4.2.2.4.6 Pacemakers | Ucademy

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AQA GCSE Biology Masterclass

Welcome

A few notes before you get started
Recommended Reading
Specification

4.1 Cell Biology

Overview of Biology [AQA] (8:12)
4.1.1.1 Eukaryotic and Prokaryotic Cells (6:03)
Eukaryotic and Prokaryotic Cells Quiz
4.1.1.2 Animal and plant cells [Animal Cells] (10:54)
Animal Cells Quiz
4.1.1.2 Animal and plant cells [Plant Cells] (5:24)
Plant Cells Quiz
4.1.1.3 Cell Specialisation (19:42)
Cell Structure Worksheets
4.1.1.4 Cell Differentiation (12:20)
Cell Specialisation and Differentiation Quiz
4.1.1.5 Microscopy (45:03)
Microscopy Quiz
4.1.2.2 Mitosis and the cell cycle [Mitosis] (2:12)
4.1.2.3 Stem Cells (9:10)
Cell Division Quiz
Cell Division Worksheet
4.1.3.1 Diffusion (10:06)
4.1.3.3 Active Transport (5:17)
Cell Transport Quiz
Cell Transport Worksheet
SI Units (5:50)
SI Units Quiz
Notes Submission

4.2 Organisation

4.2.1 Principles of Organisation (6:42)
Principles of Organisation Quiz
Animal Organisation Worksheet
4.2.2.1 The Human Digestive System (13:49)
Digestive System Quiz
4.2.2.2 The Heart and Blood Vessels (17:05)
The Heart and Blood Vessels Quiz
4.2.2.2 The Heart and Blood Vessels [Gas Exchange] (9:56)
Gas Exchange Quiz
Gas Exchange Systems Worksheet
4.2.2.3 Blood (6:44)
4.2.2.4 Coronary heart disease: a non-communicable disease (2:27)
4.2.2.4.1 Types of Heart Diseases (0:31)
4.2.2.4.2 Stents (4:35)
4.2.2.4.3 Bypass Surgery (1:48)
4.2.2.4.4 Statins (0:55)
4.2.2.4.5 Leaky Valves
4.2.2.4.6 Pacemakers (2:40)
4.2.2.4.7 Artificial Hearts (4:40)
4.2.2.5 Health Issues (12:19)
4.2.2.5.1 Sampling (4:56)
4.2.2.6 The effect of lifestyle on some non-communicable diseases (10:31)
Coronary Heart Disease Quiz
4.2.2.7 Cancer (12:00)
Cancer Quiz
4.2.3.1.1 Plant tissues: Leaf Structure (5:30)
4.2.3.1.2 Plant tissues: Leaf Functions (6:45)
4.2.3.2.1 Plant organ system: Structure of Xylem (4:35)
4.2.3.2.2 Structure of the Phloem (4:44)
4.2.3.2.3 Transpiration (5:36)
4.2.3.2.4 Cohesion Tension Theory (5:07)
Plant Organisation Quiz
4.2.3.2.5 Factors Affecting Cohesion (4:31)
4.2.3.2.6 Factors Affecting Transpiration - Temperature (3:14)
4.2.3.2.7 Factors Affecting Transpiration - Humidity (3:05)
4.2.3.2.8 Factors Affecting Transpiration - Wind (2:32)
4.2.3.2.9 Factors Affecting Transpiration - Light Intensity (2:51)
Factors Affecting Transpiration Quiz
4.2.3.2.10 Sucrose (5:34)
4.2.3.2.11 Mass Flow Theory (5:26)
4.2.3.2.12 Translocation (5:59)
4.2.3.2.13 Root Hair Cells (3:41)
Plant Organisation Worksheet
Notes Submission

