S4 CONT NOD

1. 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. Structure of the urinary system.
The nephron.
-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.
1°Trimestre
The continuity of life
and
Flowering plants
Genetics : Mitosis and meiosis. Chromosomes. Patterns of heredity.
Monohibrid inheritance
Determination of sex. 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).
2°Trimestre
Esquema de Contenidos para el Período de Orientación, evaluación y promoción- cierre
Febrero 2018

2. 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.
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.
3°Trimestre