Ireland · NCCA Curriculum Specifications
5th Year The Living World: Senior Cycle Biology
A comprehensive exploration of biological principles focusing on the continuity of life and the complexity of living organisms. Students investigate the molecular basis of life, the diversity of organisms, and the intricate systems that maintain human health and ecological balance.

01The Chemistry of Life and Cell Biology
An investigation into the molecular building blocks of life and the structural organization of cells. Students explore how microscopic processes drive macroscopic biological functions.
Students will explore the basic characteristics of living things and understand their fundamental needs for survival, such as food, water, air, and shelter.
Students will learn about different types of food and how they help our bodies grow and stay healthy, categorizing them into simple food groups.
Students will understand the importance of water for all living things, including its role in our bodies and in the environment.
Students will learn that all living things are made of tiny parts called cells, and explore the very basic differences between plant and animal cells (e.g., cell wall in plants).
Students will identify the main parts of a simple animal cell (nucleus, cytoplasm, cell membrane) and a plant cell (cell wall, chloroplasts, vacuole) and their very basic functions.
Students will understand that living things grow because their cells grow bigger and make more cells, introducing the simple idea of cell division for growth and repair.
Students will learn about the journey food takes through the body and how it is broken down into smaller pieces to give us energy.
Students will explore how our bodies take in air (oxygen) and breathe out waste air (carbon dioxide), understanding the basic function of the lungs.

02Genetics and the Continuity of Life
Exploring the mechanisms of inheritance, DNA structure, and the processes of cell division that ensure life continues across generations.
Students will explore observable traits in themselves and others, understanding that some traits are inherited from parents and some are learned or developed.
Students will observe and discuss how animals inherit traits from their parents, leading to similarities within families of animals.
Students will explore how plants also pass on traits to their offspring, observing similarities between parent plants and their seedlings.
Students will investigate the life cycles of various animals (e.g., butterfly, frog, chicken), identifying the different stages of growth and change.
Students will explore the life cycle of a flowering plant, from seed to seedling to mature plant and back to seed, understanding the process of reproduction.
Students will understand that humans also have a life cycle, growing and changing from babies to children to adults, and discuss the different stages of human development.

03Diversity and Evolution
A study of the classification of living things and the evolutionary processes that drive biological diversity.
Students will learn the principles of biological classification (taxonomy) and explore the characteristics of the five kingdoms of life.
Students will learn about some common microorganisms like bacteria and fungi (e.g., yeast, mould), understanding that some are helpful and some can cause illness.
Students will explore how different animals have special features or behaviours that help them survive in their habitats (e.g., camouflage, hibernation).
Students will investigate how plants have adapted to different environments (e.g., desert plants storing water, water plants with floating leaves).
Students will learn about fossils as evidence of ancient life and explore how animals and plants have changed over very long periods of time, focusing on dinosaurs.
Students will learn about pathogens — including bacteria (single-celled living organisms) and viruses (non-living, acellular particles that require a host cell to replicate) — and how they cause infectious disease.
Students will explore common viral diseases, methods of prevention (vaccines), and the body's immune response to viral infections.

04Plant Biology and Physiology
Detailed study of plant structure, transport, and the vital process of photosynthesis.
Students will identify and describe the structure and primary functions of the main plant organs: roots, stems, and leaves.
Students will investigate how water travels from the roots, up the stem, and into the leaves of a plant, understanding its importance for plant survival.
Students will understand the process of transpiration and the factors affecting water uptake and loss in plants.
Students will learn that plants are special because they can make their own food using sunlight, water, and air (carbon dioxide), a process called photosynthesis.
Students will understand that when plants make food, they also release oxygen, which is the air that humans and animals need to breathe.
Students will investigate how environmental factors such as light intensity, temperature, and CO2 concentration affect the rate of photosynthesis.
Students will explore the structures of a flower, pollination, fertilization, and seed/fruit development.
Students will learn about various methods of asexual reproduction in plants, including vegetative propagation, and their applications in horticulture.

05Human Anatomy and Physiology
An exploration of the systems that maintain human life, focusing on coordination, transport, and defense.
Students will investigate the structure and function of the heart, blood vessels, and blood components in transporting substances throughout the body.
Students will explore the composition of blood, blood groups, and the role of the lymphatic system in fluid balance and immunity.
Students will learn about the body's natural ways to fight off germs, such as skin, sneezing, and white blood cells, and the importance of staying clean.
Students will explore the five senses (sight, hearing, smell, taste, touch) and understand how they help us learn about and interact with our environment.
Students will learn about the brain as the main control centre of the body, responsible for thinking, feeling, and controlling our movements and senses.
Students will examine the structure and function of major sensory organs (e.g., eye, ear) and how they convert stimuli into nerve impulses.
Students will understand that our bodies produce waste and have ways to get rid of it, such as through sweat, breathing, and going to the toilet, keeping us healthy.
Students will learn that our body tries to keep its temperature steady, and explore simple ways it does this, like sweating when hot or shivering when cold.

06Ecology and Environmental Biology
Investigating the interactions between organisms and their environment, and the impact of human activity on ecosystems.
Students will define ecosystems and identify the key biotic (living) and abiotic (non-living) factors that influence them.
Students will construct and analyze food chains and food webs, understanding the flow of energy and matter through different trophic levels.
Students will learn about decomposers (like worms, fungi, and bacteria) and their important role in breaking down dead plants and animals, returning nutrients to the soil.
Students will explore factors that influence population size and growth patterns, including birth rates, death rates, and carrying capacity.
Students will examine different types of interactions between species, including competition, predation, mutualism, commensalism, and parasitism.
Students will analyze trends in human population growth and discuss its environmental and social consequences.
Students will investigate different types of pollution (air, water, soil) and their effects on ecosystems and human health.
Students will understand the importance of biodiversity, the causes of its loss, and various conservation strategies.
Students will explore the causes and evidence of climate change and its observed and predicted effects on ecosystems and species.