A3.1.5 Difficulties in Distinguishing Species Question Bank | Eduninja

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A Unity and Diversity

A1.2 Nucleic acids

A2.1 Origins of cells

A2.2 Cell structure

A2.3 Viruses [HL only]

A3.1 Diversity of organisms

A3.1.1—Variation as defining feature of life

A3.1.2—Species as groups with shared traits

A3.1.3—Binomial system

A3.1.4—Biological species concept

A3.1.5—Difficulties in distinguishing species

A3.1.6—Diversity in chromosome numbers

A3.1.7—Karyotyping and karyograms

A3.1.8—Unity and diversity of genomes within species

A3.1.9—Diversity of eukaryote genomes

A3.1.10—Comparison of genome sizes

A3.1.11—Whole genome sequencing

A3.1.12 (HL)—Difficulties with biological species concept

A3.1.13 (HL)—Chromosome number as shared trait

A3.1.14 (HL)—Dichotomous key development

A3.1.15 (HL)—Environmental DNA barcodes

A3.2 Classification and cladistics [HL only]

A4.1 Evolution and speciation

A4.2 Conservation of biodiversity

B Form and Function

B1.1 Carbohydrates and lipids

B2.1 Membranes and membrane transport

B2.2 Organelles and compartmentalization

B2.3 Cell specialization

B3.1 Gas exchange

B3.3 Muscle and motility [HL only]

B4.1 Adaptation to environment

B4.2 Ecological niches

C Interaction and Interdependence

C1.1 Enzymes and metabolism

C1.2 Cell respiration

C1.3 Photosynthesis

C2.1 Chemical signalling [HL only]

C2.2 Neural signalling

C3.1 Integration of body systems

C3.2 Defence against disease

C4.1 Populations and communities

C4.2 Transfers of energy and matter

D Continuity and Change

D1.1 DNA replication

D1.2 Protein synthesis

D1.3 Mutation and gene editing

D2.1 Cell and nuclear division

D2.2 Gene expression [HL only]

D2.3 Water potential

D3.1 Reproduction

D3.2 Inheritance

D3.3 Homeostasis

D4.1 Natural selection

D4.2 Stability and change

D4.3 Climate change

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