A police officer stops a motorist who is driving erraticallyand notices a bag of white powder on the front seat of thecar that he suspects contains heroin. The officer bringsthe bag to you, a forensic scientist in the local crime lab.Name one screening test that you might perform to determine the presence of heroin. Assuming the powder testspositive for heroin, what should you do next?

Q: what are the different hoods in the lab and why are they important?

A:

Q: After recent renovations to an office building, employees in the building begin complaining of…

A: The sick building syndrome is used to describe a situation in which the building occupants…

Q: Which of the following is a positron? A B © He

A:

Q: Why do we need strict rules and policies while working in the laboratories

A: Laboratory refers to a place or a building that is equipped with scientific equipment and chemicals…

Q: A 43 gram tube of cream contains 19 mg of a drug. What is the percent strength of the drug in the…

A: The percent strength of the drug is used to express the concentration of the drug substance in a…

Q: why is it important for a clinical to understand false-positive and false-negative test results

A: Sensitivity and specificity are the two important concepts in medical testing. Sensitivity measures…

Q: Are all drugs of interest to a forensic scientist illegal?

A: Forensic Science: It is a branch of science that involves the use of scientific methods and tools to…

Q: Doing Benedict’s test, how do positive and negative controls help you interpret your test results…

A: A chemical test called Benedict's test can be performed to determine if an analyte contains reducing…

Q: Why is it recommended to have a carbon monoxide detector on each floor of a home?

A: Similar to how a smoke detector will sound an alarm when smoke is discovered, these carbon monoxide…

Q: a. Why might this be particularly true when comparing highly volatile chemicals like alcohol to less…

A: Answer: ANTI-BACTERIAL = These are the chemicals  which have capability to inhibit or kill the…

Q: You are visiting A nurse in a foreign country the doctor orders heparin 50 Units kilograms dose…

A: The volume of heparin which the nurse will administer to the patient in three days based on the…

Q: Electrodes in the figure below can be considered as : * FC3 TP7 g-tec PO9 g.GAMMAcap 9Tes

A: Electrodes are the electrical devices that have tendency to conduct electricity. There are different…

Q: During a rape investigation, you have recovered a hair which is similar in color to the victim’s…

A: Introduction  Amplification via polymerase chain reaction (PCR) is an automated process for…

Q: SCENARIO: You are police investigator assigned to solve a case of house robbery. In your…

A: Blood is perhaps the main biological follows ( traces ) that are regularly found on the crime…

Q: As a future veterinarian, it is necessary to give the animals or our pets multivitamins as…

A: These are some of the most common pet supplements. Only a veterinarian's recommendation should be…

Q: When should you label all the containers or laboratory glassware having chemicals in them? a. After…

A: Inside our laboratory, we should work very carefully and should not eat inside the lab.

Q: Which of the following is/are true about fluorescentmicroscopy?(a) Fluorescent microscopes use an…

A: Ans: Fluorescent microscopy: It is the type of microscopy which makes use of fluorescence for…

Q: If the organism is a pony which of the following tests would be positive  a cellular respiration…

A: In the living world, we see a large number of microorganisms, animals and plants. These organisms…

Q: It is good or bad to put chemicals in your body?

A: Chemicals  It can be an element, compound, or mixture. The physical state can be solid, liquid, and…

Q: tenry filled two jars with the same volume of water as shown in the picture. He placed a lid on J…

A: The experiments are conducted to understand biological and scientific phenomena that take place…

Q: How Teichmann test is performed and how do you relate it with forensic studies?

A: Forensic Science -- It is a branch of medical science . Forensic explains the relationship with…

Q: SCENARIO: You are police investigator assigned to solve a case of house robbery. In your…

A: DNA profiling, which is also called DNA fingerprinting is defined as the process of determining a…

Q: Which of the following practices in the lab is NOT accepted? O Leaving water bottles on the bench…

A: A laboratory is a place where experiments are done. A specific place for the experiments is chosen…

Q: In the biology laboratory mixtures of chemicals (called reagents) are often used. These also have…

A: Reagents are chemical substances that are added to the target sample to determine the presence of a…

Q: Discuss that does all drugs of interest to a forensic scientist are illegal?

A: We know that Drug analysis is the testing of a suspected controlled substance to determine its…

Q: Suppose you were instructed to make two antiserum solutions: The first is identical to what you used…

A: Precipitation test is a antigen and antibody reaction in a given test solution to form a insoluble…

Q: During the lumbar puncture 3 bottles are used: Why don’t they spin the sample that will be used for…

A:

Q: Which of the following practices in the lab is NOT accepted? O Leaving water bottles on the bench…

A: There are some rules or guidelines for lab practices. A student should follow the guidelines while…

Q: The branch of pharmacology dedicated to studying what happens to substances once they get into a…

A: The study of the effect of drugs on the body is called pharmacology. The drugs or the substances…

Q: What is PET (positron emission tomography) scans can?

A: Positron Emission Tomography (PET), which employs injections of radiopharmaceuticals to help a…

Q: How is storage and transportation affect your samples results in general?

A: The collection of samples for laboratory testing is critical in the evaluation and monitoring of the…

Q: Can a doctor make a plan for treatment for a person based solely on the information in the gel…

A: Gel electrophoresis is a laboratory technique for separating DNA, RNA, and protein mixtures based on…

Q: How does luminol detect blood? Discuss its significance in forensic science.

A: Luminol is a yellowish white organic crystal that is widely used in forensic to detect blood traces.…

Q: In Beadle  and Tatum experiments the immediate effect of the X-ray treatment was

A: The Beadle and Tatum experiment provided evidence that the genes are involved in the formation of…

Q: You are a lab worker in a hospital medical testing lab and observe how your coworker does not follow…

A: Medical test or diagnosis tests are procedures that are used to to detect or determine or to monitor…

Q: What would match the  best?

A: Biological lipids are a chemically diverse group of organic compounds which are insoluble or…

Q: Which substance is a negative control in all parts of this lab?

A: Negative control:  The substance that is not exposed to the experimental or any other treatment…

Q: You are a police investigator assigned to solve a case of house robbery. In your investigation, you…

A: The nucleus of human somatic cells contains 23 pairs of chromosomes. These chromosomes are thread…

Q: Which is better? A test with high sensitivity or a test with high specificity?

A: Tests can be differentiate from each other based on the differentiating evaluating factors.  The…

Q: Which of the following you are allowed to in the lab?

A: Answer: Laboratories Guidelines are the guidelines provided by each laboratory which states the…

Q: What is the difference between an antiseptic and a disinfectant?  A. Antiseptics are used against…

A: Antiseptics and disinfectants both kill microorganisms, and many people use the terms…

Q: A hospital has inadvertently lost the id tags of two babies in the nursery. In the gel shown below…

A: DNA fingerprinting is a laboratory technique used to establish a link between biological evidence…

Q: The Duquenois-Levine test is a valuable color test for

A: We can say that, In a forensic chemical analysis of an unknown material, the analytical method is to…

Q: The Duquenois–Levine test is a valuable color test for___________.

A: In a forensic chemical analysis of an unknown material, the analytical method is to narrow down the…

Q: Would any of the above give a positive Lieberman-Burchard test? Explain your answer.

A: The endocrine system is a vital biological system that produces various hormones. These hormones…

Q: Do you feel that laboratory animals should be used in experiments in toxicology? Why or why not?

A: People and our quality of life benefit from research using laboratory animals. Most people on the…