BIOLOGY SB1 EDEXCEL GCSE (9-1)
Questions and Answers.
How do you work out magnification? - Answer multiply the magnifications of both the lenses
together
What does resolution mean? - Answer the smallest distance between 2 points that still can
be seen as 2 points
Light microscopes use... - Answer light and glass lenses to magnify an image
electron microscopes use... - Answer beams of electrons passing through a specimen to
build up an image
SI units in order from smallest to largest - Answer picometres, nanometers, micrometers,
millimeters
Eukaryotic cells - Answer cells with a nucleus
cell membrane - Answer a thin, bag like structure that controls what enters and leaves the
cell and separates one cell from another
Cytoplasm - Answer a jelly-like substance where most of the cells chemical reactions occur
Mitochondria - Answer a jelly bean like structure where aerobic respiration occurs
Nucleus - Answer controls the cells activities and contains chromosomes
field of view - Answer the circular area you see in a light microscope
Cell Wall - Answer made of cellulose, and supports and protects the cell
Chloroplasts - Answer contains chlorophyll, which traps energy from the sun and uses it for
photosynthesis.
permanent vacuole - Answer stores cell sap and helps keep cell firm and rigid
Questions and Answers.
How do you work out magnification? - Answer multiply the magnifications of both the lenses
together
What does resolution mean? - Answer the smallest distance between 2 points that still can
be seen as 2 points
Light microscopes use... - Answer light and glass lenses to magnify an image
electron microscopes use... - Answer beams of electrons passing through a specimen to
build up an image
SI units in order from smallest to largest - Answer picometres, nanometers, micrometers,
millimeters
Eukaryotic cells - Answer cells with a nucleus
cell membrane - Answer a thin, bag like structure that controls what enters and leaves the
cell and separates one cell from another
Cytoplasm - Answer a jelly-like substance where most of the cells chemical reactions occur
Mitochondria - Answer a jelly bean like structure where aerobic respiration occurs
Nucleus - Answer controls the cells activities and contains chromosomes
field of view - Answer the circular area you see in a light microscope
Cell Wall - Answer made of cellulose, and supports and protects the cell
Chloroplasts - Answer contains chlorophyll, which traps energy from the sun and uses it for
photosynthesis.
permanent vacuole - Answer stores cell sap and helps keep cell firm and rigid
