Test Bank for Human Biology 12th Edition By Mader | VERIFIED 2023/2024

The smallest unit of an element that still retains the chemical and physical properties of that element is called A. an isotope. B. a nucleus. C. an atom. D. a molecular bond. E. a neutrino. 2. In an atom, the number of protons always equals the number A. of electrons. B. of neutrons. C. of neutron and protons. D. of quarks. E. of neutrinos. 3. Examine the section of the periodic table in Figure 2.1. Which element will behave similarly to C? A. C a B. S C. A r D. S i E. M g 4. How many elements occur naturally? A. 11 2 B. 9 2 C. 6 4 D. 3 2 E. 6 5. The atomic number of an atom is determined by the number of A. proton s. B. neutron s. C. electron s. D. protons and neutrons. E. protons and electrons. True / False Questions 6. An element cannot be broken down by chemical means. True False Multiple Choice Questions 7. Why is He over Ne in the periodic table? (Refer to Figure 2.1) A. They both have the same atomic mass. B. They both have the same number of electrons in their outermost orbital. C. They both have a full outermost orbital. D. They both have the same atomic number. E. They both have the same number of protons in their nuclei. 8. Be has an atomic number of 4 and an atomic mass of 9. How many protons does it have? A. 4 B. 5 C. 9 D. 1 3 9. What is the symbol for sodium? A. N a B. S C. S o D. N E. D m 10. An element has its outermost orbital full and contains more than 2 electrons. Which element is this? A. H e B. N e C. C D. N E. O 11. Isotopes of an element differ due to the number of A. proton s. B. neutron s. C. electron s. D. both protons and electrons. E. neutrino s. 12. Carbon dating is a common method employed in dating certain kinds of fossils. It is based upon the radioactive decay of an isotope of carbon (C14). Referring to the atomic number of carbon attained from figure 2.1, how many neutrons does C14 have? A. 2 B. 4 C. 8 D. 1 2 E. 1 4 13. What is iodine 131, used in medicine to produce various images of organs and tissues, called? A. A mixture B. A tracer C. An emulsion D. A colloid E. A sensor True / False Questions 14. Radiation can produce both positive and negative effects for humans. True False Multiple Choice Questions 15. A combination of two or more atoms of the same type is called A. an atomic unit. B. a molecule. C. a compound. D. an isotope. E. an ion. 16. Ca3(PO4)2 represents a/an A. elemen t. B. mixtur e. C. compoun d. D. isotop e. E. ato m. 17. Atoms that share electrons have what type of bonds? A. covale nt B. neutr al C. hydroge n D. colloid al E. ioni c 18. CaCl2 is a salt that forms as the result of what type of bond? A. covale nt B. hydroge n C. pola r D. nonpolar E. ioni c True / False Questions 19. Water makes up 60-70% of total body weight. True False Multiple Choice Questions 20. Hy dro ge n bo nds A. B. C. D. E. 21. Th e rea son wa ter is pol ar is bec aus e A. B. C. D. E. 22. Wh ich of the foll owi ng cha rac teri stic s of wa ter is mo st res po nsi ble for the sin kin g of the Tit ani c? A. B. C. D. E. 23. On a wa rm da y in Apr il, Tin a ju mp ed int o the swi m mi ng po ol. To her sur pri se the wa ter wa s rea lly col d. Wh ich pro per ty of wa ter did she dis cov er? A. B. C. D. E. 24. Will ia m not ice d blo od my ste rio usl y cli mb ing up a cap illa ry tub e. Thi s is an ex am ple of whi ch pro per ty of wa ter ? A. B. C. D. E. 25. In an aci dic sol uti on A. B. C. True / False Questions 26. A sol uti on wit h a pH of 7 has 10 tim es as ma ny H + as a pH of 6. Tru e Fal se Multiple Choice Questions 27. A sol uti on con tai nin g 0.0 00 01 mo les of H + has a pH of A. B. C. D. E. True / False Questions 28. Th e pre sen ce of a bu ffer in our blo od is an ex am ple of ho me ost asi s. Tru e Fal se Multiple Choice Questions 29. Joi nin g sm all mo lec ule s (m on om ers ) tog eth er to for m lon ger cha ins (po ly me rs) req uir es a pro ces s call ed A. B. C. D. E. 30. Wh ich of the foll owi ng is not on e of the fou r cla sse s of org ani c mo lec ule s fou nd in cell s? A. B. C. D. E