The main function of the lungs is to bring air into contact with blood so that oxygen and carbon dioxide can be exchanged in the alveoli.

Who was William Knox D’Arcy and what was his significance? (NOTE: Answer should be 50-75 words)

The tiny air sacs of the lungs that support a network of capillaries from pulmonary blood vessels are the:

A 36-year-old female patient with a history of asthma is admitted to the ICU from the emergency department. Her respirations are 30, very labored, with accessory muscle use and bilateral inspiratory and expiratory wheezing. There is bilateral hyperresonance during chest percussion. A blood gas taken in the ICU after 1 hour of continuous aerosolized albuterol (15 mg) reveals: pH 7.38, partial pressure of carbon dioxide (PaCO2) 42 mm Hg, partial pressure of oxygen (PaO2) 53 mm Hg, oxygen saturation (SaO2) 88%, bicarbonate (HCO) 25 mEq/L with nasal cannula 6 L/min. The patient is 5’5″ and weighs 135 lb. The most appropriate action at this time is which of the following?

Promoter A that controls gene C and promoter B that controls gene D are both recognized by the σ70 subunit in E. coli. When the σ70 subunit is active, the transcription of gene C is initiated once every 30 seconds on average and the transcription of gene D is initiated once every 3 seconds on average. Which promoter has a greater affinity for the σ70 subunit?

Choose all the options below that describe RNA modifications that increase mRNA longevity in eukaryotes.

In which situation would you expect resistance to have existed (in the environment or the clinic) first?

Out of the nucleotides highlighted in red boxes shown in the tRNA structure below, which one is at the “wobble position”?

A small business has  more than 100 employees,

Which of the following drugs is an antisense oligonucleotide that alters the splicing of the SMN2 gene, thereby treating spinal muscular atrophy?