Chemistry of Life

4. number, the sum of protons and neutrons in the nucleus of an atom
5. structure, three-dimensional shape of proteins resulting from interactions of side chains
8. structural polysaccharide that is a major component in plant cell walls
9. when two atoms of the same element have a different number of neutrons
10. the type of bond that joins amino acids
15. bond between atoms that transfer electrons instead of sharing them
19. the type of fat that does not have double bonds between carbon atoms, animal fat
20. charged subatomic particle found in the nucleus of atoms
21. a substance that minimizes changes in pH
23. function to speed up biochemical reactions
24. storage form of polysaccharides in animals
26. the subatomic particle found in the nucleus of atoms that has no charge

1. bond between atoms that share electrons
2. made of two monosaccharides; example: maltose
3. a substance composed of two or more different elements
6. water attracted to another substance
7. type of lipid with two fatty acids and a phosphate group, make up a majority of the cell membrane
11. scale, describes if a solution is acidic or basic
12. negatively charged subatomic particle found outside the nucleus
13. outermost electron shell with highest energy
14. elements, essential for life, but required in very small amounts
16. an important type of steroid that’s a component of animal cell membranes
17. number, number of protons in the nucleus of an atom
18. a major element that makes up our body and is involved in organic chemistry reactions
22. weakest type of bond; slightly positive end of polar molecule attracts slightly negative end of another polar molecule
25. compounds on the left side of a chemical reaction