- Test your knowledge
1. Chemistry: Which two of the following five amino acids are classified as basic because of the structure of their side chains?
C. Glutamic acid
2. Astronomy: A star is found to have a surface temperature of 20,000 Kelvin. Which of the following spectral types is it most likely to be?
3. Biology: In what chamber of the human heart is the sinoatrial node located?
A. Left atrium
B. Right atrium
C. Left ventricle
D. Right ventricle
Answers: 1. A (arginine) and E (lysine); 2. Z (O); 3. B (right atrium).
— Source: U.S. Department of Energy Office of Science
Posted: Wednesday, February 19, 2014 12:00 am
Try answering the following question in less than five seconds: Jeff walks west in a straight path for 100 meters and then east in a straight path for 150 meters. What is the magnitude of his displacement, in meters? Can’t do it? Well, Science Bowl teams from Tokay High School, Elkhorn Elementary School and Lodi Middle School can quickly tell you that the answer is 50.
Tokay High’s team is once again headed to the high school regional competition in Modesto on Saturday to compete for an all-expenses-paid ticket to nationals in Washington, D.C. Elkhorn Elementary and Lodi Middle students will be competing for the first time at Las Positas College in Livermore on Saturday.
Wednesday, February 19, 2014 12:00 am.