Course Content
Biological Molecules
0/3
Role of Enzymes
Temperature & Enzyme Function
pH & Enzyme Function
Movement of Substances Into & Out of Cells
0/2
Diffusion, Osmosis & Active Transport
Factors Affecting the Rate of Movement of Substances
Respiration
0/3
Process of Respiration
Aerobic & Anaerobic Respiration
Practical: Investigating Respiration
Gas Exchange
0/9
Gas Exchange in Plants
Leaf Adaptations for Gas Exchange
Gas Exchange: Night vs Day
Practical: The Effect of Light on Gas Exchange in Plants
Structure of the Breathing System
Role of the Intercostal Muscles & Diaphragm
Alveoli: Adaptations for Gas Exchange
Smoking & the Gas Exchange System
Practical: The Effect of Exercise on Breathing
Transport System
0/3
Role of the Xylem & Phloem
Absorption of Water by Root Hair Cells
Transpiration
Excretion
0/5
Kidney: Excretion & Osmoregulation
Structure of the Urinary System
Nephron Structure
Nephron Function
ADH & Composition of Urine
Co-ordination & Response
0/9
Homeostasis
Human Nervous System
Role of Neurotransmitters at Synapses
Simple Reflex Arc
The Human Eye: Structure
The Human Eye: Function
The Role of Skin in Temperature Regulation
The Role of Hormones: Basic
The Role of Hormones: Advanced
Nutrition
0/6
Plants & Mineral Ions
Balanced Diet
Peristalsis
Role of Digestive Enzymes
Bile
Small Intestine: Structure & Adaptations
Reproduction
0/11
Sexual & Asexual Reproduction: Differences
Gametes & Fertilisation
Adaptations for Pollination
The Process of Fertilisation in Plants
Germinating Seeds
Asexual Plant Reproduction
Human Reproductive Systems
Roles of FSH & LH in the menstrual cycle
Role of the Placenta
Roles of Oestrogen & Progesterone in the Menstrual Cycle
Amniotic Fluid
Inheritance
0/12
The Genome & Genes
DNA Structure
RNA Structure
Stages of Protein Synthesis
Alleles
Codominance
Monohybrid Inheritance: Genetic Diagrams
Sex Chromosomes
Mitosis
Meiosis
Diploid vs Haploid
Mutation
Genetic Modification (Genetic Engineering)
0/4
The Process of Genetic Modification
Manufacturing Human Insulin
GM Plants & Food Production
Transgenic
Edexcel IGCSE Biology
    About Lesson

    Amniotic Fluid

     

    Clear and watery, amniotic fluid is a key component within the amniotic sac, contributing to the overall protective environment of the developing fetus.

     

    Function: 

     

    • Acts as a cushion, protecting the fetus from external forces. 
    • Promotes the development of the fetal lung and digestive systems. 
    • Facilitates symmetrical growth and movement throughout gestation.

    Function of the Placenta and Umbilical Cord in Nutrient and Gas Exchange:

     

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