Match the following terms and definitions. 1. electrically charged atom or group of atoms formed by the loss or gain of electrons chemical bond 2. the union between atoms by the interaction of their electrons in the outermost orbit ionic bond 3. atoms of elements or compounds interact to form at least one new compound 1 ion 4. the number of electrons lost or gained to complete an element's outer shell valence 5. a bond formed by the electrical attraction between two oppositely charged ions chemical reaction

ionic bond:5

ion:1

chemical bond:2

valence:4

chemical reaction:3

Explanation:

both anaerobic and aerobic respiration use glucose (or other carbohydrates), proteins and lipids to produce atp and nadh. cell uses those energy molecules, obtained from food and   breaks them down during the chemical reactions of respiration. in anaerobic respiration, nadh is regenerated to nad+ by enzymes lactate dehydrogenase (lactate is produced, e.g. in muscle cells) or by alcohol dehydrogenase where ethanol is produced (alcohol fermentation), while in aerobic respiration, electrons from nadh are deposited in the mitochondria to regenerate nad+ (electron transport chain. anaerobic respiration produces 2 atp per molecule of glucose compared to aerobic respiration where about 38 atp molecules are produced.

the cladogram shown here shows similarities and differences among several classes of vertebrates. anatomically, the four have limb structure as their common ancestor. we might separate the mammals from the other three classes because they a) divergent; do not lay eggs b) identical; are warm-blooded c) varied; a four chambered heart d) homologous; have mammary glands