Q Ch0202 Tools of the Biologist

1
Q Ch0202 Tools of the Biologist

• How do instruments improve observations? SR1.
  p.19.1.3
• What does an electron microscope use instead of
  light to magnify the image of an object? . p.24
• What does centrifugation accomplish and how? .
  p.25
• What is a tissue culture? p.26
• If on a microscope a student uses a 43x objective
  lens and a 10x eyepiece lens, what is the total
  magnification?.

By extending the range and accuracy of the human
senses.
An electron beam focused by magnets
Separates materials of different densities by
spinning
Maintaining living cells in a jar outside of
the body.
43x10 430x