yTeach.co.uk - Teaching resources and tools

yTeach on Facebook Login | Sign Up

My yTeach
Start & Search

Buy resources
Buy Credits
Buy Packs

yTeach help
Help
Contact Us
About Us

Shopping Cart

Homepage » Search results

Search by Keyword

Resources Structure

Key Stage 3

Mathematics

(3131)

Science

(1890)

Key Stage 4

Biology (3261)	Chemistry (2845)
Mathematics (3791)	Physics (2806)

A level

Biology (3393)	Chemistry (3292)
Mathematics (3049)	Physics (3275)

Exam Specifications

Key Stage 4

AQA GCSE Science A (4461) Biology (3285)
AQA GCSE Additional Science (4463) Biology (3276)
AQA GCSE Biology (4411) (3305)
AQA GCSE Science A (4461) Chemistry (2845)
AQA GCSE Additional Science (4463) Chemistry (2845)
AQA GCSE Chemistry (4421) (2845)
AQA GCSE Science A (4461) Physics (2806)
AQA GCSE Physics (4451) (2806)
AQA GCSE Physics (4451) (2806)
AQA GCSE Mathematics A (4301) (3817)

A Level

AQA GCE AS/A Biology A (5411/6411 / 5413/6413) (3444)
AQA GCE AS/A Chemistry (5421/6421) (3296)
AQA GCE AS/A Physics A (5451/6451) (3275)
AQA GCE AS/A Physics B (5456/6456) (3275)
AQA GCE AS/A Mathematics (6360) (3052)

Programmes of Study

Key Stage 3

Programme of Study for Key Stage 3 Mathematics (3183)
Programme of Study for Key Stage 3 Science (1938)

Categories

Subject

Level

Resource type

Teaching type

Browse document tree

I. Biology 1a – Human Biology (714)

1. How do human bodies respond to changes inside them and to their environment? (409)

to evaluate the benefits of, and the problems that may arise from, the use of hormones to control fertility, including IVF (24)

to evaluate the claims of manufacturers about sports drinks. (67)

The nervous system enables humans to react to their surroundings and coordinate their behaviour. (50)

Receptors detect stimuli which include light, sound, changes in position, chemicals, touch, pressure, pain and temperature. (The structure and functions of sense organs such as the eye and the ear are not required.) (29)

Information from receptors passes along cells (neurones) in nerves to the brain. The brain coordinates the response. (27)

Reflex actions are automatic and rapid. They often involve sensory, relay and motor neurones. (51)

The role of receptors, sensory neurones, motor neurones, relay neurones, synapses and effectors in simple reflex actions. (50)

Internal conditions which are controlled include: - the water content of the body - the ion content of the body - temperature - blood sugar levels (160)

Many processes within the body are coordinated by chemical substances called hormones. Hormones are secreted by glands and are transported to their target organs by the bloodstream. (28)

Hormones regulate the functions of many organs and cells. (52)

Several hormones are involved in the menstrual cycle of a woman. Those hormones involved in promoting the release of an egg include: FSH and Oestrogen. (92)

The uses of hormones in controlling fertility include: - giving oral contraceptives which contain hormones to inhibit FSH production, - giving FSH as a ‘fertility drug’ to a woman whose own level of FSH is too low to stimulate eggs to mature. (52)

2. What can we do to keep our bodies healthy? (128)

to evaluate information about the effect of food on health (58)

to evaluate claims made by slimming programmes. (31)

A healthy diet contains the right balance of the different foods you need and the right amount of energy. A person is malnourished if their diet is not balanced. This may lead to a person being too fat or too thin an may also lead to deficiency diseases. (31)

The rate at which all the chemical reactions in the cells of the body are carried out (the metabolic rate) varies with the amount of activity you do and the proportion of muscle to fat in your body. It may be affected by inherited factors. (28)

The less exercise you take and the warmer it is, the less food you need. People who exercise regularly are usually fitter than people who take little exercise. If you exercise your metabolic rate stays high for some time after you have finished. (36)

In the developed world too much food and too little exercise are leading to high levels of obesity and the diseases linked to excess weight: - arthritis (worn joints) - diabetes (high blood sugar) - high blood pressure - heart disease. (63)

Some people in the developing world suffer from health problems linked to lack of food. These include: - reduced resistance to infection - irregular periods in women. (31)

Cholesterol is a substance made by the liver and found in the blood. The amount of cholesterol depends on a combination of diet and inherited factors. High levels of cholesterol in the blood increase the risk of disease of the heart and blood vessels.

