Which of the following steps (on this page and the next page) would be necessary to determine the most effective antibiotic for a bacterial infection using the Disk Diffusion Assay? Select three necessary steps and three unnecessary or incorrect steps, and explain why it is or is not necessarv/correct. Collect a sample of bacteria from the infected patient. Collect samples of bacteria from the bathroom taps in the patient's room. Collect samples of bacteria from other patients who seem to have the same infection. Soak disks in many different types of antibiotic. Soak disks in the antibiotic you have the biggest supply ot. Label the disks with the type of antibiotic you soaked them in. • Leave the petri dishes uncovered while the bacteria grow. , cover the petri dishes while the bacteria grow. Treat the bacterial culture with a disinfectant before spreading on the agar plate Wear personal protective equipment (gloves, mask, lab coat) while performing the procedure Wear gloves while performing the procedure.
Molecular Techniques
Molecular techniques are methods employed in molecular biology, genetics, biochemistry, and biophysics to manipulate and analyze nucleic acids (deoxyribonucleic acid (DNA) and ribonucleic acid (RNA)), protein, and lipids. Techniques in molecular biology are employed to investigate the molecular basis for biological activity. These techniques are used to analyze cellular properties, structures, and chemical reactions, with a focus on how certain molecules regulate cellular reactions and growth.
DNA Fingerprinting and Gel Electrophoresis
The genetic makeup of living organisms is shown by a technique known as DNA fingerprinting. The difference is the satellite region of DNA is shown by this process. Alex Jeffreys has invented the process of DNA fingerprinting in 1985. Any biological samples such as blood, hair, saliva, semen can be used for DNA fingerprinting. DNA fingerprinting is also known as DNA profiling or molecular fingerprinting.
Molecular Markers
A known DNA sequence or gene sequence is present on a chromosome, and it is associated with a specific trait or character. It is mainly used as a genetic marker of the molecular marker. The first genetic map was done in a fruit fly, using genes as the first marker. In two categories, molecular markers are classified, classical marker and a DNA marker. A molecular marker is also known as a genetic marker.
DNA Sequencing
The most important feature of DNA (deoxyribonucleic acid) molecules are nucleotide sequences and the identification of genes and their activities. This the reason why scientists have been working to determine the sequences of pieces of DNA covered under the genomic field. The primary objective of the Human Genome Project was to determine the nucleotide sequence of the entire human nuclear genome. DNA sequencing selectively eliminates the introns leading to only exome sequencing that allows proteins coding.
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