Life Science
Which of the following cellular components is present in eukaryotes, but not prokaryotes?
Nucleus
Which of the following is not a possible type of triangle?
W) Acute isosceles
X) Acute scalene
Y) Obtuse equilateral
Z) Obtuse isosceles
OBTUSE EQUILATERAL
SunStop is a flexible film developed at the National Renewable Energy Lab that is capable of preventing what form of energy from entering a building through its windows? W) Acoustic waves X) Infrared light Y) Gamma radiation Z) Electricity
X) INFRARED LIGHT
Which of the following occurs at an ocean-continent convergent boundary?
W) Two tectonic plates move away from each other X) Oceanic crust will subduct under continental crust Y) Continental crust will subduct under oceanic crust Z) Two tectonic plates slide past each other
OCEANIC CRUST WILL SUBDUCT UNDER CONTINENTAL CRUST
Which of the following properties of water is most responsible for the tempering influence of the ocean on climate?
W) Freezing point X) pH Y) Heat capacity Z) Density
Y) HEAT CAPACITY
In mammals, what organ is composed of cardiac muscle tissue?
Heart
If m is an integer and 20m is divisible by 6, which of the following could be m?
Researchers at the Joint BioEnergy Institute are improving the efficiency of the biofuel cycle. What is the name of the step of this cycle during which bacteria are used to convert monosaccharides to ethanol?
FERMENTATION
Which of the following is considered a mineral? W) Pearl X) Coal Y) Ice Z) Peat
Y) ICE
Rutherford discovered that the nucleus contains what positively charged particles?
PROTONS
A liver cell is slowly dying because it can not break down toxins. What organelle is likely defective in this cell? W) Golgi [GOAL-jee] complex X) Mitochondria Y) Ribosome Z) Endoplasmic reticulum [reh-TIK-yoo-lum]
Z) ENDOPLASMIC RETICULUM
If x and y are directly proportional, and x is 7 when y is 13, what is x when y is 39?
21
DOE researchers recently published a study showing that individuals who are overweight at midlife have an increased risk for what neurodegenerative disease that is commonly associated with tau fibrils and amyloid-beta plaques?
ALZHEIMER'S DISEASE
The solar system's asteroid belt is a group of asteroids orbiting together between the orbits of which two planets?
MARS AND JUPITER
Which of the following energy transformations occurs in your muscles when you jump into the air? W) Thermal to kinetic X) Chemical to kinetic Y) Kinetic to chemical Z) Thermal to potential
X) CHEMICAL TO KINETIC
Most metabolic pathways in biology are regulated so that the product of a pathway inhibits the enzymes in that pathway. What is this inhibition scheme called?
NEGATIVE FEEDBACK or FEEDBACK INHIBITION)
Sam completely fills a box with sand. The box is a right rectangular prism measuring 2 feet by 16 feet by 2 feet. His friend Max has a box in the shape of a cube. Max takes the sand from Sam’s box and dumps it into his cube, exactly filling it. How many feet tall is Max’s box?
4
Bonus Question!!!!!
Scientists at Brookhaven National Lab are studying catalysts for the conversion of carbon dioxide to methanol. What general type of reaction is this?
W) Synthesis X) Redox Y) Single replacement Z) Decomposition
X) REDOX
What process occurs within the core of the Sun to produce heavy elements and energy from light elements?
FUSION
Dry ice is the solid form of what molecule?
CARBON DIOXIDE or CO2
What cellular organelle is responsible for forming proteins from amino acids?
RIBOSOME
Two cross-country runners want to finish their 5-kilometer practice run at the same time. The runners run at rates covering one kilometer in 5.5 minutes and 7.5 minutes, respectively. How many minutes of head start should the faster runner give the slower runner?
10
Researchers at the Joint BioEnergy Institute are improving the efficiency of the biofuel cycle. What is the name of the step of this cycle during which bacteria are used to convert monosaccharides to ethanol?
FERMENTATION
In our solar system, what planet has the fastest orbital velocity around the Sun?
MERCURY
In kilogram-meters per second, what is the momentum of a 20- kilogram cart traveling at 3 meters per second?
60