The first picture is hypersonic, because water is moving to the outside. This means the solution has much more salt than the cell does. The second photo is hypotonic, because water is entering the cell. This means the solution has the same amount as the cell. The last photo is isotonic, because water is moving both in and out of the cell. This means both the cell and the solution have equal amounts of salt.
Acetic Anhydride poses a hazards from exposure to mouth, nose
and throat, skin, eyes that can cause cough, shortness of breath, sore throat,
skin burns, blisters, redness and pain in the eyes, abdominal pain and shock.
when working with acetic anhydride, safety precautions include:
<span>1.
</span>REFRAIN from any form of CONTACT. Wear
protective clothing, gloves, goggles and face shield/ breathing protection.
<span>2.
</span>Provide adequate ventilation.
<span>3.
</span>Avoid open flames and smoking.
<span>4.
</span>Use explosion-proof electrical equipment.
DNA is made up of molecules called nucleotides. Each nucleotide contains a phosphate group, a sugar group and a nitrogen base. The four types of nitrogen bases are adenine (A), thymine (T), guanine (G) and cytosine (C). The order of these bases is what determines DNA's instructions, or genetic code.