Colegio Las Cumbres

Nivel Medio - secundaria@lascumbres.edu.ar

ASIGNATURA: Biology CURSO: Senior 4 PROFESOR/A: Ma. Magdalena Ravagnan

Contenido Nodal Sub-temas incluidos en el contenido nodal

Human physiology

- Excretion and the kidneys. Osmorregulation -Nervous system: neurons, arc reflex, antagonistic muscles. The eye: structures and functions -Endocrine system: hormones. The pancreas. Adrenal glands. Feedback - Homeostasis: definition. - The skin and temperature control. - Drugs: definition. Depressants and stimulants Antibiotics. Effects of heroin, alcohol and tobacco. - Sexual reproduction. -Male reproductive system: structures and functions -Female reproductive system: structure. Menstrual cycle. Fertilisation. Implantation. Placenta. Birth labour. Parental care. -Sexual hormones: Testosterone, progesterone and oestrogen. Secondary sexual characteristics. - Family planning. Birth control. - Sexual transmitted diseases: AIDS, gonorrhoea: Causes. Symptoms and sigs. Effects. Treatment and control.

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The continuity of life and Flowering plants

Genetics : Mitosis and meiosis. Chromosomes. Patterns of heredity. Monohibrid inheritance Determination of sex. Hereditary diseases: cystic fibrosis. Variation: continuous and discontinuous. Mutation. Plant structure and function - Leaf structure: external and internal - Photosynthesis and nutrition in plants: gaseous exchange. Factors affecting the rate of photosynthesis. - Transport in plants: transport of water (transpiration) and food (translocation).

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Esquema de Contenidos para el Período de Orientación, evaluación y promoción- cierre Diciembre 2015

Organisms and their environment

Reproduction in plants: a- Sexual: flower structure. Wind and insect -pollinated flowers. Fertilization and fruit formation. Dispersal of fruits and seeds (wind and animal). Seed structure. Germination. b- Asexual: bulbs (onion) and tubers (potato) - Coordination in plants: tropisms Ecosystem Food chains and food webs: pyramids of numbers and biomass. Recycling- Energy flow in an ecosystem. - Carbon and water cycles. - Human impacts on the environment: - Water pollution: eutrophication. Sewage. - Air pollution: The greenhouse effect. - Agriculture: fertilizers and pesticides. Soil erosion. - Deforestation - Populations: population growth. Limits. Human population. - Conservation: extinction. Conservation of species, genes, habitats and non-renewable resources.

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