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D4.2 Stability and change - HL written task
This structured extension question is in the style of the IB exam questions. It addressed the concept of succession, how the species in an environment change over several years. The image shows an example...
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A2.2 Cell size - written task
This structured extension question is in the style of the IB exam question on these Application of Skills. Calculate scales of magnification. It also requires an understanding of the methodology of collecting...
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C1.1 Enzymes & metabolism - written task Free
This structured extension question is in the style of an IB exam question. It has a focus on the concept of enzymes and metabolic pathways. Check your answers against the model answers....
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A4.1 Evolution & speciation - written task Free
This structured question is in the style of IB exam questions, with a focus on the concept of speciation. Speciation is the splitting of one species into two separate species. This occurs when two populations...
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B2.1 Membranes & transport - written task HL
This structured question is in the style of IB exam questions. It has a particular focus on the nature of membrane structure and how transport occurs across membranes through ion channels. Voltage-gated...
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D3.1 Plant reproduction - written task
In flowering plants, sexual reproduction involves the production of gametes by meiosis, and fertilisation, just as it does in animals. However plants often enlist the help of insects to deliver the male...
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B1.1 Cellulose - written task 1
This structured extension question is in the style of the IB exam questions. It requires analytical skills and the ability to connect structure and function. It has a particular emphasis on the concept...
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A3.1 Diversity of organisms - written task Free
This structured extension question has an emphasis on the concepts, of unity, the universality of the genetic code and diversity, the variety that is seen in alleles of genes. This is a great illustration...
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A1.1 Water - written task Free
Water is the solvent in which all the cellular reactions of living organisms take place. Plants also need water for transport and as a source of hydrogen for photosynthesis. The loss of water from the...
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B3.1 Gas Exchange - written task Free
This structured extension question is in the style of the IB exam questions. It has a particular focus on the concept of gas exchange in a leaf. The "describe" command term invites exam candidates to...