CSEC Human and Social Biology study plan
CSEC Human and Social Biology · Give each week a clear focus.
8 weeks · About 6 hours per week
Organisms and Metabolism
Define the distinguishing characteristics of living organisms and classify each characteristic with one original Caribbean example
Label a diagram of the human digestive system from memory and state the function of each named organ
Distinguish mechanical from chemical digestion and name the enzyme active at each region of the alimentary canal
Explain the role of bile, the pancreas and the villus structure in absorption
Write out the balanced role of enzymes using the lock-and-key idea, including the effect of temperature and pH on activity
Your checkpoint
A one-page hand-drawn digestive system diagram with every organ labelled and a table of four digestive enzymes listing substrate, product and site of action
Organisms and Metabolism
Describe aerobic and anaerobic respiration, stating the word equation, ATP yield and the site in the cell for each
Compare respiration with photosynthesis in terms of reactants, products, energy change and organelle involved
Explain the effect of exercise on breathing rate, heart rate and lactic acid accumulation
Interpret a simple respirometer or limewater experiment and state the conclusion drawn
Define photosynthesis and list the limiting factors that affect its rate
Your checkpoint
A comparison table of photosynthesis and respiration with at least six points of contrast, plus a written explanation of why breathing rate rises during vigorous exercise
Organisms and Metabolism & Life Processes
Describe the structure and function of the circulatory system, including the double circulation and the heart's chambers and valves
Explain how the transport systems of a named plant (xylem and transpiration, phloem and translocation) differ in structure and function
Describe how the kidney and skin regulate water and salt balance in the body
Explain the role of the liver in assimilation, deamination and detoxification
Compare the transport systems of a mammal and a flowering plant
Your checkpoint
A concept map linking digestion, absorption, transport and excretion, with every arrow labelled by the substance moved
Life Processes
Describe the structure of a motor neurone and explain how an impulse crosses a synapse
Explain reflex action using a named example and outline the reflex arc in order
Distinguish the roles of the cerebrum, cerebellum, medulla and hypothalamus
Describe how hormones such as insulin, adrenaline and ADH act as chemical messengers
Explain how negative feedback controls blood glucose concentration
Your checkpoint
A labelled reflex arc diagram plus a 150-word explanation of how negative feedback restores blood glucose after a meal
Life Processes
Describe the menstrual cycle and identify the hormones that control its phases
Compare sexual and asexual reproduction, naming two advantages of each
Describe pollination, fertilisation and seed dispersal in a named flowering plant
Explain the role of the placenta and amniotic fluid in the development of the fetus
Describe the structure and function of the male and female reproductive systems
Your checkpoint
A hormone timeline of the menstrual cycle showing the rise and fall of oestrogen, progesterone, FSH and LH across 28 days
Heredity, Diseases and the Environment
Define genotype, phenotype, allele, dominant, recessive and homozygous, and use them correctly in written answers
Complete genetic crosses for monohybrid inheritance, including a test cross, and state expected ratios
Explain sex determination and give two examples of sex-linked inheritance
Distinguish continuous from discontinuous variation and give two causes of each
Explain how mutation and natural selection can change the frequency of an allele in a population
Your checkpoint
A set of five worked genetic crosses, each with a Punnett square, the parental genotypes and the expected phenotypic ratio
Heredity, Diseases and the Environment
Classify named diseases as communicable or non-communicable and identify the causative agent of each
Describe the body's first and second lines of defence and explain how vaccination produces immunity
Explain the modes of transmission of at least three named Caribbean-relevant diseases and one control measure for each
Describe the effects of pollution, deforestation and poor waste disposal on human health
Interpret data on disease incidence and suggest one intervention supported by the data
Your checkpoint
A disease fact sheet covering five diseases with causative agent, transmission route, symptoms, treatment and one prevention measure for each
Organisms and Metabolism & Life Processes & Heredity, Diseases and the Environment
Answer a full timed practice paper under exam conditions and mark it against the mark scheme
Identify the three domain areas where accuracy was lowest and re-teach each weak point
Practise structured questions requiring explanations and data interpretation rather than recall alone
Summarise each domain onto a single revision card containing the highest-yield facts
Draw every required diagram from memory without reference material
Your checkpoint
One completed timed practice paper with a written error log of at least ten mistakes, each paired with the corrected fact
Milestones
Week 2: Explain, without notes, the difference between aerobic and anaerobic respiration and name the products of each in a 5-minute spoken or written summary
Week 4: Score at least 70% on a self-made 20-question test on digestion, respiration, transport and the nervous system
Week 6: Complete three monohybrid crosses correctly, including one test cross, and predict the offspring ratio each time
Week 8: Score at least 65% on a full timed practice paper and show that every logged error has a corrected fact written beside it