3657772
Cell structure
and processes
- Transport across cells
- Passive processes (do
not require energy)
- Diffusion
- Net movement of molecules
of a substance from a region
of high concentration to a
region of low concentration
until equilibrium is achieved
(only for liquids/gas)
- Concentration gradient -->
difference in concentration
- Moving down/along the
concentration gradient
--> high con. to low con.
- Moving against the
concentration gradient is not
in the lower sec. syllabus
- Example: A hidden durian is brought
into the classroom (the durian smell
would diffuse until the whole
classroom smells evenly of durian)
- Concentration gradient -->
difference in concentration
- Net movement of molecules
of a substance from a region
of high concentration to a
region of low concentration
until equilibrium is achieved
(only for liquids/gas)
- Osmosis
- Net movement of water molecules in
a liquid body from a region of higher
water potential through a partially
permeable membrane to a region of
lower water potential until equilibrium
is achieved
- Water potential --> % of
water a substance contains
- Hypotonic to ___ --> solution has a higher water potential
- Isotonic to ___ --> solution has an equal water potential
- Hypertonic to ___ --> solution has a lower water potential
- Symbol for <water potential> --> Ψ
- Hypotonic to ___ --> solution has a higher water potential
- Water potential --> % of
water a substance contains
- Net movement of water molecules in
a liquid body from a region of higher
water potential through a partially
permeable membrane to a region of
lower water potential until equilibrium
is achieved
- Diffusion
- Active processes
(require energy)
- Active transport
- Active transport
- Passive processes (do
not require energy)
- Structure of cells
- Eukaryotic
(membrane
bound organelles)
- Animal
cell
- Plant
cell
- Animal
cell
- Prokaryotic
(non-membrane bound
organelles)
- Root
hair cell
- Red blood cell
(erythrocyte)
- Root
hair cell
- Eukaryotic
(membrane
bound organelles)
- Things to know
- Nucleus
- Controls activity of the cell
- Stores genetic information (for reproduction)
- Controls activity of the cell
- Chloroplast
- Site for photosynthesis
- Site for photosynthesis
- Mitochondria
- Site of respiration/energy (ATP) production
- Site of respiration/energy (ATP) production
- Vacuoles
- Storage
- Storage
- Plasma membrane
- Compartmentalise biochemical reactions
- Regulates substances travelling in & out
- Contains the cytoplasm of the cell
- Compartmentalise biochemical reactions
- Cellulose cell wall
- Provide structural support
- Fully permeable
- Fully permeable
- Provide structural support
- Note: Cytoplasm --> cytosol + organelles
- Nucleus
Medienanhänge
6 Kommentare
almost 10 years ago
(edited)
And for me its prob bc I do not want my bio score to drop and I actually prefer bio to math //sighs (subject biasedness I tell you)
almost 10 years ago
I have this odd dedication to math than any other topic we have left for eya (._.) Maybe it's because I actually have hopes of doing well in Math aissh
almost 10 years ago
Ahahahah maybe it's bc I'd rather be doing bio then math whoops
almost 10 years ago
i'll share mine wait ah
almost 10 years ago
xD
bello
almost 10 years ago
Dang Dwebbie that's some dedication 0w0
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