Which is an ADVANTAGE of using polymerase chain reaction (PCR) assays to detect pathogens?

Question

BlackTom AI · Accepted Answer

Question focus: evaluating the advantages of using polymerase chain reaction (PCR) assays to detect pathogens.
Option A states that the results are not affected by contamination with other bacteria or viruses. In reality, PCR can be highly sensitive to contamination, leading to false positives, so this is not a reliable advantage.
Option B claims that specialised machines are needed to carry out the tests. While PCR does require specific equipment, presenting this as an advantage is misleading because needing specialized machines is more a resource requirement or limitation rather than a direct benefit to detection capability.
Option C correctly notes that there is no handling of live pathogens and therefore a low risk to laboratory staff. PCR detects nucleic acids rather than culturing organisms, so the work can be done without propagating viable pathogens, reducing biosafety concerns when proper protocols are followed.
Option D states that the pathogen can be cultured for further characterisation. This is inaccurate in the context of PCR: PCR does not culture organisms and cannot provide isolate material for further phenotypic or growth-based analyses.
Option E suggests that the pathogen can be stored for future studies. Storage of the pathogen itself is not an inherent advantage of PCR; PCR deals with genetic material, and whether samples can be stored depends on separate handling and storage practices rather than the PCR technique itself.
Summing up, the standout advantages emphasized by PCR are its ability to detect genetic material without requiring live organisms and its potential to reduce exposure risk, while the other statements either misstate benefits or describe unrelated aspects of laboratory practice.

Which is an ADVANTAGE of using polymerase chain reaction (PCR) assays to detect pathogens?单项选择题

类似问题

Why might PCR be preferable to immunoassays in the early detection of pathogens?

Question at position 8 An excess of growth hormone (GH) before puberty can result in the development ofgigantism.Graves' disease.acromegaly.pituitary dwarfism.Clear my selection

Question at position 6 The most abundant supporting cells in the central nervous system are called Question Blank 1 of 1[input].

Question at position 5 In the eye, the lens functions tofocus light on the retina at the back of the eye.protect the surface of the eye.increase vision in low-light conditions.move the eye side to side.Clear my selection

Question at position 4 Olfactory (odor) receptors are chemoreceptors. TrueFalse

If the pKa of HCHO2 is 3.74 and the pH of an HCHO2/NaCHO2 solution is 3.00, which of the following is TRUE?

Identify the missing particle in the following nuclear equation: 92 236 𝑈 → 38 90 𝑆 𝑟 + ? + 2 0 1 𝑛 + 4 0 0 𝑔

更多留学生实用工具

智能学习助手

风格化写作助手

论文查重助手

文献引用助手

课堂转译助手

课堂笔记助手

Quiz搜索助手

学校历年真题

智能刷题助手

智能匹配练习

希望你的学习变得更简单