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What type of analysis is involved in the determination of the presence of a Group I cation’s presence in an unknown sample?

A dehydration reaction:

The minerals and collagen found in bone provide the strength to protect organs and tissues.  What major theme of biology does it represent?

With type I diabetes, the cells in the pancreas do not produce enough insulin (a hormone) to lower glucose levels in the blood. What major theme of biology does it represent?

Please use this information to answer the following question(s).The collared lizard is a species found in the Desert Southwest. Male collared lizards show considerable color variation, ranging from brightly colored to a very dull pattern. Your goal is to determine the function, if any, of male color patterns in collared lizards, using the scientific method. Your tentative explanation is that male color plays a role in attracting females for mating purposes. You predict that females will preferentially choose brightly colored males over dull-colored ones. To test your prediction, you observed the interactions of female collared lizards with their male counterparts. You selected males that were the same age and size, and that differed only in their coloration pattern. You placed equal numbers of the two types of male lizards, bright and dull, in aquariums, along with one female lizard per aquarium. Out of 350 aquariums observed, the female chose to mate with the brightly colored male 277 times, and the dull-colored male 70 times. In three instances, the females did not mate with either type. A picture of the lizards is below:    Answer the following question.What conclusion can be drawn from the data?

Which of the following would cause the greatest freezing point depression when dissolved in a liter of water 1.0 M NaCl, 1.0 M KBr, 2.0 M C6H12O6, 1.0 M Ca3(PO4)2?

Please read the following scenario to answer the following questions.While radioactive isotopes are used in medicine to identify tumors and other diseases, they can also be used to treat diseases such as cancer. One method to treat cancerous tumors is to expose them to radiation which can kill the cancerous cells and the tumor. In 2013, the U.S. Food and Drug Administration approved a new cancer treatment based on the radioactive isotope radium-223; this isotope has a half-life of 11.4 days. The radioactive drug, known as Xofigo®, is injected into the patient’s bloodstream and travels to certain regions of the body. Because it emits high-energy radiation over short distances, it can kill cancerous cells in the sites where it localizes.After the drug was injected into a person, the following data were collected regarding the amount of radiation measured in different organs in the person’s body. Organ Measured radiation Brain 0.37 Liver 11.01 Bones 4262.60 Lungs 0.27 Urinary bladder 14.90 Using the above table, what kind of cancer do you think Xofigo® is used to treat?

Why do we need to construct a calibration curve by plotting absorbance verses concentration for known standard solutions for this experiment?

Please use this information to answer the following question(s).The collared lizard is a species found in the Desert Southwest. Male collared lizards show considerable color variation, ranging from brightly colored to a very dull pattern. Your goal is to determine the function, if any, of male color patterns in collared lizards, using the scientific method. Your tentative explanation is that male color plays a role in attracting females for mating purposes. You predict that females will preferentially choose brightly colored males over dull-colored ones. To test your prediction, you observed the interactions of female collared lizards with their male counterparts. You selected males that were the same age and size, and that differed only in their coloration pattern. You placed equal numbers of the two types of male lizards, bright and dull, in aquariums, along with one female lizard per aquarium. Out of 350 aquariums observed, the female chose to mate with the brightly colored male 277 times, and the dull-colored male 70 times. In three instances, the females did not mate with either type. A picture of the lizards is below:      Answer the following question.What is the hypothesis of this case study?

Please read the following scenario to answer the following questions.While radioactive isotopes are used in medicine to identify tumors and other diseases, they can also be used to treat diseases such as cancer. One method to treat cancerous tumors is to expose them to radiation which can kill the cancerous cells and the tumor. In 2013, the U.S. Food and Drug Administration approved a new cancer treatment based on the radioactive isotope radium-223; this isotope has a half-life of 11.4 days. The radioactive drug, known as Xofigo®, is injected into the patient’s bloodstream and travels to certain regions of the body. Because it emits high-energy radiation over short distances, it can kill cancerous cells in the sites where it localizes.After the drug was injected into a person, the following data were collected regarding the amount of radiation measured in different organs in the person’s body. Organ Measured radiation Brain 0.37 Liver 11.01 Bones 4262.60 Lungs 0.27 Urinary bladder 14.90 Which of the following would be the best experiment to determine whether this drug is an effective treatment option for cancer patients?