Cell organelles T3 Flashcards

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1
Q

Describe three structural differences between prokaryotic and eukaryotic cells.
(3)

A
  • Presence of membrane bound organelles in eukaryotic, such as mitochondria.
  • Presence of plasmids in prokaryotic.
  • Larger ribosomes in eukaryotic.
  • Eukaryotic DNA in nucleus.
  • DNA/Chromosome in eukaryotic linear, circular in prokaryotic.
  • Cell walls always present in prokaryotic, not always in eukaryotic.
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2
Q

What is meant by molecular phylogeny.

3

A
  • Molecular dif./sim.
  • In DNA and RNA.
  • In proteins.
  • Evolutionary relationship between organisms.
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3
Q

How do you calculate magnification?

A

image size/ actual size x magnification

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4
Q

Describe the roles of the Golgi apparatus and vesicles in the formation and transport of extracellular enzymes.
(4)

A
  • Vesicles fuse with/proteins enter Golgi apparatus.
  • Modification of proteins inside Golgi apparatus.
  • Protein/enzyme packaged into secretory vesicles.
  • Vesicles fuse with cell surface membrane.
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