| A | B |
| make an effort | try hard to do something |
| error | mistake |
| pay attention | concentrate on |
| anxious | worried |
| accident | a bad thing which can happen if you are not careful |
| cell | smallest part of a living thing |
| chemical | Maybe something used in a science lab |
| connection | linking |
| electrical | using electricity |
| encode | store information |
| graduate | finish university |
| long-term | long time |
| memory | information we store in our brain |
| motivate | make someone want to do something |
| muscle | something which makes the body strong |
| plastic | able to change shape |
| plasticity | ability to change shape |
| repair | mend |
| researcher | someone who tries to find new information |
| sense | hearing is one |
| sensory | the skin is a _________ organ |
| short-term | short time |
| store | keep |
| transfer | move from one place to another |