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Cell Membrane Structure Quiz

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Questions and Answers

What is the main function of proteins in the cell membrane?

Maintain the cell's chemical climate and assist in molecule transfer (correct)

Form a lipid bilayer

Assist in forming amphipathic molecules

Give membranes flexibility

Which component forms a lipid bilayer in the cell membrane?

Cholesterol

Lipids

Proteins

Phospholipids (correct)

What is the main role of cholesterol in animal cell membranes?

Monitor and maintain the cell's chemical climate

Assist in molecule transfer

Provide structural support and regulate fluidity (correct)

Form a lipid bilayer

Why are phospholipids considered amphipathic molecules?

They have both hydrophilic and hydrophobic parts Signup and view all the answers

Which component helps to give membranes their flexibility?

Lipids Signup and view all the answers

What makes the lipid bilayer semi-permeable?

Amphipathic nature of phospholipids Signup and view all the answers

What is the function of glycoproteins in the cell membrane?

Assisting in cell recognition and acting as receptors and antigens Signup and view all the answers

Which statement best describes the composition of the cell membrane?

Composed of two layers of phospholipids and embedded with proteins Signup and view all the answers

What is the primary function of the cell membrane?

Regulating the entry and exit of substances into the cell Signup and view all the answers

In what type of cells are glycoproteins found?

In both prokaryotic and eukaryotic cells Signup and view all the answers

What role do receptor proteins play in cell function?

Facilitating communication with the external environment through signaling molecules Signup and view all the answers

What is meant by the term 'semi-permeable' when describing the cell membrane?

It allows only selected substances to diffuse across the membrane Signup and view all the answers

Which component of the plasma membrane is important for cell recognition and acts as receptors and antigens?

Glycoprotein Signup and view all the answers

What is the main role of glycolipids in the plasma membrane?

Assisting in cell recognition and acting as receptors and antigens Signup and view all the answers

What type of molecules make up the majority of the cell membrane's composition?

Carbohydrates bonded to lipids and proteins Signup and view all the answers

What is a characteristic feature of phospholipids in a cell membrane?

They contain both hydrophilic heads and hydrophobic tails Signup and view all the answers

Cell Membrane Structure Quiz

Choose a study mode

Podcast

Questions and Answers

What is the main function of proteins in the cell membrane?

Which component forms a lipid bilayer in the cell membrane?

What is the main role of cholesterol in animal cell membranes?

Why are phospholipids considered amphipathic molecules?

Which component helps to give membranes their flexibility?

What makes the lipid bilayer semi-permeable?

What is the function of glycoproteins in the cell membrane?

Which statement best describes the composition of the cell membrane?

What is the primary function of the cell membrane?

In what type of cells are glycoproteins found?

What role do receptor proteins play in cell function?

What is meant by the term 'semi-permeable' when describing the cell membrane?

Which component of the plasma membrane is important for cell recognition and acts as receptors and antigens?

What is the main role of glycolipids in the plasma membrane?

What type of molecules make up the majority of the cell membrane's composition?

What is a characteristic feature of phospholipids in a cell membrane?

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