Math
What is the value of cos(60)?
1/2
What is the purpose of a gear in a mechanical system?
To transmit torque and change speed/direction of motion.
What does DNA stand for?
What is Deoxyribonucleic Acid
What are the building blocks of proteins?
amino acids
Which scientist formulated the laws of motion?
Isaac Newton
Simplify:
(x + 2)(x - 5)
x^2 - 3x - 10
What is the difference between tensile and compressive forces?
Tensile pulls apart; compressive pushes together.
What is the charge of a neutron?
0 (neutral)
Which molecule is the main source of energy for cells?
ATP
Which layer of Earth do we live on?
crust
Solve for x :
2^x = 16
4
What is the main advantage of using carbon fiber over steel?
It is lighter and stronger (high strength-to-weight ratio).
What’s the difference between a compound and a mixture?
Compounds are chemically bonded; mixtures are physically combined.
What kind of bond links amino acids together in a protein chain?
peptide bond
What’s the only even prime number?
2
What is the period of the function y = sin(2x) ?
pi
What kind of engineer might design a sustainable water filtration system?
environmental engineer
What is the difference between endothermic and exothermic reactions?
Endothermic absorbs heat; exothermic releases it.
Enzymes are a type of which macromolecule?
protein
In STEM design, what does the “T” in the acronym “ITERATE” stand for?
Find the domain of the function
f(x) = 1/(x^2 - 9)
all real numbers except x does not equal 3 or -3
In 3D printing, what does STL stand for in file formats?
stereolithiography
What organelle packages and ships proteins in a cell?
golgi apparatus
DNA contains the bases A, T, C, and G. In RNA, which base replaces thymine (T)?
Uracil (U)
What is the name of the mathematical constant that describes the ratio of a circle’s circumference to its diameter?
pi