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Cell Membrane Proteins and Transporters Quiz

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Cell Membrane Proteins and Transporters Quiz

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Questions and Answers

What is the main constituent of vegetable oil and animal fats?

Phospholipids

Membrane proteins

Triglyceride (correct)

Cholesterol

Which part of the phospholipids is hydrophobic and faces the inside of the cell membrane?

Cholesterol molecules

Polar heads

Fatty acid tails (correct)

Glycerol backbone

In cell membranes, where are membrane proteins predominantly located?

Inside the cell

In the cytoplasm

Embedded in the lipid bilayer (correct)

Attached to carbohydrates

Which lipid influences the fluidity of the cell membrane?

Cholesterol (A) Signup and view all the answers

What is the primary function of carbohydrates in the cell membrane?

Cell recognition and signaling (A) Signup and view all the answers

Which part of the lipid bilayer is water soluble and faces the outside environment?

Polar heads (C) Signup and view all the answers

How do proteins act within the cell membrane?

They float within a 'sea' of membrane lipids. (B) Signup and view all the answers

What is the selective barrier property of the cell membrane called?

'Selective Permeability' (C) Signup and view all the answers

How do the protein components vary in different membranes?

'Protein:Lipid' ratio varies (A) Signup and view all the answers

Which lipid is most abundant in all cellular membranes?

Phospholipids (C) Signup and view all the answers