Apr. 1, 2015. TDK Corporation has announced that its Hong Kong-based HDD head manufacturing wholly owned subsidiary, SAE Magnetics (H.K.) Ltd.
You use a wrench to screw, or unscrew a bolt. A screwdriver is for screws. Either way you turn it left. Some bolts have reverse threads and would turn the other way to unbolt.
Select Unzip to divide the molecule. Selecting the Unzip button causes the DNA molecule to split lengthwise. In a real cell, the molecule unwinds from spools made of protein, then untwists. (Here the molecule is already unwound and untwisted.) The DNA now resembles a ladder. Enzymes, special kinds of proteins, move up the ladder, breaking the rungs.