MDCAT ECAT Chemistry MCQs

Correct answer B. Hot-melt adhesive

Correct answer B. Pressure-sensitive adhesive

Correct answer C. A group of atoms responsible for the colour, such as –N=N–

Correct answer A. –N=N–

Correct answer B. Peptide bond, –CO–NH–

Correct answer D. The sequence of amino acids in the polypeptide chain

Correct answer A. Hydrogen bonds between C=O and N–H groups of the backbone

Correct answer B. Disulphide bridges between R groups of cysteine

Correct answer C. Quaternary

Correct answer A. Keratin

Correct answer D. Primary structure

Correct answer B. A zwitterion, ⁺H₃N–CH₂–COO⁻

Correct answer B. Lysine

Correct answer C. Haemoglobin

Correct answer A. Steamy fumes of HCl form and ethanoic acid is produced

Correct answer C. Sodium ethanoate and ethanol

Correct answer D. Methane

Correct answer D. 4.4 g

Correct answer C. 50 cm³

Correct answer C. 62.5%