However, if a participant gives both a letter answer and a scientific answer, both parts must be correct. The second team is allowed a full 5 seconds to buzz in after the first team has answered incorrectly or has answered without being recognized, unless time expires. The answer to the bonus question must come from the team's captain including when the question has been interrupted. The match is played until either the time expires or all the toss-up questions have been read. Each half begins with a toss-up question.
Timing begins after the moderator has completed reading the toss-up question.
Once read in its entirely, a question will not be reread. A participant who has buzzed in on a toss-up question must answer the question promptly after being verbally recognized by the moderator. After a team member has answered a toss-up question correctly, the team is given the opportunity to answer a bonus question. The team will have 20 seconds to begin to give its answer to the bonus question. Consultation among team members is allowed on bonus questions.