Welcome to Learnbiology.net A-level biology revision and practice.

The A-Level biology content on Learnbiology.net is organised by broad biological subcategory (e.g. Biochemistry, Genetics, Ecology etc). You'll notice too, that there is quite a lot of overlap between biological sub-disciplines, for example cellular respiration is an important topic in biochemistry and cell biology, and mitosis and meiosis are core topics in cell biology and genetics (which is why your synoptic essays are of such importance!).

 

Since A-Level Biology is such a large and diverse subject it stands to reason that there is a lot of content on the site, so you may find the search bar very useful if you're looking for a particular topic / subject area.

 

When you click on a category tab (below) you’ll be taken to that page, which will bring you to a list of topics within that section of A-Level biology.

A-Level Biology Revision Videos

Below you will find a list of A-Level Biology revision videos (arranged alphabetically). The hand written A-level biology revision videos are a fantastic way for you to learn and revise some important concepts and topics covered in A-Level Biology (Level 3 Biology) courses...

 

Each video has a corresponding knowledge check PDF and revision notes poster which you can download and use as an essential learning and revision aid.

 

The interactive knowledge check PDFs really will take your learning/revision to the next level as they can be used along with the video. The knowledge check questions have properly, fully written answers to help you confidently learn and revise A-level biology.

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

 

A

B

C

D

E

F

G

H

I

L

M

N

O

P

R

T

V

W

 Adenosine Triphosphate - ATP  Structure, The ATP-ADP cycle and the Important Properties of ATP

 Amino Acids structure, dipeptides and polypeptides

 Anaerobic V Aerobic Respiration (SuperNotes)

★ Antibody Structure and Function

★ Arteries and Arterioles

★ B-Cells in the immune system response

★ Benedict's test for sugars

 Binary Fission - Prokaryote Cell Division

★ Biochemical basis of life: Phylogenetic trees and the 4 biological molecules you must know. (Download the Free Knowledge Check PDF to accompany this video)

★ Biodiversity and Statistics: -Analysing the effect of Agriculture on Biodiversity using Spearman's Rank correlation coefficient

★ Biuret test for Proteins

★ Calculating the Mitotic index

★ Capillaries

★ Cardiac cycle

★ Cardiac Cycle - Graph interpretation

★ Cardiovascular system - Simple Overview

★ Cellular Respiration : - 2 types of Respiration | Anaerobic Respiration

★ The Chloroplast - The site of Photosynthesis

Chromosome structure

★ Counter Current Exchange Principle

★ Diffusion (Passive / Simple / Lipid Diffusion)

Diploid: Defining & understanding what diploid means

 DNA a brief history and the Structure of DNA

DNA: How DNA is stored in cells

★ Electrophoresis

★ ELISA Test - The use of Antibodies in Medicine

★ Emulsion Test for Lipids

★ Enzyme Action: - Lock and Key Vs Induced Fit

Enzymes: - The Basic properties of Enzymes

★ Enzymes Lower Activation Energy

Enzymes: - Factors affecting enzyme activity

★ Eukaryotic Cell Cycle

Facilitated Diffusion

 Factors Affecting the Rate of Passive & Facilitated Diffusion

★ Factors Affecting the Rate of Osmosis

Fish Gill Structure

Gas exchange by the leaves of dicotyledonous plants (mesophyll and stomata)

★ Gene Mutations

 Genes and non coding DNA

★ Genetic Fingerprinting using Variable Number Tandem Repeats (VNTRs)

★ Glycolysis (SuperNotes)

 

★ Hardy-Weinberg Equilibrium

★ Heart Valves

Heart Structure (Mammalian Heart)

★ HIV Virus Structure, Infection of T-cells & graph interpretation

★ HIV Viral Replication Cycle

★ Hydrolysis and Condensation reactions - Making and breaking polymers.

Insect tracheal system

★ Iodine test for starch

 

Lipid: Structure & Formation of Triglycerides.

Lipids: The Properties of Triglycerides

★ Making cDNA using the Enzyme Reverse Transcriptase

★ Measuring Lung Function and graph interpretation

★ Mitosis

★ Meiosis

★ Monosaccharides and Disaccharides

★ Nucleotide Structure and Polynucleotides

★ Osmosis (SuperNotes)

★ Osmosis and Aquaporins

★ Osmosis in Plant Cells:  Stomatal regulation and Osmosis

★ Osmosis: - An Overview of Osmosis

★ Osmosis: - Key Terms you must use when explaining Osmosis

 PCR - The Polymerase Chain Reactions (Amplifying DNA In Vitro using PCR)

Phagocytosis

★ Phospholipid structure and function

★ Photosynthesis: - An Overview of Photosynthesis

★ Photosynthesis: - The Light Dependent Reactions

★ Photosynthesis: - The Light Independent Reactions - The Calvin Cycle

★ Phylogeny: -Classification of Organisms

★ Polysaccharides, Starch (Amylose & Amylopectin), Glycogen and Cellulose

★ Prokaryote Structure

★ Protein structure: The 4 Levels of Protein structure.

★ Protein shape and function. Enzymes & Antibodies

 RNA Structure

RNA: - The Structure and Function of mRNA and tRNA

 T-Cells and Antigens

T-Cells in the immune system response

★ Taxonomy - Classification of Organisms

★ Tissue Fluid Formation

★ Transcription (inc. RNA Splicing)

★ Transcription & Translation: A Summary of Protein synthesis

★ Tuberculosis (TB) - Lung Disease

 Veins

 Viral Replication

★ Virus Basic Structure

   Water: - The Structure of water

Water: - The Important Properties of water

★ What is Recombinant DNA & The central dogma of molecular Biology