Quiz 1

Question 1

genes

Answer 1

provide instructions for cell form, function, and complex behavior

Question 2

LUCA

Answer 2

last universal common ancestor
produced bacteria, archaea, and eukarya

Question 3

prokaryotes

Answer 3

single celled organisms
no nucleus or organelles
two domains: bacteria and archaea

Question 4

Robert Hooke

Answer 4

coined the term cell in 1665 using light microscope

Question 5

Schleiden and Schwann

Answer 5

cells were building blocks of life 1838-1839
work led to Cell Theory

Question 6

Light Microscope

Answer 6

examination of cells and some of their components
light from underneath

Question 7

Fluorescence Microscope

Answer 7

Light from the side
use illumination and electron image processing to see fluorescently labeled cell components in finer detail
resolution of 20 nm

Question 8

Electron Microscope

Answer 8

reveals fine structures of cell
resolution of a few nm
transmit beam of electrons through sample

Question 9

Scanning Electron Microscope

Answer 9

scatter electrons off surface of sample
look at surface in detail

Question 10

Endosymbiotic Theory

Answer 10

anaerobic pre-eukaryotic cell engulfed aerobic bacterium
explains mitochondria in eukaryotic cell