Biology
To what genus do brown bears belong?
ANSWER: URSUS
What is the ratio of iron to oxygen in the mineral hematite?
W) 1 to 2
X) 1 to 3
Y) 2 to 3
Z) 3 to 2
Y) 2 to 3
What is 23% of 4?
Researchers at Princeton Plasma Physics Lab are attempting to understand fluid flow in the non-laminar regime. This regime of flow, in which fluid velocity and pressure change chaotically, is called what?
A cup of black coffee has a pH of 5, and a solution of ammonia has a pH of 11. How many times as acidic is the coffee compared to the ammonia?
In the normal human eye, how many distinct types of cone cells are there?
Which of the following metamorphic rocks exhibits foliation?
W) Schist
X) Marble
Y) Quartzite
Z) Amphibolite [am-FIB-oh-lite]
W) Schist
A pyramid with 36 edges has how many vertices?
Scientists at Idaho National Lab are developing uranium silicide fuel pellets for next-generation nuclear reactors to replace current uranium dioxide fuel pellets. What is the oxidation state of uranium metal in uranium dioxide?
Solvated electrons appear a vibrant blue in solution. Which of the following colors of light is being absorbed?
W) Violet
X) Orange
Y) Green
Z) Blue
X) Orange
What type of virus has an RNA genome that it converts into DNA once it enters the host cell?
What planet has a mean density about 70 percent that of Earth, and surface acceleration due to gravity about 40 percent that of Earth?
A ball is dropped from the top of a 45-meter-tall building. After each bounce, it reaches one-third of the height from which it previously fell. In meters, what is the total vertical distance the ball has traveled when it hits the ground for the 3rd time?
Ames National Lab researchers are studying alane, or aluminum hydride. This substance is generally used in synthetic chemistry labs to perform what chemical role?
W) Reducing agent
X) Oxidizing agent
Y) Combustion catalyst
Z) Heterogeneous [hetero-JEE-nee-us] catalyst
W) Reducing agent
Suppose that a 50-kilogram cart and a 70-kilogram cart, both traveling at 5 meters per second in opposite directions, collide and stick together. In meters per second with one significant figure, what is the speed of the final composite object?
Which of the following statements is NOT true regarding chloroplasts?
W) Chloroplasts possess inner and outer membranes
X) Thylakoids contain chlorophylls and carotenoids [cah-ROT-en-oids]
Y) Pigment molecules and proteins associate to form photosystems
Z) The stroma is characterized by surface area-increasing folds called cristae [KRIS-tee]
Z) The stroma is characterized by surface area-increasing folds called cristae [KRIS-tee]
What continent has the lowest amount of annual rainfall per unit area?
To the nearest whole number, 111 kilometers per hour is how many meters per second?
Scientists at Lawrence Berkeley National Lab at the IceCube experiment are studying high-energy neutrinos. Most high-energy neutrinos are produced by high-energy cosmic interactions, while low-energy neutrinos detected on Earth are primarily produced from nuclear reactors and what other major source?
Which of the following quantities is dimensionless?
W) The volume of an internal combustion engine
X) The perimeter of the Earth
Y) The number of molecules in 1 gram of water
Z) The mass of one mole of sodium atoms
Y) The number of molecules in 1 gram of water
Mollusks possess a flexible, tongue-shaped feeding structure called what?
W) Radula [RAD-yoo-lah]
X) Mantle
Y) Siphon
Z) Viscera [VIH-sur-ah]
W) Radula [RAD-yoo-lah]
Rank the following three elements in increasing order in terms of their mass abundance in the ocean: 1) Chlorine, 2) Hydrogen; 3) Sodium.
To the nearest integer, what is the length of a space diagonal in a right rectangular prism with edges of length 4, 9, and 12?
In order to indirectly measure the average kinetic energy of atoms in a given location, physicists at Oak Ridge National Lab have developed a device that will produce a nanometer-resolution map of what property of a crystal?
How many milliliters of a 0.1 molar hydrochloric acid solution contain the same amount of acid as 2 milliliters of a 12-molar hydrochloric acid solution?