Pupils will begin study of Unit 2 during S3 and complete it during
S4.
• Ecosystems
o Energy flow, components of an ecosystem, food chains and food
webs, biodiversity, adaptations to habitat and niche, effects of
grazing, effects of human activity, competition in plants and animals.
Environmental
Biology
• Factors affecting Variety of Species
in an Ecosystem
o Gamete production in animals and plants, fusion of the nuclei,
chromosome structure, significance of DNA, meiosis, sex determination,
alleles, genotypes and phenotypes, monohybrid crosses, co-dominance,
polygenic inheritance, natural selection, selective breeding, genetic
engineering.
Variation
and Genetics
Genetics
and Inheritance
Applied
Genetics
• Unit 2 is assessed by:
o NAB 2 Environmental Biology –Minimal
assessment 26/40 required to pass
Pupils will study Unit 3 during S4.
• Mammalian Nutrition
o Breakdown of food, tests for starch, glucose, protein and fat,
energy content of food, digestion, structure and function of alimentary
canal and associated organs.
Digestion
Process
• Control of the Internal Environment
o Structure of the human urinary system, role of the mammalian
kidney, osmoregulation, negative feedback control by ADH, osmoregulation
in marine and fresh water fish.
Control
of the Internal Environment
• Circulation and Gas Exchange
o Structure and function of the heart and blood vessels, structure
and function of the lungs in gas exchange and the capillary network,
composition and functions of blood.
Circulation
and Gas Exchange
• Sensory Mechanisms and Processing
of Information
o Structure and function of the brain, cerebrum, cerebellum, medulla
and hypothalamus, structure and function of the nervous system,
role of the CNS.
• Unit 3 is assessed by both:
o NAB 3 Animal Physiology –Minimal assessment
26/40 required to pass
o Unit 3 Exam which will cover all of Unit 3 as well as material from
Unit 1 and Unit 2
Term Exam in S4:
• This assessment will re-examine all of Unit 1 plus the majority
of Unit 2.
Prelim in S4:
• This assessment will cover all of Units 1 and 2.
Practical Lab Report
• This NAB practical report is internally assessed on a Pass
or Fail basis. Pupils must write a complete lab report for one selected
practical activity. There are six clearly identified criteria that
must be satisfactorily achieved.