Exam 11: Caffeine

The xanthine(s) in tea include(s) __________.

Coffea robusta beans have twice the amount of caffeine as Coffea arabica beans.

Which of the following has the weakest stimulatory effect?

Contact with xanthine-containing plants causes insects to become overstimulated and die.

By the standard of historical records, the world's oldest caffeine-containing beverage is __________.

"Darker" chocolates are defined by higher levels of __________ than less "dark" varieties.

Recent studies have shown that individuals break down caffeine at different speeds depending on their particular sequence of related genes.

The best way of describing caffeine, theobromine, and theophylline is to call them __________.

_________ in young people is about one-half to two-thirds that of an adult, leading to an increased impact of caffeine.

Xanthine-based medications are effective in treating asthma because __________.

Xanthines inhibit the neurotransmitter adenosine.

When ingested orally, caffeine is absorbed within five minutes.

The clearest example of tolerance to the effect of caffeine is observed with respect to __________.

Adenosine produces all of the following effects except __________.

Typically, instant coffee contains about ____mg of caffeine per standard cup.

Polyphenols are more plentiful in __________.

Tony has been drinking heavily at the bar and is drunk. Before going home, his friends give him a big cup of strong black coffee. After drinking the coffee, Tony can expect __________.

Discuss the chemical content in tea.

The first application of coffee beans was as __________.

Coffea robusta beans represent the majority of the world's coffee production.