biorach

A2 Biology - DNA profiling (OCR A Chapter 21.1)

10:37

A2 Biology - Resting potential and action potential (OCR A Chapter 13.4)

11:23

AS Biology - Pathogens and transmission (OCR A Chapter 12.1-3)

16:40

AS Biology - Immune response OVERVIEW (OCR A Chapter 12.5-6)

25:22

A2 Biology - Transcriptional control of gene expression (OCR A Chapter 19.2)

5:45

A2 Biology - Biotechnology overview (OCR A Chapters 22.4-8)

16:00

A2 Biology - Endocrine system and hormone types (OCR A Chapter 14.1)

5:37

A2 Biology - The brain (OCR A Chapter 13.7)

8:22

A2 Biology - Plant hormones OVERVIEW (OCR A Chapter 16)

18:17

AS Biology - Phagocytosis (OCR A Chapter 12.5)

5:27

A2 Biology - Monogenic inheritance (OCR A Chapter 20.2)

17:57

A2 Biology - The liver (OCR A Chapter 15.4)

16:58

A2 Biology - Aerobic respiration stage 4: Oxidative phosphorylation (OCR A Chapter 18.4)

6:42

AS Biology - Variation (OCR A Chapter 10.5)

11:42

AS Biology - Cell-mediated immunity (OCR A Chapter 12.6)

3:30

A2 Biology - Hardy-Weinberg principle (OCR A Chapter 20.5)

16:30

AS Biology - Humoral immunity (OCR A Chapter 12.6)

5:15

A2 Biology - Genetic engineering (OCR A Chapter 21.4)

25:16

AS Biology - Mammalian heart structure (OCR A Chapter 8.5)

8:50

AS Biology - Translocation (1): Phloem loading (OCR A Chapter 9.4)

6:49

AS Biology - Cell cycle (OCR A Chapter 6.1)

7:45

AS Biology - Evidence for evolution (OCR A Chapter 10.4)

6:32

A2 Biology - Structure and function of the adrenal gland (OCR A Chapter 14.1)

6:38

AS Biology - Translation (OCR A Chapter 3.10)

6:15

AQA GCSE - B1.6-10 Cell transport OVERVIEW

21:41

A2 Biology - Selective reabsorption (OCR A Chapter 15.5)

7:47

A2 Biology - Respiratory substrates (OCR A Chapter 18.6)

4:47

AS Biology - T- and B-lymphocytes (OCR A Chapter 12.6)

6:55

AS Biology - Plant defences against pathogens (OCR A Chapter 12.4)

8:12

A2 Biology - Nephron structure (OCR A Chapter 15.5)

4:42

A2 Biology - Translational and post-translational gene expression control (OCR A Chapter 19.2)

3:41

AS Biology - Transpiration (OCR A Chapter 9.3)

15:22

AS Biology - Carbon dioxide transport in red blood cells (OCR A Chapter 8.4)

6:39

A2 Biology - Tropisms (OCR A Chapter 16.4)

8:04

A2 Biology - Role and control of synapses (OCR A Chapter 13.5)

4:36

AS Biology - Basics of enzymes (OCR A Chapter 4.1)

3:57

A2 Biology - Cholinergic synapses (OCR A Chapter 13.5)

9:59

A2 Biology - Organisation of the nervous system (OCR A Chapter 13.6)

4:20

A2 Biology - Chloroplast structure (OCR A Chapter 17.3)

4:05

AS Biology - Gas exchange in insects (OCR A Chapter 7.4)

7:31

AS Biology - Cardiac cycle (OCR A Chapter 8.5)

15:24

A2 Biology - Phenotypic ratios (OCR A Chapter 20.4)

14:15

A2 Biology - Structure of the sliding filament model (OCR A Chapter 13.9-10)

11:04

AS Biology - Nucleotide structure (OCR A Chapter 3.8)

9:07

A2 Biology - Calvin cycle: The light-independent stage (OCR A Chapter 17.3)

5:51

AS Biology - Celllulose structure (OCR A Chapter 3.3)

5:32

AS Biology - Oxygen dissociation curve (OCR A Chapter 8.4)

13:26

A2 Biology - Histology of the pancreas (OCR A Chapter 14.2)

7:14

A2 Biology - Controlling heart rate (OCR A Chapter 14.6)

9:52

A2 Biology - Aerobic respiration stages 2-3: Link reaction + Krebs cycle (OCR A Chapter 18.2-3)

5:42

A2 Biology - Reflexes (OCR A Chapter 13.8)

11:23

AS Biology - Tissue fluid formation (OCR A Chapter 8.3)

6:55

A2 Biology - Nitrogen cycle (OCR A Chapter 23.3)

4:42

A2 Biology - Mechanism of sliding filament model (OCR A Chapter 13.10)

6:31

AS Biology - Biodiversity and sampling OVERVIEW (OCR A Chapters 11.1-5)

15:45

A2 Biology - DNA sequencing (OCR A Chapter 21.2)

8:01

AS Biology - Translocation (2): Mass flow & Phloem unloading (OCR A Chapter 9.4)

3:22

A2 Biology - Action of adrenaline (OCR A Chapter 14.5)

6:11

AS Biology - Transcription (OCR A Chapter 3.10)

4:50

AS Biology - Transport systems in plants (OCR A Chapter 9.1)

16:45