Test Your MCAT Knowledge!

Chemistry

1

What is the pH of pure water at 25°C?

7 

1

What is the atomic number of hydrogen? 

1

2

What is the hybridization of the carbon atoms in ethene (C₂H₄)?

sp₂

2

What is the primary purpose of a buffer solution?

To maintain stable pH despite addition of acid or base

3

Explain Le Chatelier’s principle as it applies to shifting equilibrium in the Haber process (N₂ + 3H₂ ⇌ 2NH₃). What will happen when you increase the pressure? What if you increase the temperature? 

Increasing pressure shifts the equilibrium toward NH₃ production, while increasing temperature shifts it toward the reactants. 

Physics

1

What is the unit of force in the metric system?

Newton (N)

1

What physical quantity is distance divided by time?

Speed

2

State Newton’s third law of motion.

For every action, there is an equal and opposite reaction

2

What is the formula for electric power in terms of voltage and current?

P=VI

3

What is the formula for the critical angle in total internal reflection? 

θ_c=sin^-1(n2/n1)

Biology

1

What organelle produces ATP in the cell?

Mitochondria

1

What is the basic structural unit of the nervous system?

Neuron

2

What is the function of the sodium-potassium pump in neurons?

Maintains resting membrane potential by pumping 3 Na⁺ out and 2 K⁺ in

2

What phase of the cell cycle involves DNA replication?

S phase 

3

What is the difference between paracrine and endocrine signalling?

Paracrine signaling acts locally; endocrine signals travel through bloodstream

Biochemistry

1

What is the monomer unit of proteins?

Amino acids

1

What biomolecule stores genetic information?

 DNA (nucleic acids)

2

What type of bond forms between amino acids in a protein?

Peptide bond

2

What class of macromolecules are enzymes?

Proteins

3

What inhibits phosphofructokinase-1 (PFK-1) in glycolysis?

Inhibited by ATP and citrate

Psych/Soc

1

What brain area is primarily responsible for processing emotions?

Amygdala

1

What is learning through observing others called?

Observational learning (or modelling) 

2

In which Piaget stage is object permanence developed?

Sensorimotor stage

2

Define the term 'social facilitation.'

Improved performance on tasks in the presence of others

3

Explain the difference between primary and secondary socialization.

Primary is early childhood learning from family; secondary is learning norms in wider society later in life