Explain some of the modern uses for radioisotopes in society
What will be an ideal response?
Radioisotopes can be used in a variety of medical applications for diagnosis (imaging studies, such as the use of radioactive iodine to detect thyroid cancer) or therapy (such as the use of radioactive seeds to treat prostate cancer). Although not discussed in the chapter, there are other uses. For example, phosphorus isotopes are used to sequence DNA and RNA for medical, forensic, and criminal applications. Many isotopes have been used for a variety of dating in geologic fields (e.g., carbon-14 has been used to date fossils).
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Which base is not found in DNA?
A. Cytosine B. Guanine C. Thymidine D. Adenine E. Uracil
Animals apparently evolved:a
in freshwater. b. in the ocean. c. during the Cambrian explosion. d. in swamps. e. during the Devonian.
Imagine a hypothetical population of elephants and rabbits in which both species remain at carrying capacity over many generations
Who would have more offspring that survive to be adults and reproduce during their lifetime, a mating pair of elephants or a mating pair of rabbits? Explain your answer.
Myeloschisis and Rachischisis are examples of what pathology?
A. DiGeorge Syndrome B. Omphalocele C. Spina Bifida D. Tetralogy of Fallot E. Treacher-Collins Syndrome