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Topic 3: Voice of the genome A-Level Biology 2015
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Topic 3: Voice Of The Genome,Cell structure
Eukaryotic cells (animal and plant cells)
● More complex cells
● They have a nucleus
● They have membrane bound organelles
Prokaryotic cells (bacteria cells)
● No membrane bound organelles
Nucleus drawing:
Mitochondria drawing:
Nucleus
Mitochondria
circula ring of DNA
Chloroplasts
, Golgi
apparatus
Rough and
smooth
endoplasmic
reticulum
The role of the rER and Golgi apparatus in protein transport in cells
Extracellular enzymes - enzymes found on the outside of the cell
Types of proteins secreted from cells
● Enzymes
● Neurotransmitters
● Hormones
● Antibodies
The structure of plant cells (taken from topic 4)
Pits and plasmodesmata help plant cells to communicate with each other
and transport substances between them.
Similarities between pits and plasmodesmata:
● Both pits and plasmodesmata are present in plant cells
● Plasmodesmata are abundant in pit membranes
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