â¢ CATALASE (noun). The noun CATALASE has 1 sense: 1. enzyme found in most plant and animal cells that functions as an oxidative catalyst; decomposes hydrogen peroxide into hydrogen and water. Familiarity information: CATALASE used as a noun is very rare.
This POTENTIAL generally measures about 70 millivolts (with the INSIDE of the membrane negative with respect to the outside). So, the RESTING MEMBRANE POTENTIAL is expressed as -70 mV, and the minus means that the inside is negative relative to (or compared to) the outside.
The action potential is. â¢ a wave of electricity that travels down the axon of neuron â¢ from the cell body to the axon terminals This wave of electricity is actually a brief change in the resting membrane potential of the neuron â¢ from -70mv to +35mv Then the membrane returns to its resting potential of -70mv. î î î. Briefly opening more membrane gates for Na+ and then for K+ â¢ Thus making the neuron cell membrane o More permeable first to Na+ o Then to K+ â¢ This causes a change in the numbers of plus charges inside and outside the cell membrane o Changing the cell membrane potential.