4.3 Infection and Response

4.3.1.1 Communicable (infectious) diseases (32:16)
Communicable Diseases Quiz
Communicable Diseases Worksheet
4.3.1.1 Communicable (infectious) diseases [Types of Infection] (6:00)
4.3.1.2.1 Viral diseases - Measles (1:52)
4.3.1.2.2 HIV (4:16)
4.3.1.2.3 Treating HIV (1:42)
4.3.1.2.4 TMV (2:56)
4.3.1.2 Viruses Quiz
Viruses Worksheet
4.3.1.3.1 Bacterial diseases - Salmonella (2:36)
4.3.1.3.2 Gonorrhea (3:21)
Bacterial Diseases Quiz
Bacterial Diseases Worksheet
4.3.1.4 Fungal Diseases [Rose Black Spot] (1:43)
4.3.1.5 Protist Diseases [Malaria] (2:53)
Fungi and Protists Quiz
Fungi and Protists Worksheet
4.3.1.6 Human Defence Systems (11:47)
4.3.1.7 Vaccination (18:34)
4.3.1.8 Antibiotics and Painkillers (7:22)
4.3.1.9.1 Discovery and development of drugs [Discovery] (8:24)
4.3.1.9.2 Discovery and development of drugs [Development] (13:32)
4.3.2.1-2 Production and uses monoclonal antibodies (5:57)
Monoclonal Antibodies Quiz
Monoclonal Antibodies Worksheet
Infection and Response Quiz
4.3.3.1 Detection and Identification of Plant Diseases (23:05)
4.3.3.2 Plant Defence Responses (4:37)
Notes Submission

4.4 Bioenergetics

4.4.1.1 Photosynthetic reaction [Intro] (4:53)
4.4.1.1.1 Importance of Oxygen + Glucose (2:31)
4.4.1.2 Rate of Photosynthesis (33:24)
4.4.1.2 Photosynthetic reaction [Inverse Square Law] (4:16)
Photosynthesis Quiz
Photosynthesis Worksheet
4.4.1.3 Uses of glucose from photosynthesis (2:52)
4.4.2.1.1 Aerobic and anaerobic respiration [Aerobic] (2:39)
4.4.2.1.2 Aerobic and anaerobic respiration [Anaerobic respiration] (5:20)
4.4.2.2 Response to Exercise (4:01)
Respiration Quiz
Respiration Worksheet
4.4.2.3 Metabolism (6:37)
Bioenergetics Quiz
Notes Submission

4.5 Homeostasis and Response

4.5.1 Homeostasis Basics (5:03)
4.5.2.1 Structure and Function of the Nervous System (5:48)
Homeostasis Quiz
4.5.2.3.1 The eye [Structure of the Eye] (3:42)
4.5.2.3.2 Vision (4:46)
4.5.2.3.3 Focusing on Near/Distant Objects (4:47)
The Eye Quiz
4.5.2.4.1 Control of body temperature - Thermoregulation Basics (2:10)
4.5.2.4.2 Cooling Down (5:07)
4.5.2.4.3 Heating Up (3:12)
Thermoregulation Quiz
4.5.3.1 Human Endocrine System (2:58)
4.5.3.1.1 Pituitary Gland (6:27)
The Endocrine System Quiz
4.5.3.2 Control of blood glucose concentration [Intro] (3:29)
4.5.3.2.1 High Blood Glucose (4:30)
4.5.3.2.2 Low Blood Glucose (2:44)
4.5.3.2.3 Diabetes (6:58)
4.5.3.2.4 Negative Feedback Cycle (4:44)
Negative Feedback Quiz
4.5.3.3.1 Maintaining water and nitrogen balance in the body - Kidneys (5:50)
Kidney and Waste Removal Quiz
4.5.3.3.2 Dialysis (4:33)
4.5.3.3.3 Dialysis Advantages/Disadvantages (4:04)
4.5.3.4 Hormones in human reproduction (5:56)
4.5.3.4.1 Hormones in human reproduction - Menstrual Cycle 1 (3:04)
4.5.3.4.2 Menstrual Cycle 2 (6:01)
4.5.3.5 Contraception (5:18)
4.5.3.6.1 The use of hormones to treat infertility - IVF (3:09)
4.5.3.6.2 IVF Advantages/Disadvantages (5:06)
Reproduction Quiz
4.5.4.1 Control and coordination [Plant Hormones] (5:02)
Plant Hormones Quiz
Homeostasis and Response Worksheets
Notes Submission

