Reading Comprehension Flashcards

When a passage states that a drug 'exhibits a biphasic elimination pattern,' what does this most likely mean?

Answer: The drug is eliminated in two distinct phases with different rate constants

Biphasic elimination describes two distinct phases (typically a rapid distribution phase followed by a slower elimination phase) each governed by different rate constants.

A PCAT passage describes a study where the 'null hypothesis was rejected at p < 0.05.' What conclusion is most directly supported?

Answer: The observed difference is statistically significant

Rejecting the null hypothesis at p < 0.05 means results are statistically significant, though this does not confirm causation or clinical relevance.

In a scientific passage, the author uses the word 'albeit' in the sentence 'The compound showed efficacy, albeit at high concentrations.' How does this word function?

Answer: It introduces a concession or qualification to the preceding claim

'Albeit' means 'even though' or 'although,' and here it qualifies the positive finding of efficacy by noting the limiting condition of high concentration.

A passage discusses 'prospective' versus 'retrospective' cohort studies. Which best describes the key organizational difference?

Answer: Prospective studies follow participants forward in time; retrospective studies look backward at existing data

Prospective studies enroll participants and follow them forward to observe outcomes, while retrospective studies analyze data already collected in the past.

A reading passage states: 'The mechanism by which aspirin inhibits COX-1 is irreversible, unlike ibuprofen.' What inference is best supported?

Answer: Ibuprofen's inhibition of COX-1 is reversible

The contrast word 'unlike' directly implies that ibuprofen's COX-1 inhibition differs from aspirin's irreversible inhibition, making it reversible.

A passage's final paragraph begins: 'Despite the promising early results, several limitations must be acknowledged.' What is the primary rhetorical purpose of this paragraph?

Answer: To temper optimism by identifying weaknesses in the study

Acknowledging limitations after presenting results is a standard scientific writing strategy to provide balance and intellectual honesty without invalidating prior findings.

In a passage about drug interactions, the term 'pharmacodynamic interaction' is contrasted with 'pharmacokinetic interaction.' Which distinction does the text most likely intend?

Answer: Pharmacodynamic interactions affect drug effects at the receptor level; pharmacokinetic interactions affect absorption, distribution, metabolism, or excretion

Pharmacodynamic interactions alter a drug's effect at its site of action, while pharmacokinetic interactions alter how the body processes the drug (ADME).