Podcast
Questions and Answers
What is the approximate resting membrane potential in a typical nerve cell?
What is the approximate resting membrane potential in a typical nerve cell?
- +70 mV
- -70 mV (correct)
- +7 mV
- 0 mV
What happens to the cell as the charge on the membrane approaches 0 from -70 mV?
What happens to the cell as the charge on the membrane approaches 0 from -70 mV?
- Hyperpolarization
- Stabilization
- Repolarization
- Depolarization (correct)
What is the direction of movement of molecules during vesicle transport?
What is the direction of movement of molecules during vesicle transport?
- Into the cell
- Within the cell (correct)
- Across the cell membrane
- Out of the cell
What is the role of carrier proteins in cellular transport?
What is the role of carrier proteins in cellular transport?
What is the result of the activation of adenylyl cyclase?
What is the result of the activation of adenylyl cyclase?
What is the link between a first messenger and a second messenger in cells that respond to peptide hormones?
What is the link between a first messenger and a second messenger in cells that respond to peptide hormones?
What is a characteristic of cell membranes?
What is a characteristic of cell membranes?
What is the primary function of the mitochondria in a cell?
What is the primary function of the mitochondria in a cell?
What is the basic structural and functional unit of the human body?
What is the basic structural and functional unit of the human body?
What type of glands secrete hormones directly into the blood?
What type of glands secrete hormones directly into the blood?
What is the term for the ability of a cell membrane to allow certain substances to pass through while keeping others out?
What is the term for the ability of a cell membrane to allow certain substances to pass through while keeping others out?
What is the primary component of an important buffer in the human body?
What is the primary component of an important buffer in the human body?
What is the primary reason water moves through nonpolar portions of cell membranes?
What is the primary reason water moves through nonpolar portions of cell membranes?
What is the term for the movement of molecules through a cell membrane without using energy?
What is the term for the movement of molecules through a cell membrane without using energy?
Which transport process involves the movement of molecules in the same direction across a cell membrane?
Which transport process involves the movement of molecules in the same direction across a cell membrane?
What is the term for the movement of molecules from an area of high concentration to an area of low concentration without using energy?
What is the term for the movement of molecules from an area of high concentration to an area of low concentration without using energy?
Which body fluid compartment contains higher levels of Na+, Cl-, and HCO3-?
Which body fluid compartment contains higher levels of Na+, Cl-, and HCO3-?
What is the term for the separation of substrates into specific organelles?
What is the term for the separation of substrates into specific organelles?
