Answer:
Birch tree leaves look like scratchy raindrops, like someone tore tiny pieces (Serrated) from them. The venation looks like a tree, a bunch of veins duplicating from only 1 .
Some oak tree leaves have serrated leaves or are completely smooth. Their venation look Dichotomous.
Pine tree leaves look undulate and the venation is pinnate.
It would be two i guess because 3 times 2 is 6
Answer:
The brain and the spinal cord are wrapped in three protective layers of tissue called the meninges. The cerebral spinal fluid goes between these layers to provide more cushion and protection. It nourishes and protects the nerve tissues of the brain and spinal cord. It also acts as a shock absorber, considering humans move a lot and fall.
<span>For the first step, you must isolate the cells from the media. The cells contain the DNA so you keep the cells and pellet.
The next step would be a cell lysis which causes the cells to open and the DNA to come out. At this point you would keep the supernatant, as the pellet is the cell membrane and other parts of the cell.
The chelex is to bind to transition metal ions. This would cause and DNases in the cell to become inactive because the metal ion is their cofactor. The pellet in this case would contain the chelex and the DNA would still be in the supernatant.</span>
Answer:
If the egg does not become fertilized, the lining of the uterus (endometrium) is shed during menstruation. The average menstrual cycle lasts 28 days.