Biology
The secondary pacemaker of the heart is known as the:
AV node
What is the family name given to the elements in group 1A of the periodic table?
Alkali metals
If the resultant force acting on a body of constant mass is zero, the body's momentum is:
Constant
What percentage of the earth's atmosphere does O2 comprise?
21%
What is the name given to the configuration when three celestial bodies are in a line?
SYZYGY (siz-a-je)
The hormone causing growth of the endometrium.
Estrogen
In a flame test both lithium and strontium produce various shades of this color. What is this color?
Red
Induced electric currents can be explained using which law?
Faraday's law
The ozone layer is located in which region of the atmosphere?
Stratosphere
What name was given to the series of two-man U.S. space missions undertaken in the mid 1960's?
Gemini
Nitrogen fixation is accomplished by
Who hypothesized that it would be impossible to know the exact location and exact momentum of a particle at the same time?
Heisenberg
A circuit which employs a DIRECT CURRENT source has a branch which contains a capacitor. After the circuit has reached a steady state, what is the magnitude of the current in the circuit branch which contains the capacitor?
The current is zero
What is another name for the semi-precious stone heliotrope?
Bloodstone
The first U.S. planetary probe released since the Challenger accident was launched in October 1989. What is its name and which planet is its primary and final destination?
GALILEO, JUPITER
Which cell count tends to be elevated when an individual has an allergy or parasitic worms?
Eosinophil
The hydrolysis of a fat using a solution of a strong hydroxide is called:
Saponification
Iron is what type of magnetic material?
Ferromagnetic
The mineral halite is:
Sodium chloride
Technically, the reflecting power of an object is defined as the ratio of the radiation reflected from an object to the total amount incident upon the object. What term is used in astronomy to indicate the reflecting power of an object?
Albedo
DJ - Gallstones are most often the result of:
Precipitation of Cholesterol
Which scientist explained the photoelectric effect?
EINSTEIN
A charged particle is moving in a UNIFORM magnetic field. If the direction of motion of the charged particle is parallel to the magnetic field, describe the shape of the charged particle's path.
Straight line
What is the name given to a region where one plate of the earth's crust is sliding under another?
Subduction zone
DJ - This yellow-white, spectral F-type star is located in the constellation Carina south of the ecliptic. It ranks second in apparent brightness among the stars.
Canopus