Visit the C&EN website to play our latest quiz: cenm.ag/june-5-quiz
The US Environmental Protection Agency (EPA) recently announced actions to extend the use of what type of refrigerant?
• Chlorofluorocarbons (CFCs)
• Hydrofluorocarbons (HFCs)
• Ammonia (NH3)
• Carbon dioxide (CO2)
A Pavlovian experiment revealed that mosquitoes can learn to associate the repellent DEET with what?
• Light sources
• Mating opportunities
• Predator presence
• Food sources
What new aspect of the process of awarding US federal grants is drawing “intense criticism from scientists and the research community”?
• A reduction in overall funding levels
• Increased political involvement from the White House
• New requirements for public-private partnerships
• A shift toward funding only applied research
Pharmaceutical company Lundbeck is collaborating with the artificial intelligence firm Cradle to develop antibodies for what purpose?
• To enhance vaccine efficacy
• To treat neurological disorders
• To improve drug delivery systems
• To detect early-stage cancers
Beyond royal jelly, what new discovery has been identified as critical for the development of future queen bees?
• The temperature of the hive’s interior
• The size of the drone population
• Chemically engineered wax in queen cells
• A specific pheromone produced by worker bees
Chemists recently observed the first experimental evidence for a buckminsterfullerene (buckyball) made from which element?
• Silicon
• Nitrogen
• Boron
• Sulfur
C&EN used artificial intelligence in the development of this game, but all the questions and answers were checked by one of our human editors.
