40475942
Description
Flashcards by Sophie Scott, updated 4 months ago
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Created by Sophie Scott
4 months ago
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| Question | Answer |
| Parts and categories of the nervous system | central, peripheral. brain, spinal cord, nerves. |
| What does the endocrine system use? | hormones |
| where do the hormones come from in the endocrine system? | thyroid gland (throat area), pituitary, hypothalamus, pineal glands (brain), adrenal gland (above kidneys. |
| first line of defence barriers? | hair, mucus, respiratory system, skin, stomach acids, tears, lysosomes. |
| second line of defence barriers? | non specific white blood cells (phagocytes), fever |
| third line of defence barriers? | specific white blood cells |
| how does the immune system know when the body is infected? | When the white blood cells identify an unfamiliar marker on a cell. |
| what do b cells do? | they make copies of antibodies to defeat antigens and release them into the bloodstream. they also create b memory cells which stay until the body encounters the same antigen again and they have the antibody ready to go. |
| What to never do when drawing a line of best fit? | connect the dots. |
| What acronym do you use when creating a line graph? | SPLAT |
| What does splat stand for? | Scale, Plot, Label & LOBF, Axis, Title |
| What is the independent variable? | The variable you change to see what happens. |
| What is the dependent variable? | The result you measure. |
| What is the controlled variable? | The variables you keep the same. |
| what is reliablility when reviewing an investigation? | consistency of results when repeated. |
| What is validity when reviewing an investigation? | Are there controlled variables included? Have all controlled variables been considered? |
| What is accuracy when reviewing an investigation? | How close the measurements are to the true value. The amount of error and mistakes made. |
| Law of conservation of energy | The idea that energy cannot be created or destroyed, only transformed. |
| Forms of energy | Chemical potential energy, gravitational potential energy (GPE), nuclear potential energy, elastic potential energy (EPE), kinetic, thermal, light, mechanical, sound. |
| Conduction | Transfer through direct contact. |
| Convection | Transfer by movement of fluids or gas. |
| Radiation | Transfer by electromagnetic waves. |
| Energy Efficiency Formula | useful output --------------------------- X 100% total energy input |
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