BIOLOGY SB1 EDEXCEL GCSE Exam with Guaranteed Accurate Answers

How do you work out magnification? - correct answer multiply the magnifications of both the lenses together What does resolution mean? - correct answer the smallest distance between 2 points that still can be seen as 2 points Light microscopes use... - correct answer light and glass lenses to magnify an image electron microscopes use... - correct answer beams of electrons passing through a specimen to build up an image SI units in order from smallest to largest - correct answer picometres, nanometres, micrometres, millimetres Eukaryotic cells - correct answer cells with a nucleus cell membrane - correct answer a thin, bag like structure that controls what enters and leaves the cell and separates one cell from another Cytoplasm - correct answer a jelly-like substance where most of the cells chemical reactions occur Mitochondria - correct answer a jelly bean like structure where aerobic respiration occurs Nucleus - correct answer controls the cells activities and contains chromosomes field of view - correct answer the circular area you see in a light microscope Cell Wall - correct answer made of cellulose, and supports and protects the cell