Cell Structure and Technologies (HSC SSCE Biology): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
Who proposed the fluid mosaic model and in what year?
Who proposed the fluid mosaic model and in what year?
Singer and Nicolson in 1972
What does it mean when cell membranes are described as selectively permeable?
What does it mean when cell membranes are described as selectively permeable?
Allow only certain molecules/ions to pass
What property does the phosphate group give to the phospholipid head?
What property does the phosphate group give to the phospholipid head?
Hydrophilic (water-loving)
What property do the fatty acid tails of phospholipids have?
What property do the fatty acid tails of phospholipids have?
Hydrophobic (water-hating)
How do phospholipids arrange themselves in the bilayer?
How do phospholipids arrange themselves in the bilayer?
Heads out toward water, tails in
Which lipid increases membrane flexibility in animal cells?
Which lipid increases membrane flexibility in animal cells?
Cholesterol
What is the main function of transport proteins?
What is the main function of transport proteins?
Allow specific substances to cross membrane
What is the function of receptor proteins in cell membranes?
What is the function of receptor proteins in cell membranes?
Enable cellular communication
What are glycoproteins composed of?
What are glycoproteins composed of?
Protein with carbohydrate attached
What is the function of adhesion proteins?
What is the function of adhesion proteins?
Link neighboring cells together