100+ Free Cameroon GCE O-Level Human Biology Practice Questions

Human Cell Biology, Tissues & Skeletal System

Microscopic structure and ultrastructure of human animal cells, functions of key organelles (nucleus, mitochondria, ribosomes, endoplasmic reticulum, Golgi apparatus, lysosomes), cell division comparing mitosis and meiosis, histology of primary human tissues (epithelial, connective, muscular, nervous), anatomical divisions of the human skeleton into axial and appendicular frameworks, bone histology and ossification, synovial and cartilaginous joint classifications, biomechanics of antagonistic muscle action, skeletal injuries (sprains, strains, dislocations, fractures), and spinal postural defects (kyphosis, lordosis, scoliosis).

Nutritive & Digestive System

Classes of dietary nutrients (carbohydrates, proteins, lipids, vitamins, mineral salts, dietary fibre, water), balanced diet calculation and energetic yields, nutritional deficiency disorders (scurvy, rickets, goitre, anemia, kwashiorkor, marasmus), dental morphology and oral hygiene, gross anatomy of the alimentary canal, mechanical and chemical digestion by salivary, gastric, pancreatic, and intestinal enzymes, role of bile salts in lipid emulsification, villous absorption and lacteal transport, assimilation of nutrients, and hepatic functions in deamination, glycogen storage, and detoxification.

Transport, Respiratory & Excretory Systems

Blood composition including formed elements and plasma proteins, coagulation cascade, ABO and Rhesus blood grouping systems, internal and external cardiac anatomy, cardiac cycle, pacemaker conduction, blood vessel hemodynamics (arteries, veins, capillaries), tissue fluid and lymphatic circulation, respiratory tract anatomy, mechanics of inspiration and expiration, spirometric lung volumes, alveolar gaseous exchange, respiratory pathology and tobacco hazards, gross and microscopic renal anatomy, glomerular ultrafiltration, tubular reabsorption, osmoregulation via ADH, and artificial hemodialysis.

Nervous, Sensory & Endocrine Systems

Anatomy of the central (brain and spinal cord) and peripheral nervous systems, structure of motor, sensory, and relay neurons, reflex arc components and involuntary reflex actions, synaptic neurotransmission and chemical transmitters, functional specialization of cerebrum, cerebellum, and medulla oblongata, anatomical structure of the eye, mechanism of visual accommodation, optical defects (myopia, hypermetropia, astigmatism, presbyopia) and corrective lens optics, anatomy and physiology of the ear in hearing and balance equilibrium, and endocrine glands, hormone secretions, target actions, and homeostatic negative feedback.

Disease, Immunity, Hygiene & Public Health

Etiological classification of diseases (infectious vs non-infectious), vectors, pathogen life cycles, clinical features, and prevention of major tropical communicable diseases (malaria, cholera, typhoid fever, tuberculosis, HIV/AIDS), non-specific innate barriers vs specific acquired immunity, humoral and cell-mediated immune responses, active and passive immunization, Cameroon Expanded Programme on Immunization (EPI) protocols, large-scale municipal and domestic water treatment, sanitary sewage and solid waste disposal, vector control strategies, food hygiene, and the role of public health authorities.