Sputum samples are typically plated on blood agar, chocolate agar (blood agar containing lysed red blood cells), and macconkey agar. explain why each of these media may be in identifying pathogens in lower respiratory infections.

Firstly there are several pathogens that are involved in lower respiratory infection.

Klebsiella pneumoniaeMoraxella catarrhalisPseudomonas aeruginosa

Moraxella catarrhalis is able to grow on both blood and chocolate agar. Furthermore, these both agar are used to identify gram negative cocci.

Pseudomonas aeruginosa is a large gram negative rod shape bacteria that can only grow well on blood agar.

Klebsiella pneumoniae is a large gram negative rod shape bacteria that can only grow on MacConkey Agar.

Therefore all of these agar are important and helpful to identify pathogens that are responsible for lower respiratory infection.

Schools are being forced to embrace computers. unlike their "digital immigrant" teachers, these students are "digital natives", born into a world where technology is an integral part of everyday life. almost every student has access to a multitude of computers, laptops and tablet devices. it would be crazy to assume an assignment would  notbe written on computer in this day and age.many schools now have a 1-to-1 computer policy, and many districts and states in the united states have mandated computers or ipads across the state for every student,  including los angeles, the second largest school district in the country.but the thing is, when they tried it in la, it wasn't the success they hoped for. that's because the tablets weren't used as much as they expected. rather, it appeared there was a gap between the digital native's love of technology and their use of it in the classroom.this conflicted relationship with computers is also underscored by much of the literature on education. it is also highlighted in professional development and conferences such as  edutech.