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AQA GCSE Biologyexam For Exam

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15 pages

Written in 2024/2025

Grade A+

AndrewBenson

AQA GCSE Biology exam For Exam

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10 pages

Written in 2024/2025

Grade A+

AndrewBenson

GCSE BIOLOGY 8461 Foundation Tier Questions and Mark scheme 2024

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6 items

TheExaminar

GCSE BIOLOGY Higher Tier Paper 2H H Friday 9 June 2024GCSE BIOLOGY Higher Tier Paper 2H H Friday 9 June 2024

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40 pages

Written in 2024/2025

Grade A+

TheExaminar

GCSE BIOLOGY Higher Tier Paper 1HGCSE BIOLOGY Higher Tier Paper 1H

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40 pages

Written in 2024/2025

Grade A+

TheExaminar

GCSE BIOLOGY 8461/1H Paper 1 Higher Tier Mark scheme June 2024 Version: 1.0 FinalGCSE BIOLOGY 8461/1H Paper 1 Higher Tier Mark scheme June 2024 Version: 1.0 Final

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27 pages

Written in 2024/2025

Grade A+

TheExaminar

GCSE BIOLOGY Foundation Tier Paper 1F F Tuesday 16 May 2024GCSE BIOLOGY Foundation Tier Paper 1F F Tuesday 16 May 2024

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40 pages

Written in 2024/2025

Grade A+

TheExaminar

GCSE BIOLOGY 8461/1F Paper 1 Foundation Tier Mark scheme June 2024 Version: 1.0 FinalGCSE BIOLOGY 8461/1F Paper 1 Foundation Tier Mark scheme June 2024 Version: 1.0 Final

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27 pages

Written in 2024/2025

Grade A+

TheExaminar

GCSE BIOLOGY 8461/2F Paper 2 Foundation Tier Mark scheme June 2024 Version: 1.0 FinalGCSE BIOLOGY 8461/2F Paper 2 Foundation Tier Mark scheme June 2024 Version: 1.0 Final

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28 pages

Written in 2024/2025

Grade A+

TheExaminar

What is the human body temperature? - Answer 37 degrees Celsius Give 3 things which impact body temperature - Answer -Exercise -Illness -External temperature Which part of the body controls body temperature? - Answer Thermoregulatory centre in the brain What is the thermoregulatory centre? - Answer The area of brain sensitive to temperature of blood what 2 things happen when body temperature too high - Answer -blood vessels dilate (vasodilation) -sweat producedfrom ...

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4 pages

Written in 2024/2025

Grade A+

TestSolver9

metabolism - Answer sum of all reactions in cell or body Give 6 metabolic reactions - Answer -conversion of glucose to starch, glycogen and cellulose -formation of lipids -forming amino acids which are used to make proteins -respiration -photosynthesis -breakdown of extra proteins in the liver to form urea for excretion what 2 things are needed to make up lipids? - Answer 1 molecule of glycerol 3 molecules of fatty acids what 2 things are needed to make up amino acids? ...

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1 pages

Written in 2024/2025

Grade A+

TestSolver9

Define metabolic rate - Answer The rate at which reactions take place within the body, particularly within cellular respiration What is a balanced diet? - Answer A diet that includes everything needed to keep the body healthy Why do different people need different diets? - Answer People need different amounts of energy because the metabolic rate varies between person to person Which food groups are used by the body to release energy and build cells? - Answer Carbohydrates, f...

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5 pages

Written in 2024/2025

Grade A+

TestSolver9

What is diffusion? - Answer Diffusion is the random net movement of particles from an area of higher concentration to an area of lower concentration. Examples of diffusion: - Answer - Oxygen and carbon dioxide in gas exchange. - Urea from cells into the blood plasma for excretion in the kidney How does concentration gradient affect rate of diffusion? - Answer A large difference in concentration leads to a greater probability of molecular collisions over the region and therefore i...

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2 pages

Written in 2024/2025

Grade A+

TestSolver9

Ecosystem - Answer The interaction of a community of living organisms with the non-living parts of their environment What is a community made up of? - Answer The populations of different species or organisms that are all interdependent in a habitat Habitat - Answer The environment in which an organism lives Population - Answer The total number of organisms of the same species living in the same geographical area Interdependence - Answer The way in which each species wi...

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13 pages

Written in 2024/2025

Grade A+

TestSolver9

What are eukaryotic cells? - Answer Cells that are more complex and have a nucleus (animal and plant cells) What are prokaryotic cells? - Answer Cells that are smaller and simpler, and don't have a nucleus but still have genetic information (bacteria) What are eukaryotes? - Answer Organisms made of eukaryotic cells What is a prokaryote? - Answer A prokaryotic cell (it's a single celled organism) What is cytoplasm? - Answer A liquid gel in which most of the chemic...

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43 pages

Written in 2024/2025

Grade A+

TestSolver9

Magnification equation - Answer Magnification= image size/actual object size Light microscope- how many um in 1 mm - Answer 1000 um light microscope- how many nm in 1 um - Answer 1000 nm Light microscope- why can we see the nucleus and cell wall but not the mitochondria - Answer Too small and not stained light microscope- how can we see smaller parts of cells - Answer An electron microscope has much more resolution and magnification What is osmosis? - Answer The ...

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12 pages

Written in 2024/2025

Grade A+

TestSolver9

How is the real size of a magnified image calculated? - Answer Real size = Image size ÷ Total magnification. What is a eukaryotic cell? - Answer A cell with DNA inside a membrane bound nucleus. Prokaryotic cells do not have a nucleus. Name two differences between a plant cell and a bacterial cell? - Answer Plant cells have a nucleus / plant cells have mitochondria / plant cells have chloroplasts / plant cells have a cellulose cell wall whereas bacteria do not contain any of these...

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3 pages

Written in 2024/2025

Grade A+

TestSolver9

Homeostasis - Answer The regulation of the internal conditions of a cell or organism in response to internal or external changes. E.g. the control of: blood glucose concentration, body temperature, water and ion levels, etc. Negative Feedback - Answer This is a type of control mechanism: 1) a receptor detects a change in a stimulus. 2) the coordination centre compares the stimulus to a set point. 3) an effector then produces a response to correct any difference from the set point. ...

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15 pages

Written in 2024/2025

Grade A+

TestSolver9

Differentiation - Answer Process by which a cell changes to become specialised for its job eukaryotic cells - Answer complex and includes all animal and plant cells prokaryotic cells - Answer Smaller and simple, single-celled organism nucleus - Answer contains genetic material that controls the activties of the cell mitochondria - Answer where the reactions for aerobic respiration takes place cytoplasm - Answer gel-like substance where most of the chemical reacti...

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12 pages

Written in 2024/2025

Grade A+

TestSolver9

Define the term 'evolution' - Answer A change in the inherited characteristics of a population over time through a process of natural selection which may result in the formation of a new species. What does the theory of evolution by natural selection state? - Answer all species of living things have evolved from simple life forms that first developed more than three billion years ago. How can natural selection result in the formation of a new species? - Answer if two populat...

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4 pages

Written in 2024/2025

Grade A+

TestSolver9