MDCAT Biology MCQs

Correct answer D. To trigger a secondary response that raises antibody levels and memory cell numbers

Correct answer D. Oral polio (Sabin) vaccine

Correct answer D. Intact skin and mucous membranes

Correct answer A. Breaking down bacterial cell walls

Correct answer C. Dilation of arterioles and increased capillary permeability

Correct answer B. They make neighbouring cells resistant to viral replication

Correct answer A. Neutrophils

Correct answer D. Macrophages

Correct answer C. It displays fragments of engulfed antigen on its surface with MHC proteins

Correct answer B. Type 1 diabetes mellitus

Correct answer C. An excessive immune response to a normally harmless antigen

Correct answer D. Adrenaline (epinephrine)

Correct answer B. 93 mmHg

Correct answer B. sphygmomanometer

Correct answer A. 140/90 mmHg

Correct answer C. 55%

Correct answer C. carry more haemoglobin and exchange gases efficiently

Correct answer C. About 120 days

Correct answer A. Neutrophil

Correct answer B. Megakaryocytes