Across
- 3. Atomic __ is equal to the number of protons plus the number of neutrons
- 5. Alkanes, ____, and alkynes are organic compounds called hydrocarbons
- 7. macromolecules formed from amino acids; polypeptides
- 10. any substance perceived by the immune system as dangerous; body produces an antibody
- 12. this host, portal of exit, mode of transmission, portal of entry and susceptible host is cycle of infection
- 13. positively or negatively charged atoms
- 18. Atomic mass is total number of protons and ___ in the nucleus of an atom
- 20. acids that are macromolecules composed of nucleotides; store information and energy
- 21. atoms of the same element that vary in their number of neutrons.
- 22. ____, artery and nerve are found under each rib in descending order
Down
- 1. law of segregation (first) and law of independent assortment (second)
- 2. properties include color, hardness, melting point, boiling point, density
- 4. pairs with thymine
- 6. Atomic number refers to the number of ___ in the nucleus of an atom
- 8. primary source of energy and easily converted to glucose
- 9. reaction building larger & more complex molecules from smaller ones; requires energy
- 11. pairs with cytosine
- 14. reaction breaking larger molecules down to smaller simpler ones; releases energy
- 15. properties include volume, mass, weight, energy
- 16. consists of nucleotides; adenine, thymine, cytosine, guanine
- 17. type of RNA molecule found in cytoplasm that helps in translation process
- 19. this basic structure consists of nucleus, electrons, protons and neutrons
