Science MCQs

A key feature of adaptive immunity is immunological memory, which allows for a faster and stronger response upon re-exposure to the same pathogen.

The thymus is the primary organ where T-lymphocytes mature and learn to recognize foreign antigens.

Bacteria are single-celled living organisms. Viruses are not considered living; they are particles of genetic material inside a protein coat.

Adaptive immunity is "acquired" throughout life as the immune system encounters and remembers specific pathogens.

The 'P' in DPT stands for Pertussis, which is also known as whooping cough.

The strong acidity of hydrochloric acid in the stomach helps to kill most pathogens that are ingested with food and water.

Spikes are proteins on the viral envelope that bind to specific receptors on the surface of host cells, allowing entry.

Sebum is an oily secretion that creates a slightly acidic film on the skin, inhibiting the growth of many microbes.

The RT-PCR test is a molecular test that detects the genetic material (RNA) of the SARS-CoV-2 virus in a sample from the nose or throat.

Diabetes is a metabolic disorder and cannot be spread from person to person like infectious diseases.