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Microbiology
Learn the toughest concepts covered in Microbiology with step-by-step video tutorials and practice problems by world-class tutors.
6. Cell Membrane & Transport
Introduction to Membrane Transport
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1
concept
Introduction to Membrane Transport
2m
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2
concept
Which Molecules Freely Cross Membranes?
5m
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3
Problem
Which molecule most easily diffuses across a biological membrane’s lipid bilayer, without help of a protein?
A
H2O
B
O2
C
H2PO4-
D
Glucose
E
Na+
4
concept
Map of the Lesson on Membrane Transport
2m
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5
Problem
According to the map above, what kind of large molecule transport is also called the process of cell “eating”?
A
Phagocytosis
B
Receptor-mediated Endocytosis
C
Exocytosis
D
Pinocytosis
E
Facilitated Diffusion