Biomass Transfer and Nutrient Cycling — OCR GCSE Combined Science B J260
OCR GCSE Combined Science B · J260
Biomass Transfer and Nutrient Cycling
What you need to know
Explain the fundamental biochemical importance of sugars, fatty acids, glycerol, and amino acids in the synthesis and degradation of complex carbohydrates, lipids, and proteins.
Describe the application and accurate interpretation of qualitative chemical tests used to identify specific biological molecules in a sample.
Describe photosynthetic organisms as the primary, foundational producers of food, thereby providing the essential biomass required for life on Earth.
Describe the essential substances, including dissolved food molecules, that must be continuously transported into organisms to meet their ongoing biological needs.
Describe the distinct levels of ecological organization, progressing systematically from individual organisms up to the complex structure of the entire ecosystem.
Explain the critical ecological roles of both interdependence and competition in shaping the ongoing dynamics and stability of a community.
Understand that a wide variety of essential substances continuously and dynamically cycle through both the abiotic and biotic components of healthy ecosystems.
Explain the specific mechanisms and overall biological importance of the carbon cycle and the water cycle in sustaining life.
Explain the specific, irreplaceable role that microorganisms play in facilitating the cycling of substances throughout an ecosystem.
Calculate precise mass percentages in scientific contexts involving the use and cycling of substances within ecosystems.