Answer the following question given this paragraph: Bacteria are the most successful organisms on the planet. They lived on this planet for two billion years before the first eukaryotes and, during that time, evolved into millions of different species. Q: What are the most successful organisms on earth? Choices: - trees - humans - pests - bacteria A:
bacteria
(Question)
Answer the following question given this paragraph: Radioisotopes are widely used in medical diagnosis. These isotopes need to have short half-lives so that they can be administered in very low doses, thus minimizing damage to cells. Q: What type of isotopes have short half-lives and are given in very low doses? Choices: - stable isotopes - gasses - radionuclides - radioisotopes A:
(Answer)
radioisotopes
Ques: Answer the following question given this paragraph: Visit the following website (http://openstaxcollege. org/l/split-brain2) to learn more about split-brain patients and to play a game where you can model split-brain experiments yourself. Each hemisphere contains regions called lobes that are involved in different functions. Each hemisphere of the mammalian cerebral cortex can be broken down into four functionally and spatially defined lobes: frontal, parietal, temporal, and occipital (Figure 16.22). Q: Each hemisphere of the brain contains regions called what that are involved in different functions? Choices: - nodes - folds - chambers - lobes A:
Ans: lobes
(Q).
Answer the following question given this paragraph: Similarly, monoprotic bases are bases that will accept a single proton. Diprotic acids contain two ionizable hydrogen atoms per molecule; ionization of such acids occurs in two steps. The first ionization always takes place to a greater extent than the second ionization. For example, sulfuric acid, a strong acid, ionizes as follows: K a1 = more than 10 2 ; complete dissociation. Q: What is the basic characteristic of monoprotic bases? Choices: - accepts one neutron - accepts no neutrons - accepts no protons - accepts one proton A:
(A).
accepts one proton
Ques:Answer the following question given this paragraph: One source of indoor air pollution is radon gas. Radon is a radioactive gas that may seep into buildings from rocks underground. Exposure to radon gas may cause lung cancer. Another potential poison in indoor air is carbon monoxide. It may be released by faulty or poorly vented furnaces or other fuel-burning appliances. Indoor furniture, carpets, and paints may release toxic compounds into the air as well. Other possible sources of indoor air pollution include dust, mold, and pet dander. Q: Carbon monoxide, radon gas, dust and pet dander are sources of what kind of pollution? Choices: - noise pollution - light pollution - sound pollution - indoor air pollution A:

Ans:indoor air pollution
Answer the following question given this paragraph: The majority of human genes have two or more possible alleles. Differences in alleles account for the considerable genetic variation among people. In fact, most human genetic variation is the result of differences in individual DNA bases within alleles. Q: How many possible alleles do the majority of human genes have? Choices: - three or more - two or less - less than four - two or more A:
two or more