Chapter 2/4: Plasma Membranes Flashcards
What structure can be found in all bacterial cell envelopes?
Plasma membrane
What is a plasma membrane composed of?
Phospholipids
What acts as channels for nutrient transport and protein secretion across the plasma membrane?
Integral membrane proteins
What type of molecule increases the stability of plasma membranes in many eukaryal cells?
Cholesterol
What type of molecule increases the stability of plasma membranes in some bacteria?
Hopanoids
What type of protein channels can move H2O across the plasma membrane?
Aquaporin
Which two types of large molecule transport requires energy and protein channels?
Active transport, Group tanslocation
What type of large molecule transport modifies the nutrient during transport?
Group translocation
What are the two types of co-transport?
Symport, Antiport
What type of large molecule transport uses the energy of one concentration gradient to drive movement of another particle against its gradient?
Co-transport
What type of large molecule transport uses ATP cleavage to drive movement against its concentration gradient?
ABC transport
What type of large molecule transport uses a phosphate group transfer to ‘trick’ the concentration gradient?
Group translocation
