The Cell Lecture 1

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  • Created by: saraht83
  • Created on: 01-05-16 15:28
Amino acids polymerise into...
proteins
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Purines and pyramidines polymerise into...
polynucleotides which can directly guide the formation of exact copies of their own sequence
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Plasma Membrane
maintains homeostasis, is selectively permeable, communicates with outside environment, aids in binding and adhering.
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Cell Theory
cells are fundamental units of life, all organisms are composed of cells, cells come from pre-existing cells.
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Cell surface limited by...
surface-area:volume ratio
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Surface
area that interfaces with the cell's environment
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Volume
measure of space inside a cell
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Increasing volume...
decreases surface-area:volume ratio
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Prokaryotic cells
no nucleus, lack distinct organelles, some have cell walls, outside plasma membrane which maintains shape
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Eukaryotic cells
membrane-enclosed nucleus, compartments + organelles
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Cell wall of bacteria
made of peptidoglycan
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Gram -ve bacteria
outer layer of lipopolysaccharide encloses peptidoglycan layer
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Mycoplasma
bacteria with lack of cell wall, unaffected by some antibiotics
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Other cards in this set

Card 2

Front

Purines and pyramidines polymerise into...

Back

polynucleotides which can directly guide the formation of exact copies of their own sequence

Card 3

Front

Plasma Membrane

Back

Preview of the front of card 3

Card 4

Front

Cell Theory

Back

Preview of the front of card 4

Card 5

Front

Cell surface limited by...

Back

Preview of the front of card 5
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