Summary Cell biology

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Summary - Cell biology

  • 1 Cell biology

  • Where are cells a basic unit for?
    All life on earth
  • Which typical cells are there
    Blood and bone cells
  • Where do all organisms exist out?
    Cells
  • Where do all cells come from?
    Pre-existing cells
  • What if cells are too small?
    Not all elements fit in
  • What if cells are too large?
    Exchange surface gets to small
  • 1.1.1.2.1 Prokaryotic

  • What do prokaryotic cells not have?
    Cell nucleus or any other membrane-bound organelles
  • In which organisms do prokaryotic cells live?
    Unicellular organisms (bacteria)
  • 1.1.1.2.2 Eukaryotic

  • What are Eukaryotic cells?
    Membrane-bound organelles
  • What can Eukaryotic cells do?
    Specialize
  • Where do Eukaryotic cells live in?
    Multi-cellular organisms (plant,animals)
  • 1.1.1.3 Activities

  • What do cells capture and release?
    Energy (feed or sun)
  • What do cells processing?
    Materials (Transport,production and digestion of moleculs)
  • What do cells process?
    Information (signals from environment)
  • Other cell activities are
    Reproducing and communicating
  • 1.1.1.4 Organic components

  • Name 4 organic components of the cell
    1. Carbohydrates
    2. lipids
    3. Nucleotids: DNA and RNA
    4. amino acids and proteins
  • 1.2 Proteins

  • What do proteins build?
    Molecules
  • What do proteins provide?
    Structure
  • What do proteins digest?
    Molecules (enzymes)
  • What do proteins copy?
    DNA & RNA
  • What do proteins send and receive?
    Messages (hormones, nerve system)
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What do high ADH levels increase? And by which duct?
High ADH levels increase reabsorption of water by the collecting duct
What is envolved (geevolueerd) in the herbivores?
The most elaborate (uitgebreide) adaptions for an herbivorous diet have evolved in the animals called ruminants
What travels through kidney when it is released?
Up) -> filtration rate at glomerulus
Down) -> aldosterone release
Down) -> NA+ reabsorption at DCT
Down) -> renin release
Down) -> ADH production and release
Where does ANP stand for?
Atrial natriuretic peptide
Whereby is aldosterone production regulate?
Aldosterone production is regulated by the hormone angiotensin II
What is the function of RAAS?
Regulates low blood pressure
Where does RAAS stand for?
Renin-angiotensin-aldosterone system
What does aldosterone for substance stimulate and excrete (uitscheiding)
Stimulates Na+ reabsorption and enhances K+ excretion
What does aldosterone stimulate?
It stimulates expression of genes coding transport proteins (bijv. Na+/K+ and ATpase
Which balance does aldosterone regulate?
Aldosterone regulates sodium and potassium balance