Edexcel Biology Checklist
Double Award EXAM
VIDEO Q&A
Topic 1. Key Concepts in biology
Video: Eukaryotic and prokaryotic cells
• Compare the structure of animal and plant cells
• Label typical and atypical prokaryotic cells
• Compare prokaryotic and eukaryotic cells
Video: Microscopes and magnification
• Compare light and electron microscopes
• Describe how to use a microscope to view prepared animal and plant cells
• Maths Skill: To calculate magnification and the actual size of cells.
Video: Microscope drawing and measuring cell size
• Estimate cell size based on the diameter of the field of view
• Draw low and high plan drawings from microscopes
Video: Specialised cells
• Describe how some specialised cells are adapted for their function
• Describe the adaptations of the gametes
• Compare cilia and microvilli.
Video: Orders of magnitude and standard form
• Practice converting units
• Practice writing numbers in standard form
• Calculate differences in orders of magnitude
• Multiply and divide numbers in standard form
Video: Enzymes
• Describe enzyme structure and how they work
• Describe and explain the factors that affect enzyme reactions with reference to
typical rates of reaction graphs
Video: Core Practical: investigating enzymes and
calculating the rate of reaction
• Describe how to conduct a rates of reaction investigation on the effect of pH on
amylase
• Calculate and plot the rate of reaction
Video: Core Practical: food tests
• Describe how to use a chemical reagent to test the presence of a food group in a
food sample
• Describe how to calculate the energy content of foods using bomb calorimetry
The leading source of online video tutorials dedicated to the 9-1 Science GCSEs © my-GCSEscience.com
Edexcel Biology Checklist
Double Award EXAM
VIDEO Q&A
Video: Enzymes in digestion
• Describe the role of enzymes in digestion
• Describe the substrates and products for each class of digestive enzyme
• State where each of the class’ of digestive enzyme can be found in the digestive
system
Video: Core Practical: osmosis in potatoes
• Define osmosis
• Explain what could happen to animal and plant cells, due to osmosis, if the water
concentration is not regulated
• Investigate how the concentration of a solution could affect the change in mass
Video: Diffusion and active transport
• Define diffusion and active transport
• Describe the role of carrier proteins in active transport
• Compare active and passive transport
Topic 2. Cells and control
Video: Cell division
• Describe what happens in the different stages of mitosis
• Describe the process of cell differentiation in mammals and cell elongation in
plants
• Describe how percentile charts are used to monitor development
• Explain what is meant by cancer
Video: Stem cells
• Define a stem cell
• Describe the difference between embryonic and adult stem cells
• State that stem cells in plants are found in their meristems
Video: The nervous system
• Describe the structure of the nervous system
• Explain how the components of the nervous system can produce a coordinated
response
• Explain how the structure of a reflex arc is related to its function
• Describe the role of synapses
The leading source of online video tutorials dedicated to the 9-1 Science GCSEs © my-GCSEscience.com
Edexcel Biology Checklist
Double Award EXAM
VIDEO Q&A
Topic 3. Genetics
Video: DNA and the human genome project
• Describe DNA as a polymer made up of 2 strands colied to form a double helix
• Describe how DNA can be extracted from fruit
• Describe the genome as the entire DNA of an organism and a gene as a section
of DNA
• Discuss the outcomes of the Human Genome and its potential applications in
medicine
Video: Genetic diagrams
• Distinguish between the terms dominant, recessive, homozygous and
heterozygous
• Explain the inheritance of characteristics using Punnett squares
• Explain why there is a 50% chance of the inheritance of a particular gender.
Video: Variation and mutation
• State that the genetic variation in a population is due to mutations
• Appreciate that some mutations do, while other mutations do not affect the
organism’s phenotype
• Compare variation caused by genes and the environment
Video: Asexual and sexual reproduction and meiosis
• Compare and evaluate sexual and asexual reproduction
• Compare and evaluate mitosis and meiosis
• Describe the stages in meiosis
Video: Fractions, ratio, proportion and probability
• Apply the concept of probability in the context of inherited diseases
• Analyse genetic cross using ratios, fractions and percentages [Maths Skills]
Topic 4. Natural Selection and genetic modification
Video: Selective breeding
• Define selective breeding
• Explain the impact of selective breeding on food plants and domesticated
animals
• Evaluate the process of selective breeding.
