Depolarizing the membrane during an action potential first involves the flow of sodium (Na) ions into the membrane.
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An action potential is a rise and subsequent fall in voltage or membrane potential across a cellular membrane. At the resting potential (high concentration of Na+ outside the cell and low of the K+, different inside the cell), K channels are closed. When Na channels open (by stimulus), the membrane depolarizes. When depolarization reaches the threshold potential, it triggers an action potential. Generation of the action potential brings the closing of Na channels. When Na channels close and K channels open, the membrane repolarizes.</span>
Earth is round and without the word "Art" Earth is just Eh
Answer:
Enzymes such as amylase ,protease and lipase are liable for solubilizing spare food materials in form of starch, protein and lipids correspondingly
in seed and deliver energy and other fundamentals food materials to germinating embryo.
The seed proteins are catalyzed by protease enzyme and break it into amino acid and peptides that a e transferred to growing embryo.
The amino acids obtained from metabolism of the proteins are further used in biosynthesis of enzymes,hormones,proteins, pyrimidines and Purine bases.
The starch is catalyzed by enzyme amylase that provides the food materials for growth and development of embryo . Similarly lipase are enzymes that are responsible for metabolism of the triacylglycerols into glycerols and fatty acids.This is also the source of energy for growing embryo
Answer:
O átomo
Explanation:
O átomo constitui a molécula e tudo é feito de moléculas