Cholesterol is carried around the body by two types of lipoproteins. LDLs are ‘bad’ cholesterol and can cause heart disease. HDLs are ‘good’ cholesterol. The balance of these is very important to good heart health.

Saturated fats increase blood cholesterol levels. Mono-unsaturated and polyunsaturated fats may help both to reduce blood cholesterol levels and to improve the balance between LDLs and DLs.

Too much salt in the diet can lead to increased blood pressure for about 30% of the population. (27)

Processed food often contains a high proportion of fat and/or salt.

3. How do we use/abuse medical and recreational drugs? (42)

to evaluate the effect of statins on cardio-vascular disease

to evaluate the different types of drugs and why some people use illegal drugs for recreation (36)

to evaluate claims made about the effect of cannabis on health and the link between cannabis and addiction to hard drugs (36)

to explain how the link between smoking tobacco and lung cancer gradually became accepted (36)

to evaluate the different ways of trying to stop smoking.

Drugs can be beneficial but may harm the body.

Many drugs derived from natural substances have been known to indigenous peoples for many years.

Scientists are developing new drugs. These need to be thoroughly tested.

When new medical drugs are devised, they have to be extensively tested and trialled before being used. Drugs are tested in the laboratory to find if they are toxic. They are then trialled on human volunteers to discover any side effects.

Thalidomide is a drug that was developed as a sleeping pill. It was also found to be effective in relieving morning sickness in pregnant women (unfortunately many babies were born with severe limb abnormalities). Recently is being used to treat leprosy.

Some people use drugs recreationally. Some of these recreational drugs are more harmful than others. Some of these drugs are legal, some illegal. (36)

The overall impact of legal drugs on health is much greater than the impact of illegal drugs, because far more people use them. (36)

Drugs change the chemical processes in people’s bodies so that they may become dependent or addicted to them and suffer withdrawal symptoms without them. Heroin and cocaine are very addictive. (36)

Nicotine is the addictive substance in tobacco smoke.Tobacco smoke contains carcinogens. (36)

Tobacco smoke also contains carbon monoxide which reduces the oxygen-carrying capacity of the blood. In pregnant women this can deprive a fetus of oxygen and lead to a low birth mass. (36)

Alcohol affects the nervous system by slowing down reactions and helps people relax, but too much may lead to lack of self-control, unconsciousness or even coma, eventually damaging the liver and brain. (36)

4. What causes infectious diseases and how can our bodies defend themselves against them? (202)

to relate the contribution of Semmelweiss in controlling infection to solving modern problems with the spread of infection in hospitals

to evaluate the advantages and disadvantages of being vaccinated against a particular disease (25)

to explain how the treatment of disease has changed as a result of increased understanding of the action of antibiotics and immunity

to evaluate the consequences of mutations of bacteria and viruses in relation to epidemics and pandemics eg bird influenza. (50)

Microorganisms that cause infectious disease are called pathogens. (57)

Bacteria and viruses may reproduce rapidly inside the body and may produce poisons (toxins) which make us feel ill. Viruses damage cells in which they reproduce. (81)

The body has different ways of protecting itself against pathogens. White blood cells help to defend against pathogens. (33)

Some medicines, including painkillers, help to relieve the symptoms of infectious disease, but do not kill the pathogens.

Antibiotics, including penicillin, are medicines that help to cure bacterial disease by killing infective bacteria inside the body. Antibiotics cannot be used to kill viral pathogens, which live and reproduce inside cells. (31)

Many strains of bacteria, including MRSA, have developed resistance to antibiotics as a result of natural selection. To prevent further resistance arising it is important to avoid over-use of antibiotics. (31)

People can be immunised against a disease by introducing small quantities of dead or inactive forms of the pathogen into the body (vaccination). Vaccines stimulate the white blood cells to produce antibodies that destroy the pathogens. (25)

II. Unit Biology 1b – Evolution and Environment (805)

5. What determines where particular species live and how many of them there are? (389)

to suggest how organisms are adapted to the conditions in which they live (96)

to suggest the factors for which organisms are competing in a given habitat (154)

to suggest reasons for the distribution of animals or plants in a particular habitat. (125)

To survive, organisms require a supply of materials from their surroundings and from the other living organisms there. (173)

Plants often compete with each other for light and for water and nutrients from the soil. (32)

Animals often compete with each other for food, mates and territory. (120)

Organisms have features (adaptations) which enable them to survive in the conditions in which they normally live. (91)

Animals and plants may be adapted for survival in the conditions where they normally live eg deserts, the Arctic. (134)

Animals and plants may be adapted to cope with specific features of their environment eg thorns, poisons and warning colours to deter predators. (61)

