The Whole of OCR-A A-Level Biology | Module 4: Biodiversity, evolution and disease | Revision

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00:00:00 Start
00:00:30 Pathogens
00:02:54 defences against pathogens
00:06:45 Antigens
00:08:07 Phagocytosis
00:09:10 T lymphocytes
00:10:27 B lymphocytes
00:11:47 Antibodies
00:14:51 Vaccines and immunity
00:18:07 Autoimmune diseases
00:18:52 Possible sources of medicines
00:20:17 Antibiotic resistance
00:22:24 Ecosystems, populations and communities
00:24:05 Species diversity
00:25:12 Investigating biodiversity
00:33:30 Factors affecting biodiversity
00:38:41 Reasons for maintaining biodiversity
00:41:59 Types of conservation
00:48:04 Classification and taxonomy
00:52:17 Species
00:52:44 Features used in classification
00:57:07 Intraspecific and interspecific variation.
00:59:13 Evidence for natural selection
01:02:22 Mean, standard deviation and stats tests
01:06:51 Natural selection

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