Exam 2: Cell Physiology

Which of these statements describes mitochondria

Why can't the large, negatively charged intracellular proteins (A-) permeate the cell membrane

When equilibrium is achieved and no net diffusion is taking place, there is no movement of molecules.

The membrane potential that exists when the concentration and electrical gradients for a given ion exactly counterbalance each other is known as the ____________________.

Match the result, labelled a. or b., with the force and involved ion in question. (Options may be used more than once or not at all.) -electrical gradient for Na⁺ at resting potential

Match the terms, labelled a. through f., to their correct descriptions. (Options may be used more than once or not at all.) -site of intermediary metabolism

The sarcoplasmic reticulum stores ____________________ ions.

Which of the following does NOT apply to graded potential

A high percentage of sodium and potassium ions move during each action potential.

Which of these processes refers to extrusion of materials through the plasma membrane to the exterior of the cell

Which of these statements describes tetanus toxin

Which of these statements describes glycolysis

Match the terms, labelled a. through f., to their correct descriptions. (Options may be used more than once or not at all.) -houses the cell's DNA

Match the terms, labelled a. through c., with their characteristics, labelled 1. (Options may be used more than once or not at all.) -does not directly use inspired oxygen

Osmosis is which of these types of processes

Match the terms, labelled a. through c., to their descriptions. (Options may be used more than once or not at all.) -sweep mucus and debris out of respiratory airways

Classical neurotransmitters and neuropeptides are sometimes cosecreted from the same axon terminal.

In active transport, the stomach pumps ____________________ ions into its lumen.

Pinocytosis is a form of which of these processes

Because of the presence of tight junctions, passage of materials across an epithelial barrier must take place between the cells, not through them.