Podcast
Questions and Answers
Which structure acts as a hydrophobic barrier to keep hydrophilic molecules out of the cell?
Which structure acts as a hydrophobic barrier to keep hydrophilic molecules out of the cell?
- Cholesterol
- Integral proteins
- Peripheral proteins
- Phospholipid bilayer (correct)
What is the main function of glycolipids and glycoproteins in the cell membrane?
What is the main function of glycolipids and glycoproteins in the cell membrane?
- Transport of ions
- Enzymatic activity
- Cell-cell recognition (correct)
- Signal transduction
Which transport mechanism requires energy (ATP) and moves substances against their concentration gradient?
Which transport mechanism requires energy (ATP) and moves substances against their concentration gradient?
- Facilitated diffusion
- Osmosis
- Receptor-mediated endocytosis
- Active transport (correct)
What is the process by which cells take in macromolecules and form new vesicles?
What is the process by which cells take in macromolecules and form new vesicles?
In cell signaling, which step involves the activation of a cellular response after the reception and transduction of a signal?
In cell signaling, which step involves the activation of a cellular response after the reception and transduction of a signal?
What is the approximate composition of proteins and lipids in the plasma membrane of human red blood cells?
What is the approximate composition of proteins and lipids in the plasma membrane of human red blood cells?
Which model of the plasma membrane proposed the 'Sandwich model' in 1935?
Which model of the plasma membrane proposed the 'Sandwich model' in 1935?
What does the term 'selectively permeable' refer to in the context of the plasma membrane?
What does the term 'selectively permeable' refer to in the context of the plasma membrane?
What does the term 'Fluid Mosaic Model' indicate about the structure of the plasma membrane?
What does the term 'Fluid Mosaic Model' indicate about the structure of the plasma membrane?
Which method revealed the structure of the membrane's interior by using freeze-fracture technique?
Which method revealed the structure of the membrane's interior by using freeze-fracture technique?
What is the approximate composition of cholesterol in the plasma membrane of human red blood cells?
What is the approximate composition of cholesterol in the plasma membrane of human red blood cells?
What does the freeze-fracture method reveal about the structure of the membrane's interior?
What does the freeze-fracture method reveal about the structure of the membrane's interior?
What is the main function of glycolipids and glycoproteins in the cell membrane?
What is the main function of glycolipids and glycoproteins in the cell membrane?
What does the term 'Fluid Mosaic Model' indicate about the structure of the plasma membrane?
What does the term 'Fluid Mosaic Model' indicate about the structure of the plasma membrane?
Which type of protein aids in the movement of glucose through human red blood cells?
Which type of protein aids in the movement of glucose through human red blood cells?
In which type of transport does water move from an area of higher water potential to lower water potential?
In which type of transport does water move from an area of higher water potential to lower water potential?
What is the main function of glycolipids and glycoproteins in the cell membrane?
What is the main function of glycolipids and glycoproteins in the cell membrane?
What type of endocytosis involves the intake of fluids by the cell?
What type of endocytosis involves the intake of fluids by the cell?
Which process involves the expulsion of vesicle contents by fusing with the cell membrane?
Which process involves the expulsion of vesicle contents by fusing with the cell membrane?
What type of proteins aid in the attachment of the cell membrane to the cytoskeleton and extracellular matrix (ECM)?
What type of proteins aid in the attachment of the cell membrane to the cytoskeleton and extracellular matrix (ECM)?
Which molecule is involved in direct active transport and moves substances against their concentration gradient?
Which molecule is involved in direct active transport and moves substances against their concentration gradient?
What is the primary function of aquaporins in the cell membrane?
What is the primary function of aquaporins in the cell membrane?
Which molecule is known for its involvement in receptor-mediated endocytosis?
Which molecule is known for its involvement in receptor-mediated endocytosis?
What is the primary function of cholesterol in the plasma membrane?
What is the primary function of cholesterol in the plasma membrane?
Which type of transport involves the movement of ions through channel proteins or carrier proteins?
Which type of transport involves the movement of ions through channel proteins or carrier proteins?
What is the primary function of peripheral proteins in the cell membrane?
What is the primary function of peripheral proteins in the cell membrane?
