IB Biology HL B2.3.3 Stem Cell Niches in Adult Humans Topic Practice

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A Unity and Diversity

B Form and Function

B1.1 Carbohydrates and lipids

B2.1 Membranes and membrane transport

B2.2 Organelles and compartmentalization

B2.3 Cell specialization

B2.3.1—Differentiation after fertilization

B2.3.2—Properties of stem cells

B2.3.3—Stem cell niches in adult humans

B2.3.4—Types of stem cells

B2.3.5—Cell size as specialization

B2.3.6—Surface area-to-volume ratios

B2.3.7 (HL)—Adaptations to increase SA:V

B2.3.8 (HL)—Pneumocytes in alveoli

B2.3.9 (HL)—Cardiac and striated muscle

B2.3.10 (HL)—Gamete adaptations

B3.1 Gas exchange

B3.3 Muscle and motility [HL only]

B4.1 Adaptation to environment

B4.2 Ecological niches

C Interaction and Interdependence

D Continuity and Change

IB/Biology/HL//Question Bank/B Form and Function/B2.3 Cell specialization/B2.3.3—Stem cell niches in adult humans

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