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12 Questions

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Phospholipid Bilayer Formation

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Questions and Answers

What is the function of membrane proteins in the plasma membrane?

Transporting molecules across the membrane (correct)

Protecting the cell

Creating bends to prevent solidification

Attaching to antigens

Which type of membrane protein consists of an alpha helix with non-polar amino acids in the middle?

Peripheral

Glycoprotein

Integral (correct)

Cholesterol

What do glycolipids and glycoproteins do in the cell membrane?

Protect the cell (correct)

Attach to antigens

Create bends to prevent solidification

Transport molecules across the membrane

Which type of antigen is common to all blood types?

H-antigen Signup and view all the answers

What happens when someone receives antigens they do not already have?

The cells explode Signup and view all the answers

What type of blood is characterized by the absence of the Rh Factor?

Blood type O Signup and view all the answers

Why do phospholipids arrange themselves into bilayers in membranes?

To prevent exposure of the hydrophobic tails to water Signup and view all the answers

What is the role of cholesterol in the phospholipid bilayer?

It prevents leaking at high temperatures Signup and view all the answers

Which part of a phospholipid is hydrophobic?

Hydrophobic tail Signup and view all the answers

What does it mean for a molecule to be amphipathic?

It has both hydrophobic and hydrophilic parts Signup and view all the answers

Why are unsaturated hydrocarbon tails more suitable in cold environments?

They increase fluidity and prevent solidification Signup and view all the answers

How do phospholipids maintain their structure while allowing flexibility?

By rotating in place and bending their tails infrequently Signup and view all the answers