Could you possibly tell me what exactly you need help with? As my computer already has viruses, I am surely not going to click on any of those. Sorry!
Answer:
A
Explanation:
I believe the answer is A. One is polar and One is non polar. H20 is the polar one. Polar beans there is a charge to it and the bonds are unevenly distributed. Since the hygrogen molecules are negatively charged, they make it polar. This is why water can mix with salt and stuff. O2 is non polar because the bonds are equal. There is a even distribution of electrons between the two oxygens so it has an even balance. This causes it to be non-polar.
That is why I think it is A
Answer:
Explanation:
Ureter - carries urine from kidneys to bladder
bladder - storage placer for urine
Nephron - functional unit of kidney
Kidney - filter of waste material from blood
Urethra - exit way of urine from body
Answer:
increasing extension time
Explanation:
The Polymerase Chain Reaction is a technique widely used in molecular biology laboratories to amplify target DNA regions. The standard steps of a PCR are as follow 1-denaturation, 2-annealing and 3-elongation/extension. These steps are repeated 15-40 times in order to exponentially amplify the linear DNA fragment. It is well known that longer extension times can be used as a strategy to increase the yield of longer PCR products. This is because the extension time depends on the synthesis rate of the DNA polymerase used in PCR technique and the length of the DNA fragment to be amplified.
