The Cell Lecture 10

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  • Created by: saraht83
  • Created on: 01-05-16 18:32
Microbes
secrete fungal sex pheromones
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Plants
secrete gibberellins
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Mammals
secrete growth hormone
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Intracellular compartment (targeting)
nucleus, mitochondrion, lysosome, chloroplast
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Extracellular compartment (secretion)
periplasm, cell wall, bloodstream
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Animal/plant hormones
secrete proteins for cell communication
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Hormones
secreted by cells, diffuse into extracellular fluid and are distributed by the circulatory system
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Endocrine cells
aggregate into secondary organs called endocrine glands
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Growth hormone
synthesized and secreted by anterior pituitary, acts on many tissues to promote growth, stimulates cells to take up amino acids and liver to produce insulin-like growth factors which stimulate bone/cartilidge growth
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Gigantism
overproduction of GH in children
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Pituitary dwarfism
underproduction of GH
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Plant growth hormone
plant embryo secretes gibberellins, triggers changes in the aleurone layer inside seed coat causing it to synthesize and secrete enzymes that digest proteins and starch stored in endosperm
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Plant gibberellins
not proteins, large family of closely related organic compounds
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Gibberellin A1
controls plant stem elongation, treating dwarf plants with this restores normal growth
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Fungal sex pheromones
allow fungi to recognise cells of opposite mating type and promote mating
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Yeast alpha-factor
short peptide that is processed by cleavage from long polypeptide, secreted from yeast alpha cells and detected by yeast a cells, promotes mating between a and alpha cells
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Other cards in this set

Card 2

Front

secrete gibberellins

Back

Plants

Card 3

Front

secrete growth hormone

Back

Preview of the back of card 3

Card 4

Front

nucleus, mitochondrion, lysosome, chloroplast

Back

Preview of the back of card 4

Card 5

Front

periplasm, cell wall, bloodstream

Back

Preview of the back of card 5
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