6. Why are individuals of the same species different from each other? What new methods do we have for producing plants and animals with the characteristics we prefer? (193)

to interpret information about cloning techniques and genetic engineering techniques (63)

to make informed judgements about the economic, social and ethical issues concerning cloning and genetic engineering, including GM crops. (35)

The information that results in plants and animals having similar characteristics to their parents is carried by genes which are passed on in the sex cells (gametes) from which the offspring develop. (60)

Different genes control the development of different characteristics. (32)

The nucleus of a cell contains chromosomes. Chromosomes carry genes that control the characteristics of the body. (35)

There are two forms of reproduction: sexual reproduction (the joining (fusion) of male and females gametes) and asexual reproduction (no fusion of gametes and only one individual is needed as the parent) (28)

New plants can be produced quickly and cheaply by taking cuttings from older plants. These new plants are genetically identical to the parent plant. (28)

Modern cloning techniques include: - tissue culture - embryo transplants - fusion cell and adult cell cloning. (35)

In genetic engineering, genes from the chromosomes of humans and other organisms can be ‘cut out’ using enzymes and transferred to cells of other organisms. (30)

Genes can also be transferred to the cells of animals or plants at an early stage in their development so that they develop with desired characteristics. (35)

7. Why have some species of plants and animals died out? How do new species of plants and animals develop? (143)

to suggest reasons why scientists cannot be certain about how life began on Earth (28)

to interpret evidence relating to evolutionary theory (25)

to suggest reasons why Darwin’s theory of natural selection was only gradually accepted (25)

to identify the differences between Darwin’s theory of evolution and conflicting theories (44)

to suggest reasons for the different theories. (5)

Fossils provide evidence of how much (or how little) different organisms have changed since life developed on Earth. (64)

The theory of evolution states that all species of living things have evolved from simple life-forms which first developed more than three billion years ago. (36)

Studying the similarities and differences between species helps us to understand evolutionary and ecological relationships. (28)

Extinction may be caused by: - changes to the environment - new predators - new diseases - new competitors. (36)

Evolution occurs via natural selection. (25)

Where new forms of a gene result from mutation there may be more rapid change in a species. (54)

8. How do humans affect the environment? (189)

to analyse and interpret scientific data concerning environmental issues (101)

to weigh evidence and form balanced judgements about some of the major environmental issues facing society, including the importance of sustainable development (53)

to evaluate methods used to collect environmental data and consider their validity and reliability as evidence for environmental change. (58)

Rapid growth in the human population and an increase in the standard of living means that: - raw materials are rapidly being used up - more waste is produced - more pollution will be caused. (125)

Humans reduce the amount of land available for other animals and plants by building, quarrying, farming and dumping waste. (29)

More waste is being produced which, unless properly handled, may pollute water, air and land. (64)

Living organisms can be used as indicators of pollution: - lichens can be used as air pollution indicators - invertebrate animals can be used as water pollution indicators. (64)

Large scale deforestation in tropical areas, for timber and to provide land for agriculture, has: - increased the release of carbon dioxide into the atmosphere - reduced the rate at which carbon dioxide is removed from the atmosphere.

Loss of forest leads to reduction in biodiversity. Some of the organisms that are lost may have been of future use. (29)

Increases in the numbers of cattle and rice fields have increased the amount of methane released into the atmosphere. (34)

Carbon dioxide and methane in the atmosphere absorb most of the energy radiated by the Earth. Some of this energy is re-radiated back to the Earth and so keeps the Earth warmer. Increasing levels of these gases may be causing global warming. (34)

Improving the quality of life without compromising future generations is known as sustainable development. Planning is needed at local, regional and global levels to manage sustainability. (29)

III. Additional materials (1766)

1. Additional materials (1766)

Additional materials (1766)

Search by Category

Resource type

Display: 30 | 60 | 90

Sort by: Title | Resource Type

There are no resources matching the search criteria below.

Key Stage 4 -
remove this restriction
AQA GCSE Science A (4461) Biology -
remove this restriction
Cholesterol is carried around the body by two types of lipoproteins. LDLs are ‘bad’ cholesterol and can cause heart disease. HDLs are ‘good’ cholesterol. The balance of these is very important to good heart health. -
remove this restriction

Please try altering your search criteria to find the required resources.

Reminder notice for Free Content Creator access point

Notice

Before posting any material, please insure that you have thoroughly reviewed the Terms of Use, Privacy Policy and Children’s Information Privacy Policy and are completely familiar with the rules and obligations for submissions to yTeach Services. For ease of reference, links to each of these documents is provided below.

Continue