OJEE Human Health — practice questions
16 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice OJEE Human Health in the app →**Innate immunity** is best described as:**Active immunity** is acquired when:**Malaria** is caused by which protozoan?The **Widal test** is used for diagnosis of:**Vaccines** work by:**ABO blood group system**: a person with blood group O has:**Helper T cells (CD4⁺)** in the immune system primarily:**Cannabinoids** (active component: THC) are obtained from:A patient is bitten by a stray dog. The doctor administers an **anti-rabies serum** (containing pre-formed antMatch: AIDS (i) HIV — CD4⁺ depletion; Hepatitis (ii) HBV/HCV — liver damage; Diabetes (iii) NOT infectious. WhWhy does the **secondary immune response** to a known antigen produce more antibodies, faster, than the primar**Cancer cells** differ from normal cells in that they:Which drug is a **CNS stimulant** that blocks dopamine reuptake?**Pneumonia** (lung infection) is caused most commonly by which bacterium?A person tests **HIV-positive on ELISA**. The next step recommended is:Why is **smoking** strongly linked to lung cancer (carcinogenic risk far above other organs)?