Learn · ⁨学习⁩

国际文凭组织 · IB Diploma · 生物 · SL

Choose a lesson to begin. · ⁨选择一门课程开始。⁩

Course units and learning goals · ⁨课程单元与学习目标⁩ →These lessons teach selected course objectives. Check the remaining coverage gaps; the material is not a complete preparation programme. · ⁨这些课程教授选定的教学目标。请检查剩余的覆盖缺口；本材料并非完整的备考方案。⁩

1 A.1.1 · Water 0 / 1

1 Water: a molecular cause for a biological property

2 A.1.2 · Nucleic acids 0 / 1

1 DNA, protein synthesis and evidence

3 A.2.2 · Cell structure 0 / 1

1 Cell measurements and scale

4 A.3.1 · Diversity of organisms 0 / 1

1 Diversity, classification and a branching model

5 A.4.1 · Evolution and speciation 0 / 1

1 Adaptation: a function in an environment

6 A.4.2 · Conservation of biodiversity 0 / 1

1 Biodiversity, conservation and sampling evidence

7 B.1.1 · Carbohydrates and lipids 0 / 1

1 Biomolecule structure: bonds, polarity and function

8 B.1.2 · Proteins 0 / 1

1 Biomolecule structure: bonds, polarity and function

9 B.2.1 · Membranes and membrane transport 0 / 1

1 Osmosis and a fair potato experiment

10 B.2.2 · Organelles and compartmentalization 0 / 1

1 Cell measurements and scale

11 B.2.3 · Cell specialization 0 / 1

1 Specialized cells: structure linked to function

12 B.3.1 · Gas exchange 0 / 1

1 Gas exchange: maintaining diffusion gradients

13 B.3.2 · Transport 0 / 1

1 Digestion, transport and health evidence

14 B.4.1 · Adaptation to environment 0 / 1

1 Adaptation: a function in an environment

15 B.4.2 · Ecological niches 0 / 1

1 Ecological niches: resources, conditions and interactions

16 C.1.1 · Enzymes and metabolism 0 / 1

1 Enzyme rate and controlled measurements

17 C.1.2 · Cell respiration 0 / 1

1 Respiration, ATP and energy transfers

18 C.1.3 · Photosynthesis 0 / 1

1 Photosynthesis and limiting factors

19 C.2.2 · Neural signalling 0 / 1

1 Neural signalling: impulses and synapses

20 C.3.1 · Integration of body systems 0 / 1

1 Feedback and internal conditions

21 C.3.2 · Defence against disease 0 / 1

1 Disease transmission and immune response

22 C.4.1 · Populations and communities 0 / 1

1 Sampling populations without choosing the answer

23 C.4.2 · Transfer of energy and matter 0 / 1

1 Energy transfer: use production and a stated boundary

24 D.1.1 · DNA replication 0 / 1

1 DNA replication: retain one strand in each daughter molecule

25 D.1.2 · Protein synthesis 0 / 1

1 DNA, protein synthesis and evidence

26 D.1.3 · Mutations and gene editing 0 / 1

1 DNA, protein synthesis and evidence

27 D.2.1 · Cell and nuclear division 0 / 1

1 Cell division: count nuclei and chromosomes carefully

28 D.2.3 · Water potential 0 / 1

1 Water movement: compare potential and net change

29 D.3.1 · Reproduction 0 / 1

1 Sexual reproduction: meiosis and fertilization have different roles

30 D.3.2 · Inheritance 0 / 1

1 Inheritance, variation and probability

31 D.3.3 · Homeostasis 0 / 1

1 Feedback and internal conditions

32 D.4.1 · Natural selection 0 / 1

1 Adaptation: a function in an environment

33 D.4.2 · Sustainability and change 0 / 1

1 Sampling populations without choosing the answer

34 D.4.3 · Climate change 0 / 1

1 Climate evidence, energy budgets and policy

35 Practical · Experimental programme 0 / 1

1 Uncertainty, gradients and model testing