Video: Genetic engineering
• Evaluate genetic engineering
• Describe how bacteria can be genetically engineered to produce insulin [Higher
Tier]
The leading source of online video tutorials dedicated to the 9-1 Science GCSEs © my-GCSEscience.com
Edexcel Biology Checklist
Double Award EXAM
VIDEO Q&A
Video: Natural selection
• Describe the process of natural selection as a driving force for evolution
Video: Human evolution
• Describe the evidence for human evolution based on fossils
• Describe the evidence for human evoultion based on stone tools
Video: Classification and evolutionary trees
• Describe how organisms are classified into 5 kingdoms
• Explain why genetic analysis has altered the classification of life to include the 3
domains
Topic 5. Health, disease and the development of medicines
Video: Health and disease
• Define health
• Compare communicable and non-communicable disease
• Explain why the presence of one disease can lead to an increased susceptibility
to other diseases
• Describe the symptoms of some common infections and how they are spread
and prevented
• Define and give examples of pathogens
Video: Cardiovascular disease
• Describe a range of different forms of cardiovascular disease
• Describe and evaluate the treatments available for each type of issue associated
with the circulatory system
Video: Immunity and vaccination
• Recap the body’s first line of defence (non-specific immunity)
• Describe the role of phagocytes in non-specific immunity
• Describe the role of lymphocytes in the body’s second line of defence (specific
immunity)
• Describe how vaccines generate antibodies to provide immunity to
communicable diseases
Video: Non-communicable disease
• Describe the risk factors associated with cardiovascular disease including the
effect of smoking
• Describe the effect of obesity on cardiovascular disease, as well as diabetes
• Describe how BMI and waist-to-hip-ratio measurements can diagnose obesity
• Describe some mineral deficiency illnesses are caused by malnutrition
• Describe how alcohol can influence the liver
The leading source of online video tutorials dedicated to the 9-1 Science GCSEs © my-GCSEscience.com
Edexcel Biology Checklist
Double Award EXAM
VIDEO Q&A
Video: Antibiotics and drug trials
• Define what an antibiotic is and describe how they were discovered
• Explain why antibiotics are ineffective against viral infections
• Describe the process of discovery, development and trialling of new medicines
• Explain how bias is reduced in drug trialling
Topic 6. Plant Structures and their functions
Video: Limiting factors
• Explain the effects of temperature, light intensity and carbon dioxide
concentration as limiting factors of photosynthesis
• Explain how the interactions of these limiting factors can be helpful in
maximising plant yield
Video: Investigating photosynthesis
• Describe how light intensity affects the rate of photosynthesis
• Apply the principle of the inverse square law (Higher Tier only and a Maths skill)
• Calculate the rate of reaction (Maths skills)
Video: Photosynthesis
• Describe how glucose is used in a plant
• Describe the process of photosynthesis and explain why it is an endothermic
reaction
Video: Transpiration
• Explain the effect of a variety of environmental factors on the rate of water
uptake by a plant
• Describe how a simple potometer can be used to investigate a factor that
affects the rate of water uptake in plants
Video: Plant tissues
• Describe the adaptations of the tissues in a leaf
• Explain how water and mineral ions are taken up by plant roots, relating the
structure of root hair cells to this function
• Explain how the structure of the xylem and phloem are adapted to their function
in the plant
The leading source of online video tutorials dedicated to the 9-1 Science GCSEs © my-GCSEscience.com
Edexcel Biology Checklist
Double Award EXAM
VIDEO Q&A
Topic 7. Animal coordination, control and homeostasis
Video: The menstrual cycle foundation
• Describe the stages in the menstrual cycle, including the roles of the hormones
oestrogen and progesterone, in the control of the menstrual cycle
• Explain how hormonal contraception works
• Evaluate hormonal and barrier methods of contraception
Video: The endocrine system
• Describe the principles of hormonal control in the endocrine system
• Name some of the endocrine glands
• Compare hormonal and nervous control
Video: Adrenalin and Thyroxine
• Explain the role of thyroxine and adrenalin in the body
• Explain why thyroxine is an example of negative feedback
Video: The menstrual cycle higher
• Explain the interactions of oestrogen, progesterone, FSH, LH in the control of
the menstrual cycle, including the repair and maintenance of the uterus wall,
ovulation and menstruation
• Explain the use of hormones in ART including IVF and clomifene therapy
Video: Thermoregulation
• Explain that thermoregulation takes place with reference to the role of the
dermis, epidermis and the hypothalamus
• Explain the role of shivering in thermoregulation
• Explain the role of vasodilation and vasoconstriction in thermoregulation [Higher
Tier]
Video: Controlling blood glucose levels
• Explain how insulin controls blood sugar levels in the body
• Explain how glucagon interacts with insulin to control blood sugar levels in the
body [Higher Tier]
• Compare type 1 and type 2 diabetes and explain how they should be treated
• Evaluate the correlation between BMI and type 2 diabetes
The leading source of online video tutorials dedicated to the 9-1 Science GCSEs © my-GCSEscience.com
Edexcel Biology Checklist
Double Award EXAM
VIDEO Q&A
Topic 8. Exchange and transport in animals
Video: Diffusion
• Explain the need for exchange surfaces and a transport system in multicellular
organisms including the calculation of surface area:volume ratio
• Explain how alveoli and microvilli are adapted for gas exchange by
accommodating Fick’s law of diffusion
Video: The circulatory system
• Explain how red blood cells and plasma are adapted for transport
• Describe the structure of the double circulatory system
• Explain how the structure of the heart and blood vessels are adapted to their
function
• Calculate heart rate, stroke volume, and cardiac output
Video: Respiration
• Describe respiration as an exothermic reaction that releases energy
• Compare aerobic and anaerobic respiration
• Describe how to use a simple respirometer to investigate the effect of
temperature on the rate of respiration [Core Practical]
• Calculate the rate of respiration [Math skill]
Topic 9. Ecosystems and material cycles
Video: Interdependence
• Describe how ecosystems are organised
• Explain how biotic and abiotic factors affect communities
• Describe how species interact in a community by referring to competition and
predator-prey cycles.
Video: Core Practical: sampling in ecosystems
• Describe how quadrats can be used to estimate the population of an organism in
a habitat
• Describe how to use transects with quadrats to investigate the effect of an
abiotic factor on the distribution of a plant species
• Describe how to minimise bias in an ecological study.
Video: Cycling in ecosystems
• Describe how carbon, nitrogen and water are cycled in ecosystems
• Describe the role of decomposers in the cycling of nutrients in ecosystems
• Describe the process of producing potable water in areas of drought including
desalination
The leading source of online video tutorials dedicated to the 9-1 Science GCSEs © my-GCSEscience.com
Edexcel Biology Checklist
Double Award EXAM
VIDEO Q&A
Video: Biodiversity
• Describe the positive and negative impacts of fish farming on biodiversity
• Describe the process of eutrophication and its impact on biodiversity
• Describe the effects of introducing a non-indigenous species to an ecosystem
• Explain the importance of conservation in maintaining biodiversity, including the
role of reforestation and captive breeding programmes
The leading source of online video tutorials dedicated to the 9-1 Science GCSEs © my-GCSEscience.com
