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Combined Science

GCSE Combined Science covers content from all three science subjects - Biology, Chemistry, and Physics - and earns you two GCSE qualifications. Unlike single science courses, Combined Science evaluates your performance across all three subjects. So if you’re looking for an all-rounder science qualification, Combined Science is the one for you.

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Combined Science

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GCSE Combined Science covers content from all three science subjects - Biology, Chemistry, and Physics - and earns you two GCSE qualifications. Unlike single science courses, Combined Science evaluates your performance across all three subjects. So if you’re looking for an all-rounder science qualification, Combined Science is the one for you.

Combined Science Revision with StudySmarter

Your Combined Science revision time can be easy and free! Your answer is StudySmarter, an award-winning study app offering an extensive collection of summaries, flashcards, notes, quizzes, and more, covering all Combined Science topics.

The StudySmarter app can be used online and offline at no cost to you. That’s correct; StudySmarter is a free study app.

Why choose StudySmarter?

Here’s why you should start your comprehensive Combined Science exam prep with StudySmarter:

Easy access to thousands of flashcards in Combined Science topics - or you create your own directly from your study material!

Free expert-verified summaries for your GCSE prep, such as Cell Organelles and Human Impact on Climate Change.

An intelligent study plan, complete with analytics and a study timer, to motivate you to pass your Combined Science and all other exams.

Create study groups to share documents, notes, and flashcards. Perfect for a team project or a group study session!

And so much more! With StudySmarter, learning is accessible and fun!

Combined Science flashcards in the StudySmarter app, flashcards on measuring pH of a solutionEasy access to thousands of flashcards in Combined Science topics.

GCSE Combined Science - Synergy and Trilogy

Combined Science Synergy and Trilogy are two different approaches to teaching science at the GCSE level. Synergy is a more general approach that covers the basics of biology, chemistry, and physics. Trilogy is a more in-depth approach covering more topics in the three sciences.

Synergy

In Synergy, the content of biology, chemistry, and physics is combined into one course. This means that students learn about all three sciences together and see how the different subjects are related. Synergy is a good option for students who want to get a broad overview of science.

Trilogy

In Trilogy, the course is split into three sections. Each one tackles the three different sciences: biology, chemistry, and physics. The majority of the content and key practicals overlap with the individual science GCSEs. Trilogy is a good option for students who want to specialize in a particular science.

Did you know that science experts at StudySmarter meticulously crafted Combined Science explanations covering all relevant topics, available free of charge?

Develop scientific knowledge and understanding across biology, chemistry, and physics with explanations and flashcards on topics such as Building Blocks of Science, the Evolution of the Atmosphere, and the Conservation of Mass.

Difference between Combined Science and Triple Science

Combined Science and Triple Award Science are both GCSE courses that cover biology, chemistry, and physics. However, the main difference is that Combined Science is worth two GCSE qualifications, while Triple Award Science offers students the opportunity to gain three separate GCSEs in each subject.

Triple Science covers more in-depth material and is ideal for students interested in pursuing science-based careers or further studies in these subjects. On the other hand, Combined Science is a good option for students who want to gain a broad understanding of science but may not want to specialize in a specific area.

Combined Science

Triple Science

Biology: Cells, tissues, organs, and systems; reproduction; inheritance; evolution; ecology

Biology: Cells, tissues, organs, and systems; reproduction; inheritance; evolution; ecology; genetics; microbiology

Chemistry: Atoms, molecules, and bonding; structure and properties of matter; chemical reactions; energy changes

Chemistry: Atoms, molecules, and bonding; structure and properties of matter; chemical reactions; energy changes; organic chemistry; inorganic chemistry; physical chemistry

Physics: Forces and motion; electricity and magnetism; waves and sound; light and heat

Physics: Forces and motion; electricity and magnetism; waves and sound; light and heat; mechanics; thermodynamics; electromagnetism; nuclear physics

Things to consider when choosing between Combined and Triple Science

When choosing between Combined and Triple Science, you should consider the following factors:

  • Your interests and future plans. If you are interested in pursuing a career in science, Triple Science may be a better option as it will give you a more in-depth understanding of the subject. However, if you are not sure what you want to do after GCSEs, Combined Science may be a better choice as it is less demanding and allows you to explore other subjects.

  • Your ability in science. If you are good at science, Triple Science may be a good challenge for you. However, if you find science difficult, Combined Science may be a better option.

  • Your workload. Triple Science is a more demanding course than Combined Science. If you are already struggling with your workload, Combined Science may be a better choice.

  • Your school’s offer. Not all schools offer Triple Science. If you want to take Triple Science, you will need to check if your school offers it.

