Podcast
Questions and Answers
What is the source of energy in primary active transport?
What is the source of energy in primary active transport?
- Carrier proteins
- Secondary molecular or ionic substances
- Breakdown of ATP or other high-energy phosphate compounds (correct)
- Ionic concentration differences
What is required for both primary and secondary active transport?
What is required for both primary and secondary active transport?
- Energy from ATP
- Molecular pumps
- Carrier proteins (correct)
- Ionic concentration differences
Which of the following is an example of a substance that can be actively transported through cell membranes?
Which of the following is an example of a substance that can be actively transported through cell membranes?
- Sodium ions (correct)
- Water
- Oxygen
- Nitrogen
What is the difference between primary and secondary active transport?
What is the difference between primary and secondary active transport?
Where do the carrier proteins involved in active transport reside?
Where do the carrier proteins involved in active transport reside?
What is the primary function of the sodium-potassium pump?
What is the primary function of the sodium-potassium pump?
What is the concentration of calcium ions in the intracellular cytosol compared to the extracellular fluid?
What is the concentration of calcium ions in the intracellular cytosol compared to the extracellular fluid?
How many receptor sites for binding sodium ions are present on the Na+-K pump?
How many receptor sites for binding sodium ions are present on the Na+-K pump?
What is the ATPase activity located on the Na+-K pump?
What is the ATPase activity located on the Na+-K pump?
What would happen to most cells in the body without the function of the Na+-K pump?
What would happen to most cells in the body without the function of the Na+-K pump?
How many primary active transport calcium pumps are mentioned in the text?
How many primary active transport calcium pumps are mentioned in the text?
What is the function of the carrier protein in the cell membrane?
What is the function of the carrier protein in the cell membrane?
In which organelles does the carrier protein pump calcium ions?
In which organelles does the carrier protein pump calcium ions?
What is the function of the ATPase enzyme in the carrier protein?
What is the function of the ATPase enzyme in the carrier protein?
In which part of the body is primary active transport of hydrogen ions important?
In which part of the body is primary active transport of hydrogen ions important?
What is the result of primary active transport of hydrogen ions in the gastric glands?
What is the result of primary active transport of hydrogen ions in the gastric glands?
What type of cells in the renal tubules are involved in primary active transport of hydrogen ions?
What type of cells in the renal tubules are involved in primary active transport of hydrogen ions?
What is facilitated diffusion also known as?
What is facilitated diffusion also known as?
What happens to the rate of facilitated diffusion as the concentration of the diffusing substance increases?
What happens to the rate of facilitated diffusion as the concentration of the diffusing substance increases?
What type of transporter is GLUT1?
What type of transporter is GLUT1?
What is the direction of movement in active transport?
What is the direction of movement in active transport?
What is the key difference between simple diffusion and facilitated diffusion?
What is the key difference between simple diffusion and facilitated diffusion?
What is the purpose of a carrier protein in facilitated diffusion?
What is the purpose of a carrier protein in facilitated diffusion?
