Question

In which of the following scenarios can a pointer to a structure be used?

A) Function parameter
B) Structure member
C) Function return type
D) All of these
E) None of these

Answer 1

EIA, RT-PCR, and PCR are all tests that can be used to detect the presence of a specific virus, and thus the answer is D. all of the above.

Step-by-step explanation:

Detecting the Presence of a Specific Virus

When it comes to detecting the presence of a specific virus, several tests can be used for this purpose. The options listed are:

• EIA (Enzyme Immunoassay)
• RT-PCR (Reverse Transcription Polymerase Chain Reaction)
• PCR (Polymerase Chain Reaction)

All of these tests have the capability to detect viral presence. EIA is commonly used to detect antibodies or antigens related to a virus in a sample. RT-PCR converts viral RNA to DNA and then amplifies specific DNA sequences, making it particularly useful for detecting RNA viruses. PCR is a technique that amplifies DNA sequences, which allows for the detection of viral DNA. Therefore, the answer to the question is D. all of the above, as each test has its own role and application in virus detection.