Biological Membranes (OCR A-Level Biology A): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
ShowHide
Practise the questions
10 questions from this quiz
What enables cells to communicate in multicellular organisms?
What enables cells to communicate in multicellular organisms?
Chemical messenger molecules
Which molecules serve as the primary receptors for cell signalling?
Which molecules serve as the primary receptors for cell signalling?
Glycoproteins
What determines receptor specificity for messenger molecules?
What determines receptor specificity for messenger molecules?
Complementary molecular shapes
What defines a target cell?
What defines a target cell?
Has receptors for a specific messenger
Why don't skeletal muscle cells respond to glucagon?
Why don't skeletal muscle cells respond to glucagon?
They lack glucagon receptors
Which is NOT a mechanism of receptor action?
Which is NOT a mechanism of receptor action?
DNA replication initiation
What proportion of medicinal drugs target membrane receptors?
What proportion of medicinal drugs target membrane receptors?
Approximately half
How do antihistamines prevent inflammation?
How do antihistamines prevent inflammation?
Competitive inhibition of receptors
Why can't morphine cross the phospholipid bilayer?
Why can't morphine cross the phospholipid bilayer?
It is water-soluble
What effect does naloxone have on morphine?
What effect does naloxone have on morphine?
Blocks morphine via competitive inhibition