| Acidic solutions | solutions that have a ph scale value less than 7 |
| Activation energy | energy necessary for a chemical reaction to occur |
| Adaptation | increase from generation to generation of alleles of genes that allows a species to survive in their environment |
| Adenosine triphosphate | cellular fuel; produce in the mitochondria |
| Alkane | hydrocarbon with only single bonds |
| Alkene | hydrocarbon with one double bond |
| Alkyne | hydrocarbon with one triple bond |
| Alleles | two or more different forms of a certain gene |
| Anion | atom or molecule with a negative charge |
| Atom | smallest part of an element that still retains all the original properties of the element |
| Atomic mass | number of protons in the nucleus of the chemical element; the number of protons that defines a specific atom |
| Atomic number | number of protons in the nucleus of the chemical element; the number of protons that defines a specific atom |
| Autotroph | organism that is able to produce its own food |
| Axon | part of the nerve cell that carries impulses away from the cell body and connects one neuron with another neuron over a synapse |
| Base | any compound with hydrogen ion activity less than water (ph>7) |
| Basic solutions | solutions that have a pH scale value greater than 7 |
| Binomial nomenclature | two-word naming system that includes the universally accepted genus and species of each organism; developed by Carolus Linnaeus |
| Catalyst | substance that controls the rate of a chemical reaction |
| Cation | atom or molecule with a positive charge |
| Cell | basic unit of all life |
| Cell wall | outside, rigid layer that helps separate the inside and outside of prokaryotic and plant cells |
| Celsius | metric temperature scale defined by melting point of ice (0 Celsius) and the boiling point (100 Celsius) |
| Centrosome | microtubule organizing center that helps to form and organize the mitotic spindle during mitosis |
| Charge | positive or negative distribution within an object |
| Charles Darwin | evolutionary biologist who studied wild life on the Galapagos islands in the 1800s and wrote "On the Origin of Species" in which he explained adaptation and natural selection |
| Chemical bonding | chemical attraction of atoms due to their electron arrangement |
| Chemical reaction | dynamic event that alters the chemical makeup of of a molecule; a process that chemically transforms a set of substances into set |
| Chemotaxis | release of chemicals by damaged cells that attract whit blood cells |
| Chlorophyll | green pigment in plant |
| Chloroplast | organelle that contains chlorophyll and is found in plants: used to carry out photosynthesis |
| Chromatid | one of a pair of newly duplicated chromosomes that are still attached to one another; a pair of matching "sister" chromatids make up the duplicated chromosome |
| Chromosomes | condensed, singke very long strands of DNA double helix located in the nucleus of a cell and containing hundreds of genes |
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