4.6 Inheritance, Variation and Evolution

4.6.1.5 DNA Structure (14:57)
DNA Quiz
4.6.1.5.1 DNA Structure - Proteins (11:18)
4.6.1.5.2 Transcription and Translation (8:00)
4.6.1.5.3 Mutations (2:47)
Proteins Quiz
4.6.1.6 Genetic Inheritance (10:40)
4.6.1.6.1 Key Definitions (4:14)
4.6.1.7.1 Inherited Disorders - Polydactyly (2:19)
4.6.1.7.2.1 Cystic Fibrosis (4:21)
4.6.1.7.2.2 Cystic Fibrosis Punnett Square (4:04)
Inheritance Worksheet
4.6.1.8 Sex Determination (3:56)
4.6.2.1 Variation (5:18)
4.6.2.2 Variation and Evolution (6:17)
4.6.2.3/4 Selective Breeding and Genetic Engineering (16:05)
4.6.2.5 Cloning (2:41)
4.6.3.3 The understanding of genetics [Mendel] (6:07)
4.6.3.7 Resistant Bacteria (6:20)
Adaptations and Evolutions Worksheet
Inheritance, Variation, Evolution and Classification Quiz
Notes Submission

4.7 Ecology

4.7.1.1.1 Communities - Ecosystems and Communities (4:56)
4.7.1.1.2 Interdependence (3:34)
4.7.1.1.3 Competition - Animals (6:45)
4.7.1.1.4 Plants (3:03)
4.7.1.1.5 An Introduction to Abiotic & Biotic Factors (1:50)
4.7.1.2 Abiotic Factors (5:38)
4.7.1.3 Biotic Factors (2:02)
Ecology Quiz
4.7.2.1 Levels of Organisation (3:53)
4.7.2.2 How materials are cycled [Carbon Cycle] (4:17)
Carbon Cycle Quiz
Carbon Cycle Worksheet
4.7.2.2 How materials are cycled [Water Cycle] (3:09)
The Water Cycle Quiz
The Water Cycle Worksheet
Sampling Quiz
Sampling Worksheet
4.7.2.3 Decomposition (4:05)
Decomposition Quiz
Decomposition Worksheet
4.7.2.4 Impact of Envrionmental Change (8:37)
4.7.3.1 Biodiversity (9:07)
4.7.3.2 Waste Management (3:42)
4.7.3.3 Land Use (6:19)
4.7.3.4 Deforestation (2:26)
4.7.3.5 Global Warming (5:51)
4.7.3.6 Maintaining Biodiversity (8:24)
Biodiversity Quiz
Biodiversity Worksheet
4.7.4.1 Trophic Levels (10:53)
4.7.4.2-3 Pyramids and Transfer of Biomass (14:23)
Trophic Levels Quiz
Trophic Levels Worksheet
4.7.5.1 Factors Affecting Food Security (7:32)
4.7.5.2 Farming techniques (4:30)
4.7.5.3 Sustainable Fisheries (3:08)
4.7.5.4 Biotechnology (7:51)
Food Production Quiz
Food Production Worksheet
Adaptations, Interdependence and Competition Quiz
Adaptations, Interdependence and Competition worksheet
Ecology Worksheets
Biology Practicals (64:53)
Notes Submission

Working Scientifically

Observations and Hypothesis (4:40)
How Scientific Theories and Methods Develop Over Time (5:37)
Visual Models (2:19)
Different Types of Visual Models (5:42)
Fermi Paradox (4:41)
Factors to Consider Outside of Science (1:06)
Ethical, Personal, and Social Issues with Science (7:00)
Powers of Science (1:13)
Limitations of Science (4:57)
Perception of Risk: Familiar and Unfamiliar Risks (3:53)
Perception of Risk: Imposed and Voluntary Risks (5:35)
Perception of Risk: Visible vs. Invisible Hazards (2:19)
The Importance of Peer Review (6:14)
Interpreting Observations and Other Data (4:46)
Measurement Uncertainties (6:10)

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4.2.2.4.6 Pacemakers

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