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Questions and Answers
What is the structure of the plasma membrane?
What is the structure of the plasma membrane?
- Consists of two layers of phospholipids with embedded proteins and sugars (correct)
- Consists of a single layer of cholesterol with embedded proteins and sugars
- Consists of two layers of cholesterol with embedded proteins and sugars
- Consists of a single layer of phospholipids with embedded proteins and sugars
What do membrane proteins provide?
What do membrane proteins provide?
- Channels for passage of large cellular structures
- Channels for passage of electrolytes and non-lipid soluble substances (correct)
- Channels for passage of water molecules only
- Channels for passage of only lipid soluble substances
What do some membrane protein molecules have attached to the outside of the cell?
What do some membrane protein molecules have attached to the outside of the cell?
- Protein molecules
- Lipid molecules
- Branched carbohydrate molecules (correct)
- Nucleic acid molecules
What is the arrangement of the phospholipid bilayer in the plasma membrane?
What is the arrangement of the phospholipid bilayer in the plasma membrane?
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What do membrane proteins act as for hormones and other chemical messengers?
What do membrane proteins act as for hormones and other chemical messengers?
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