Lipases break down lipids fats to glycerol and fatty acids. In the case of heart failure a donor heart, or heart and lungs can be transplanted. Required practical activity 5 was using appropriate apparatus to make and record the measurements needed to determine the densities of regular and irregular solid objects and liquids.
Temperature must be controlled by use of a water bath or electric heater. Be able to evaluate the practical risks and benefits, as well as social and ethical issues, of the use of stem cells in medical research and treatments. With electron microscopes, using a beam of electrons instead of a beam of light, you gain a much higher resolution seeing much smaller objects e.
The right ventricle pumps blood to the lungs where gas exchange takes place. You need to understand the three overall stages of the cell cycle but do not need to know the different phases of the mitosis stage. You should be able to explain how the motion of the molecules in a gas is related to both its temperature and its pressure explain qualitatively the relation between the temperature of a gas and its pressure at constant volume.
A tissue is a group of cells with a similar structure and function. Know that damage to any of these systems can be debilitating if not fatal.
Changes of state are physical changes which differ from chemical changes because the change does not produce a new substance and if the change is Aqa practice science papers gcse the substance recovers its original properties. You should be able to understand the principles of sampling as applied to scientific data in terms of risk factors.
Be able to interpret data about risk factors for specified diseases. Osmosis is the diffusion of water from a dilute solution to a concentrated solution through a partially permeable membrane.
The specific heat capacity of a substance is the amount of energy required to raise the temperature of one kilogram of the substance by one degree Celsius. Cell division by mitosis is important in the growth and development of multicellular organisms.
Platelets are fragments of cells which initiate the clotting process at wound sites. When the molecules collide with the wall of their container they exert a force on the wall.
Be able to calculate and compare surface area to volume ratios. Knowledge and understanding of stem cell techniques are not required. Knowledge of the lungs is restricted to the trachea, bronchi, alveoli and the capillary network surrounding the alveoli.
This reduces the flow of blood through the coronary arteries, resulting in a lack of oxygen for the heart muscle.
Biology Paper 1, Topic 2 "Organisation" Cells are the basic building blocks of all living organisms. You should be able to use a scatter diagram to identify a correlation between two variables in terms of risk factors. Diffusion is the spreading of the particles of any substance in solution, or particles of a gas, resulting in a net movement from an area of higher concentration to an area of lower concentration.
Today radioactive materials are widely used in medicine, industry, agriculture and electrical power generation. Plants require ions for healthy growth. This is called internal energy. A reduced voltage is safer for domestic electricity supplies. You should be able to translate information between graphical and numerical forms; and extract and interpret information from charts, graphs and tables in terms of risk factors.
Changing the temperature of a gas, held at constant volume, changes the pressure exerted by the gas. It is alkaline to neutralise hydrochloric acid from the stomach.
Carcinogens, including ionising radiation, as risk factors in cancer. You should be able to explain how the structure of these vessels relates to their functions. You should be able to link the structure of a root hair cell to its function.
Appreciate that large molecules cannot pass through the membrane. Organs are aggregations of tissues performing specific functions. Different types of disease may interact e. Defects in the immune system mean that an individual is more likely to suffer from infectious diseases.
You should be able to explain and describe how diffusion, osmosis and active transport are used to transport materials in and out of cells and the differences between these three processes. Physics Paper 5, Topic 20 "Particle model of matter" Appreciate that the particle model is widely used to predict the behaviour of solids, liquids and gases and this has many applications in everyday life.
Some glucose is used in respiration. The amount of energy an appliance transfers depends on how long the appliance is switched on for and the power of the appliance.
The particle model can be used to explain the different states of matter differences in density.Jan 02, · Four practice papers with mark schemes for Paper 2 of the AQA GCSE (9–1) specification (first teaching Septemberexaminations from ). Carefully tailored to mimic both the format and style of the AQA examination, the papers provide students with the essential exam practice they need.
Between them, the papers cover every specification point Every. CGP New Grade GCSE Combined Science AQA Practice Papers: Foundation Pack 2 CGP New Grade GCSE Science: Essential Maths Skills - Study & Practice Letts AQA GCSE Combined Science Higher Complete Revision & Practice.
Science GCSE Qualifications from AQA Over teachers have helped create our new qualifications through surveys, focus groups, papers, and resource development.
GCSE Science: Delivering and assessing the mathematical requirements. Tuesday 12 March London. Science; GCSE; Combined Science: Trilogy; Assessment resources; Hide. Assessment resources. June papers and mark schemes. Insight report: results at a glance June ( MB) Specimen papers and mark schemes Foundation.
AQA is not responsible for the content of external sites. New Grade GCSE Combined Science AQA Practice Papers: Higher Pack 1 & 2 Bundle (SAHBP41). New for Grade GCSE Science We have all the practice students will need for the tough Grade GCSE AQA Trilogy Combined Science.
Science GCSE Qualifications from AQA papers, and resource development. More about our KS4 suite of specifications, including our Entry Level Certificate and STEM Technical Award Level 1 and 2. Upcoming events.
More meeting dates. Professional development. GCSE Science: Getting started. Wednesday 26 September London. GCSE Physics.Download