Science Bowl Qualification

Biology: With which of the following does human interstitial fluid differ in concentration the most when compared with plasma?

• sodium ions

• potassium ions

• magnesium ions

• proteins

What human organ produces the majority of immune complement proteins?

Chemistry: Which of the following is a diprotic acid?

• H₂C₂O₄

• H₃PO₄

• HCl

• HNO₂

Which of the following is not true?

• an ideal gas cannot undergo condensation

• the less mass a particle has, the faster it will effuse

• when a gas is compressed, its temperature always increases

• a gas is easier to compress than a liquid

PHYSICS : Which of the following BEST describes the most common functions for which most transistors are used

• to switch on and off or amplify electronic signals

• to allow electric current to pass in only one direction while increasing or decreasing the voltage

• to store electrical energy

• to regulate the frequency of electrical sine waves

Which of the following is the abbreviated name of the most common field effect transistor in modern electronic circuitry:

• DET

• MOSFET

• BJT

• BFET

MATH: Find the cotangent and cosecant, respectively, of a 90º angle:

Which of the following points is closest to the point (1, –2):

• (3, –5)

• (0, 3)

• (3, 0)

• (–5, –5)

EARTH SCIENCE: In which of the following lakes in North America would you typically find a thriving community of halophiles and alkaliphiles:

• Lake Michigan

• Mono Lake, California

• Great Slave Lake, Canada

• Lake Powell, Utah/Arizona

Which of the following BEST explains why Mono Lake in California is hypersaline:

• it has no outlet and a high evaporation rate

• it is subject to extreme saltwater intrusion emanating from a vast system of underground aquifers

• it is underlain by massive salt domes formed 250 million years ago

• it has been subjected to periodic eruptions of volcanic ash