STEM Entrance Exam Prep

Simplify the expression: 3x + 2y - 5x + 4y

• -2x + 6y

• -2x + 2y

• 5x - 6y

• 8y - 2x

What type of reaction is represented by the equation: 2H2 + O2 -> 2H2O?

• Synthesis reaction

• Combustion reaction

• Decomposition reaction

• Single displacement reaction

What is the overall equation for cellular respiration?

• C6H12O6 + 6O2 -> 6CO2 + 6H2O + ATP

• 6CO2 + 6H2O -> C6H12O6 + 6O2 + ATP

• H2O + CO2 -> C6H12O6 + 6O2

• C6H12O6 + 6O2 -> 6CO2 + 6H2O + ADP

According to Newton's first law of motion, an object at rest will stay at rest unless acted upon by what?

• internal force

• external force

• friction

• gravity

In photosynthesis, what is the primary pigment that absorbs light energy?

• Carotene

• Xanthophyll

• Melanin

• Chlorophyll

Factorize the expression: x^2 - 4

• (x + 2)(x - 2)

• (x^2 - 4)

• (x - 3)(x + 1)

• (x + 3)(x - 1)

What is the process by which plants convert light energy into chemical energy?

• Sunlightification

• Chlorophyllation

• Greenification

• Photosynthesis

What is the formula for Newton's second law of motion?

• F = m^2a

• F = ma

• F = mv

• F = a/m

What are the reactants in the chemical reaction: C6H12O6 + 6O2 -> 6CO2 + 6H2O?

• C6H12O7 + 6O2

• C6H12O6 + 6O2

• C6H12O5 + 6O2

• C6H12O6 + 5O2

What is the equation for the overall process of photosynthesis?

• 6CO2 + 6H2O + light energy -> C6H12O6 + 6O2

• 6CO2 + 6H2O + ATP -> C6H12O6 + 6O2

• 6CO2 + 6H2O -> C6H12O6 + 6O2

• 6CO2 + 6H2O + heat energy -> C6H12O6 + 6O2