Chemically straightening hair changes the shape of disulfide bonds, which alpha keratin protein; this is the second protein structure. However, as the hair continues to grow out, this keratin protein grows with it, thus outlasting the effects of the chemicals which change the shape of the protein.
B: They represent different concepts.
Jugular vein, cephalic vein, and the saphenous vein.
Answer:
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Explanation:
I believe the answer is C. B
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It's phase contrast microscopy
Because you need to contrast to see the specimen