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Unit 7 of 7

Additional lessons

IB Biology HL · 101 lessons · 0 quizzes

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3.7.2

Barriers to Pathogens: Skin and Mucous Membranes20 min

3.7.3

Blood Clotting20 min

3.7.4

The Immune System20 min

3.7.5

White Blood Cells20 min

3.7.6

Adaptive Immune Response20 min

3.7.7

HIV and AIDS20 min

3.7.8

Antibiotics20 min

3.7.9

Antibiotic Resistance20 min

3.7.12

Evaluating COVID-19 Data- Skills20 min

3.8.1

Populations in Ecosystems20 min

3.8.2

Estimating Population Size20 min

3.8.3

Limiting Population Size20 min

3.8.4

Limiting Population Size: Examples20 min

3.8.5

Population Growth Curves: Skills20 min

3.8.6

Populations: Intraspecific Relationships20 min

3.8.7

Community: Interspecific Relationships20 min

3.8.8

Interspecific Competition20 min

3.8.9

Chi-Squared Test: Skills20 min

3.9.1

Ecosystems as Open Systems20 min

3.9.2

Energy Flow in Ecosystems20 min

3.9.3

Obtaining Carbon Compounds in Ecosystems20 min

3.9.4

Trophic Levels20 min

3.9.5

Pyramids of Energy: Skills20 min

3.9.6

Energy Losses20 min

3.9.7

Primary and Secondary Production20 min

3.9.8

The Carbon Cycle20 min

3.9.9

Nutrient Cycling20 min

4.1.2

Electrophoresis and PCR20 min

4.1.3

Electrophoresis and PCR: Applications20 min

4.2.1

Transcription in Protein Synthesis20 min

4.2.2

Translation in Protein Synthesis20 min

4.2.3

The Genetic Code20 min

4.2.4

Protein Structure and Mutations20 min

4.2.5

Mechanism of Transcription20 min

4.2.6

Post-Transcriptional Modification20 min

4.2.7

Translation and the Proteome20 min

4.3.1

Gene Mutations20 min

4.3.2

Consequences of Gene Mutations20 min

4.3.3

Mutations and Genetic Variation20 min

4.3.5

Conserved Sequences20 min

4.4.1

Cell Division20 min

4.4.3

4.4.4

Mitosis- Skills20 min

4.4.5

4.4.6

Cell Cycle20 min

4.4.7

Uncontrolled Cell Division and Tumour Formation20 min

4.4.8

Mitotic Index- Skills20 min

4.5.2

Regulating Transcription and Translation20 min

4.5.3

Environment and Gene Expression20 min

4.5.4

Environment and Gene Expression- Examples20 min

4.6.1

4.6.2

Osmosis in Cells20 min

4.6.3

Osmosis- Skills20 min

4.6.5

Water Movement in Plant Tissue20 min

4.7.1

Sexual and Asexual Reproduction20 min

4.7.2

Sexual Reproduction20 min

4.7.3

The Menstrual Cycle20 min

4.7.4

Fertilisation20 min

4.7.5

Plant Reproduction20 min

4.7.6

Pollination20 min

4.7.7

Seed Dispersal and Germination20 min

4.7.8

Hormones and Puberty20 min

4.7.9

Gametogenesis20 min

4.7.10

Fertilisation and Implantation20 min

4.7.11

Hormones in Pregnancy20 min

4.7.12

The Placenta20 min

4.7.13

Hormone Replacement Therapy20 min

4.8.1

Genetic Inheritance and Genetic Crossing20 min

4.8.2

Inheritance: Terminology20 min

4.8.3

Inheriting Alleles20 min

4.8.4

Sex Determination20 min

4.8.5

Pedigree Charts20 min

4.8.6

Continuous Variation: Skills20 min

4.8.7

Dihybrid Crosses and Unlinked Genes20 min

4.8.8

Statistical Analysis of Dihybrid Crosses20 min

4.8.9

Genes and Polypeptides: Skills20 min

4.8.10

Gene Linkage20 min

4.8.11

Identifying Recombinants20 min

4.9.1

Homeostasis: Maintaining the Internal Environment20 min

4.9.2

Regulation of Blood Glucose20 min

4.9.3

Thermoregulation20 min

4.9.4

Osmoregulation and Excretion20 min

4.9.5

Production of Urine20 min

4.9.6

Changes in Blood Supply to Organs20 min

4.10.2

Selection Pressures20 min

4.10.3

Selection Pressures: Skills20 min

4.10.4

Gene Pools20 min

4.10.5

Allele Frequencies: Skills20 min

4.10.6

Types of Natural Selection20 min

4.10.7

Hardy-Weinberg Principle20 min

4.10.8

Artificial Selection20 min

4.11.1

Stability in Ecosystems20 min

4.11.2

Ecosystem Stability: Skills20 min

4.11.3

Keystone Species20 min

4.11.4

Sustainability in Ecosystems and Agriculture20 min

4.11.5

Eutrophication20 min

4.11.6

The Effects of Pollution20 min

4.11.7

Restoring Ecosystems20 min

4.11.8

Ecological Succession20 min

4.11.9

Human Influence on Succession20 min

4.12.3

Carbon Sequestration20 min