1. which of the following types of cells utilize deoxyribonucleic acid as their genetic material but do not have their DNA encased within a nuclear envelope? —— archaean
2. trace elements are those required by an organism in only minute quantities. which of the following is a trace element that is required by humans and other vertebrates, but not by other organisms such as bacteria or plants? —— iodine
3. a localized group of organisms that belong to the same species is called a —— population
4. the complexity and variety of organic molecules is due to —— the chemical versatility of carbon atoms
5. Prokaryotes are classified as belonging to two different domains. what are the domains? —— Bacteria and Archaea
6. A dietary Calorie equals 1 kilocalorie. Which of the following statements correctly defines 1 kilocalories? One kilocalorie equals —— 1000 calories, or the amount of heat required to raise the temperature of 1 kg of water by 1°C
7. You find yourself standing next to a beautiful rose bush. Which of the following do you and the rose have in common? —— You both are multicellular
8. What is the major difference between a kingdom and a domain —— all eukarya belong to one domain
9. In the process of science, which of these is tested? —— a hypothesis
10. Measurements show that the pH of a particular lake is 4.0. What is the hydroxide ion concentration of the lake? —— 10^-10
11. Which of the following is the best description of a control for an experiment? —— the control group is matched with the experimental group except for one experimental variable
12. A salamander relies on hydrogen bonding to stick to various surfaces. Therefore, a salamander would have the greater difficulty clinging to a —— surface of hydrocarbons
13. What is the pH of a solution with a hydroxyl ions concentration of 10^-12M? —— pH 2
14. what results from an unequal sharing of electrons between atoms? —— a polar covalent bond
15. When are atoms most stable? —— when all the electron orbitals in the valence shell are filled
16. which of the following is a FALSE statement concerning amino acids —— are non polar
17. liquid water;s high specific heat is mainly a consequence of the —— absorption and release of heat when hydrogen bonds break and form
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