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When loading samples in an electrophoresis gel, the the plunger of the micropipette should be depressed until after you have raised the micropipettor away from the gel.

is this true or false?

False.

Explanation:

This is referring to the gel electrophoresis lab... You should never depress the plunger of the micropipette after you have raised the micropipette away from the gel.

The kidney filter wastage and extra water from blood to form urine.

Explanation:

Kidney is the part of excretory system. So, the function of kidney is to make the excreta (wastage) out of the body. We have two kidneys which filter the blood and remove the wastage and extra water in the form of urine.

Hence, the kidney filter wastage and extra water from blood to form urine.