It is important to choose the right course for you. If you are not sure which course to choose, talk to your teacher or a career advisor. They can help you make the best decision for your future.

Frequently Asked Questions about Combined Science

Combined Science, also known as Double Science, is a GCSE qualification that involves the study of all three major science subjects, including Biology, Chemistry, and Physics.

Combined Science, also known as Double Science GCSE, covers all three science subjects including Biology, Chemistry, and Physics. However, it is a combined course that results in students receiving two GCSE qualifications, which is where the name "Double Science" comes from.

The percentage of students who take triple science varies among schools. In 9% of schools, all students take three sciences; in 4% of schools, most classes take three sciences, and in 21% of schools, a minority of classes take three sciences, such as only the top set. Usually, students are given a choice of whether to study three sciences, although this option may not be available to all students.

Combined Science grades are calculated by adding together all marks from the science exams and setting seventeen grade boundaries. This results in two grades that may not be at the same level but could be adjacent. For example, a student may receive a 6-5 or a 5-4 for their combined science grades.

Final Combined Science Quiz

Combined Science Quiz - Teste dein Wissen

Question

Define osmosis in terms of water potential.

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Answer

Osmosis is the movement of water molecules down a water potential gradient, through a semipermeable membrane.

Show question

Question

What is the water potential of pure water?


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Answer

0kPa.

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Question

What are the three types of tonicity?


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Answer

Hypotonic, isotonic and hypertonic.

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Question

Compare plant cells placed in a hypertonic solution to plant cells placed in a hypotonic solution.


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Answer

In a hypertonic solution, plant cells will undergo plasmolysis and will become flaccid. 


But in a hypotonic solution, planning cells will become turgid and firm.

Show question

Question

Compare animal cells placed in a hypertonic solution to animal cells placed in a hypotonic solution. 


Show answer

Answer

In a hypertonic solution, animal cells will become crenated and shrink. 


But in a hypotonic solution, animal cells will undergo cytolysis (cell bursting).

Show question

Question

Under what tonicity do plant cells and animal cells perform best?


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Answer

Plant cells perform best in hypotonic solutions. 


Animal cells perform best in isotonic solutions.

Show question

Question

What is turgor pressure (hydrostatic pressure)?

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Answer

Turgor pressure is the pressure exerted by water molecules as they press against the cell wall.

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Question

What structure in plant cells helps withstand an increase in turgor pressure?


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Answer

Cell wall made of cellulose.

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Question

 Why do animal cells undergo cell bursting much more easily than plant cells?


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Answer

Unlike plant cells, animal cells do not contain cell walls to help them withstand an increase in turgor pressure.

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Question

Describe a plant cell that is turgid.


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Answer

A turgid plant cell is swollen, firm and upright with water.

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Question

What kind of membrane protein are aquaporins?


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Answer

Aquaporins are channel proteins.

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Question

Animal blood is an ____ solution. 


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Answer

Isotonic.

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Question

What are the main structures in the nephron that are involved in water reabsorption via osmosis?


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Answer

The proximal convoluted tubule and the descending limb.

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Question

What are the main factors that affect the rate of osmosis?


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Answer

Water potential gradient, surface area, temperature, and the presence of aquaporins.

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Question

What kind of membrane proteins are aquaporins?


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Answer

Aquaporins are channel proteins that span the length of the cell membrane.

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Question

Describe the function of aquaporins.


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Answer

Aquaporins speed up the rate of osmosis as the rate of diffusion is not sufficient to maintain metabolic processes. Aquaporins are selective for water molecules and only allow their passage through the cell membrane.

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Question

What are calibration curves used for?


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Answer

Calibration curves are used to determine an unknown concentration by comparing the unknown sample with known standard concentrations.

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Question

Define active transport.

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Answer

Active transport is the movement of molecules against their concentration gradient, using carrier proteins and energy in the form of ATP.

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Question

Carrier proteins are _______ proteins, as they span the length of the cell membrane. 


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Answer

Transmembrane.

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Question

Where does ATP hydrolysis take place in active transport, and what is the importance of this?


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Answer

ATP hydrolysis takes place in the carrier protein. This is important as the Pi resulting from ATP hydrolysis attaches to the carrier protein, allowing the carrier protein to change its conformational shape. This enables the molecule to be pumped to the other side of the cell membrane.

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Question

What other process, other than active transport, involves carrier proteins?


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Answer

Facilitated diffusion.

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Question

What are the three types of active transport?


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Answer

Uniport, symport and antiport.

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Question

What is uniport?


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Answer

Uniport is the movement of one type of molecule in one direction.

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Question

What is symport?


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Answer

Symport is the movement of two types of molecules in the same direction. The movement of one molecule down its concentration gradient is coupled to the movement of the other molecule against its concentration gradient.

