Nocti Exam Practice Questions and Answers

The purpose of a copyright is to - Answer- give a creator of an original work exclusive rights to it The government organization whose purpose is to regulate the use of genetically modified organisms in research laboratories is the - Answer- NIH To correct a written error in a laboratory notebook strike through with a single line, date, initial, and - Answer- insert the correct information The best way to prevent the spread of disease in the lab is to - Answer- wash hands after work To create a standard curve, the laboratory technician should - Answer- take an average of both data sets Which of the following contains the safety information about the safe handling of chemicals? - Answer- Safety Data Sheets (SDS) A program designed to copy itself onto other software and to spread through multiple computers when the software is used is called - Answer- virus Why is polymerase chain reaction (PCR) an important technique in biotechnology? - Answer- PCR takes a small amount of DNA and increases the quantity so that it can be analyzed Which objective lens provides the greatest field of view? - Answer- 4x Successful teamwork involves group leadership, shared responsibility, and - Answer- role assignment What is personal protective equipment (PPE) designed to protect the body from? - Answer- absorption The three components of the fire triangle are - Answer- oxygen, heat, and fuel Why do scientists load DNA of known sizes into the agarose gel? - Answer- it is easier to determine sizes of unknowns using comparison techniques DNA fingerprinting is used to - Answer- identify individuals The NFPA label has a ''3'' in the blue triangle section. This informs the scientist that it - Answer- is a moderate health hazard 0.010 ml is equivalent to - Answer- 10.0 µl The federal agency that is responsible for funding and overseeing research is the - Answer- National Institute of Health The three properties of molecules that cause them to separate on agarose gel electrophoresis are size, shape, and - Answer- charge A thermocycler is used in what process? - Answer- polymerase chain reaction Henrietta Lacks, a poor black woman, had cervical cancer cells removed which became the basis of a line of cells called HeLa cells. HeLa cells have been used for important science research for over 60 years. Her case raised lots of ethical issues, such as - Answer- Who owns and profits from the use of someone else's cells? When preparing a Tris buffer, which of the following solutions would be the best choice to use to adjust the pH to 7.5 if the starting pH is 11.0? - Answer- hydrochloric acid solution The symbol below indicates that the substance is - Answer- radioactive A plastic disposable inoculating loop drops on the floor. What should the lab technician do if plating bacteria on agar growth plates? - Answer- start over with a new sterile applicator A lab technician needs to measure out 25.5 mg of DNA. How would this appear on an analytical balance? - Answer- 0.0255 g Ion-exchange chromatography s