In humans<span>, </span>each cell<span> normally contains 23 pairs of </span>chromosomes<span>, for a total of 46.
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Heat radiation.
This is the form of heat transfer that doesn’t need a medium to transfer through.
That’s how heat from the sun gets to earth, even though empty space is very cold.
When there is not enough oxygen for cells to use cellular respiration<span />
Answer:
any of numerous complex proteins that are produced by living cells and catalyze specific biochemical reactions at body temperatures
They are formed primarily on the cell's Ribosomes.