Key words for gcse science

Science words

Artery A blood vessel which transports oxygenated blood around the body. Asexual Reproduction Reproduction without producing gametes. A theory is a scientific idea which is supported by the results of scientific investigations. Biodegradable A substance that will be broken by natural processes Bladder A muscular sac that contains and ejects urine Brain The organ that coordinates the actions and responses of the body. For this reason, a fair test can also be called a controlled scientific investigation. The dependent variable is the one which changes because we change the independent variable. A hypothesis is a statement which can be tested scientifically, for example: the amount of carbon dioxide absorbed by a plant is proportional to the light intensity. Aerobic Respiration The process of respiration using the oxygen from the atmosphere Alveoli Tiny air sacs, present in the lungs, where gas exchange takes place Anaerobic Respiration The process of respiration without using oxygen from the air Antagonistic Muscles Pairs of muscles that work together to cause movement of joints Anther Part of the flower where pollen is produced Antibiotic A drug that will stop or kill certain bacteria. A control variable is a variable which is deliberately kept the same. Antibody A protein molecule that helps protect the body from invading cells. A prediction is a statement of what we expect to happen when a hypothesis is tested, for example: if the light intensity is doubled, the amount of carbon dioxide absorbed by the plant will double. An investigation is said to be repeatable if similar results are obtained when it is repeated under the same conditions by the same person or by the same group scientists. Science develops due to a process called peer review. The independent variable is the one which we the experimenters change.

Active Transport The movement of molecules in and out of partially permeable cell membranes using the energy produced by respiration. An example of this is cloning. Cancer A disease causing the rapid and fatal overproduction of cells in a part of the body.

Key words for gcse science

Cell Membrane One of the outer layers of a cell which dictates which substances go in and out of the cell Cell Wall The boundary layer of the cell which provides the cell with shape and structure. Aerobic Respiration The process of respiration using the oxygen from the atmosphere Alveoli Tiny air sacs, present in the lungs, where gas exchange takes place Anaerobic Respiration The process of respiration without using oxygen from the air Antagonistic Muscles Pairs of muscles that work together to cause movement of joints Anther Part of the flower where pollen is produced Antibiotic A drug that will stop or kill certain bacteria. An example of this is cloning. Every other variable would have to be controlled for the results of this practical investigation to be valid. Asexual Reproduction Reproduction without producing gametes. Bacteria A type of single-celled organism without a nucleus Bile An alkaline fluid produced in the liver to aid digestion and the breaking down of food molecules Biomass The mass of living organisms in a certain area. The dependent variable is the one which changes because we change the independent variable. Variables A variable is something that can change in a practical investigation. If the results of a given investigation are reproduced by enough scientists, the hypothesis on which the investigation will be built into scientific theory. Without controlling the other variables, an investigation would not be a fair test and so would not produce valid results. The process of moving digested food into the blood.

These control variables could include: the mass of food they had eaten the surface area of the food they had eaten what the person had eaten earlier that day their initial blood sugar level whether or not they had done exercise If the person had eaten one type of food while running a marathon one day, and another while watching TV the following day, we would have no idea whether a change in their blood sugar level was due to the type of food they had eaten or due to the different levels of physical activity on both days.

Carbohydrates A groups of foods which provide energy Carnivore An animal that eats another animal Catalyst A substance that speeds up a chemical reaction Cell A structural and functional unit of a cell.

Aerobic Respiration The process of respiration using the oxygen from the atmosphere Alveoli Tiny air sacs, present in the lungs, where gas exchange takes place Anaerobic Respiration The process of respiration without using oxygen from the air Antagonistic Muscles Pairs of muscles that work together to cause movement of joints Anther Part of the flower where pollen is produced Antibiotic A drug that will stop or kill certain bacteria.

science keywords display

Read that sentence again. Cell Membrane One of the outer layers of a cell which dictates which substances go in and out of the cell Cell Wall The boundary layer of the cell which provides the cell with shape and structure.

Science key points

Cell Membrane One of the outer layers of a cell which dictates which substances go in and out of the cell Cell Wall The boundary layer of the cell which provides the cell with shape and structure. Science develops due to a process called peer review. Asexual Reproduction Reproduction without producing gametes. These control variables could include: the mass of food they had eaten the surface area of the food they had eaten what the person had eaten earlier that day their initial blood sugar level whether or not they had done exercise If the person had eaten one type of food while running a marathon one day, and another while watching TV the following day, we would have no idea whether a change in their blood sugar level was due to the type of food they had eaten or due to the different levels of physical activity on both days. Cancer A disease causing the rapid and fatal overproduction of cells in a part of the body. Antibody A protein molecule that helps protect the body from invading cells. For a practical investigation to be a fair test which produces valid results, just two variables should change — the independent variable the one which we change and the dependent variable the one which changes because we change the independent variable. A theory is a scientific idea which is supported by the results of scientific investigations. Read that sentence again. In other words, every other variable should be controlled. The dependent variable is the one which changes because we change the independent variable. For this reason, a fair test can also be called a controlled scientific investigation. A prediction is a statement of what we expect to happen when a hypothesis is tested, for example: if the light intensity is doubled, the amount of carbon dioxide absorbed by the plant will double. Everything else should remain the same. Every other variable would have to be controlled for the results of this practical investigation to be valid.
Rated 8/10 based on 53 review
Download
GCSE Science: AQA's How Science Works Glossary