If RNA polymerase malfunctions,

Specialized cells differ from one another because they

4. (20 points) A sample extracted from the tooth of a deceased cow contains 12.4-mg 90Sr (t1/2=28.8 y). a) (2 points) Briefly describe where 90Sr comes from and how it would end up in the tooth of a cow? Do not type this response into Canvas. Only include on scratch paper. b) (5 points) What is the activity of 90Sr present? c) (6 points) If the extracted sample is in equilibrium with the 90Y daughter (t1/2 = 64.0hr) what is the mass of 90Y in the sample?  d) (7 points) If 90Sr only is isolated from a new sample without any 90Y initially present, what will be the mass of 90Y in the new sample ~58 years after isolation? What will be the total activity of the sample from both the parent and daughter 58 years after isolation?    

These things are not allowed: Books (of any kind). This is a closed book exam. Restroom breaks. (Just like Mom said, “why didn’t go before we started???”) Leaving your workstation during the proctoring portion of the exam will result in an F grade for the entire exam. Hats (Come on people, no hoodies, baseball caps or any type of silly drinking hat) No hats. You may not use or have in the testing area iPads, tablets, smart watches, mobile phones or other mobile devices. You have 90 minutes to print and complete the document provided. Print the exam below on white unlined paper, single-sided (no double-sided printing). Graphing & Optimizations Exam with Virtual Proctoring Instructions.pdf

Which whitening solution oxidizes slower?

Use a T for a true statement and a F for a false statement DAP stands for Dose Area Product DAP is a quantity that reflects no only patient dose but also the amount of tissue irradiated DAP decreases with increases field size DAP is used to monitor radiation output DAP detector is positioned on the table after it hits the patients before it hits the IR

Over the past several years cost of living, healthcare and medical imaging have all increased at different rates: Cost of living Healthcare Medical Imaging

Place a E on the statements that relate Entrance Skin Exposure, M on the statements that relate to Mean Marrow Dose, G on the statements that relate to Genetically Significant Dose, and T on the statements that relate to Tissue Dose. May be used more than once Can only be estimated Dose to the skin Dose to organs and tissues Important for genetic responses Most often referred to has the patient radiation dose Various tissues and organs have different sensitivities Target organ for radiation induced leukemia Easy to measure and reasonably accurate  

C++ has a special name for the data types istream and ostream. They are called ____________________.

In C++, the dot is an operator called the ____________________operator.