This GCSE Combined Science Biology Revision features all topics in summary and key equations and revision you need to easily hit top grades. It includes all key aspects in a summarized and efficient way. To have more in depth and understandable revision have a look at the GCSE Biology Lessons creat...
GCSE Biology Revision Booklet
1. Cells and Control
Cell Structure and Organisation
● Prokaryotic vs. Eukaryotic Cells: Prokaryotes lack a nucleus,
eukaryotes have a nucleus.
● Plant and Animal Cells: Differences and similarities (e.g., chloroplasts,
cell wall in plants).
● Specialized Cells: Adaptations and functions (e.g., nerve cells, root
hair cells).
Microscopy
● Types of Microscopes: Light microscopes vs. electron microscopes.
● Magnification and Resolution: Calculating magnification,
understanding resolution.
Mitosis and the Cell Cycle
● Stages of the Cell Cycle: Interphase, mitosis, cytokinesis.
● Phases of Mitosis: Prophase, metaphase, anaphase, telophase.
Stem Cells
● Types of Stem Cells: Embryonic vs. adult stem cells.
● Uses and Ethics: Applications in medicine, ethical considerations.
● Transcription and Translation: From DNA to mRNA to protein.
● Role of Ribosomes and tRNA: Site of protein synthesis and
translation process.
Inheritance
, ● Mendelian Genetics: Dominant and recessive alleles, homozygous
and heterozygous.
● Punnett Squares: Predicting genetic crosses and inheritance
patterns.
● Sex Determination: Role of X and Y chromosomes.
● Primary and Secondary Defenses: Physical barriers, white blood
cells, antibodies.
● Vaccination: How vaccines work, herd immunity.
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