1
Q
what is a plasma membrane?
A
cell surface membrane
2
Q
what is diffusion?
A
movement of molecules from a high concentration to a low concentration
3
Q
what is facilitated diffusion?
A
molecules move from low concentration to a high concentration using ATP.
4
Q
what are the factors that effect simple diffusion?
A
- temperature
- diffusion distance
- surface area
- size of diffusing molecule
- concentration gradient
5
Q
what is osmosis?
A
the movement of water from a high concentration to a low concentration.
Biology A level
flashcards
Decks in class (25)
# Cards
-
Cell structure16
-
Biological molecules32
-
nucleic acids4
-
enzymes9
-
biological membranes5
-
cell division, cell diversity and acell differentiation13
-
exchange surfaces and breathing12
-
transport in animals40
-
transport in plants23
-
communicable diseases37
-
biodiversity7
-
classification and evolution3
-
communication and homeostasis10
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excretion9
-
neuronal communication5
-
hormonal communication6
-
plant and animal responses8
-
photosynthesis9
-
respiration7
-
cellular control5
-
patterns of inheritance8
-
manipulating genomes6
-
cloning and biotechnology8
-
ecosystems6
-
populations and sustainability6