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Question

What is antiport?


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Answer

Antiport is the movement of two types of molecules in opposite directions.

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Question

Why does mineral uptake in plants rely on active transport?


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Answer

The concentration of mineral ions in the soil is less than the concentration of mineral ions in the plant root hair cell. This concentration means that the mineral ions need to be pumped against their concentration gradient into the plant root hair cell.

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Question

In terms of active transport, what is the problem with waterlogged plants?

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Answer

Waterlogged plants cannot obtain sufficient oxygen for cellular respiration. This means less ATP is produced, and thus less ATP is available for active transport in mineral uptake.

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Question

What kind of carrier protein is the Na + / K + ATPase pump? Describe what the Na + / K + ATPase pump transports. 


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Answer

To antiporter. 


The Na + / K + ATPase pump transports 3 Na + out of the cell and two K + into the cell.

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Question

What is cotransport?

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Answer

Cotransport (also called secondary active transport) occurs when the movement of one molecule down its concentration gradient is coupled to the movement of another molecule against its concentration gradient.

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Question

What are the three kinds of transport that occur in glucose absorption in the ileum? Identify the membrane protein responsible for each type. 


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Answer

Active transport by the Na + / K + ATPase pump. 


Co-transport (symport) by the Na + / glucose cotransporter pump. 


Facilitated diffusion by glucose transporters.

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Question

Define bulk transport and the two types of bulk transport.

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Answer

Bulk transport is the movement of large macromolecules into or out of cells. The two types of bulk transport include endocytosis and exocytosis.

Show question

Question

What is endocytosis? Describe the steps involved. 


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Answer

Endocytosis is the bulk transport of molecules into cells. 


The cell membrane will invaginate around the molecules and enclose them into a vesicle. 


The vesicle will move into the cell.

Show question

Question

What are the three types of endocytosis?


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Answer

Phagocytosis, pinocytosis and receptor-mediated endocytosis.

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Question

What is exocytosis? Describe the steps involved.


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Answer

Exocytosis is the bulk transport of molecules out of cells. 


Vesicles containing molecules fuse with the cell membrane. 


This will empty the contents of the vesicles out into the extracellular environment.

Show question

Question

What is radiation?

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Answer

The emission of energy in the form of electromagnetic waves or particles.

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Question

Is sunlight a form of radiation?

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Answer

Yes, it is.

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Question

Is radiation useful in medicine?

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Answer

Yes, it is.

Show question

Question

Can wave radiation be distinguished by wavelength?

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Answer

Yes, it can.

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Question

Which of these are natural sources of radiation?

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Answer

Sunlight, cosmic rays, lighting, and heavy element disintegration.

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Question

What is ionising radiation?

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Answer

High energy radiation that can modify the structure of matter.

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Question

Is radar technology based on radiation?

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Answer

Yes, it is.

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Question

What is non-ionising radiation?

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Answer

Low energy radiation that cannot modify the structure of matter.

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Question

Which of the following is a type of non-ionising radiation with a large wavelength?

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Answer

Radio waves.

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Question

Which of the following is a type of ionising radiation with a short wavelength?

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Answer

Gamma rays.

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Question

Are x-rays a form of radiation?

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Answer

Yes, they are a form of radiation produced by electromagnetic waves.

Show question

Question

Where are x-Rays used?

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Answer

In medicine.

Show question

Question

Do microwaves use radiation?

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Answer

Yes, they do.

Show question

Question

What is an unstable nucleus?

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Answer

An atom that has more neutrons than protons.

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Question

What happens when an atom has an unstable nucleus?

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Answer

The atom can break up and decay.

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Question

How long can an unstable nucleus last?

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Answer

Some can last millions of years, while others last only a few seconds.

Show question

Flashcards in Combined Science1871

Start learning

Define osmosis in terms of water potential.

Osmosis is the movement of water molecules down a water potential gradient, through a semipermeable membrane.

What is the water potential of pure water?


0kPa.

What are the three types of tonicity?


Hypotonic, isotonic and hypertonic.

Compare plant cells placed in a hypertonic solution to plant cells placed in a hypotonic solution.


In a hypertonic solution, plant cells will undergo plasmolysis and will become flaccid. 


But in a hypotonic solution, planning cells will become turgid and firm.

Compare animal cells placed in a hypertonic solution to animal cells placed in a hypotonic solution. 


In a hypertonic solution, animal cells will become crenated and shrink. 


But in a hypotonic solution, animal cells will undergo cytolysis (cell bursting).

Under what tonicity do plant cells and animal cells perform best?


Plant cells perform best in hypotonic solutions. 


Animal cells perform best in isotonic solutions.

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