More stable than a hydrogen atom (atomic number 1)?
What will be an ideal response?
Two electrons completely fill the outermost electron shell of helium, but hydrogen must accept an electron before its outermost shell is filled.
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The term ________ refers to the degree or intensity of pathogenicity.
Fill in the blank(s) with the appropriate word(s).
According to one hypothesis, the first eukaryotic cells originated by
A. spontaneous generation. B. biogenesis. C. endosymbiosis. D. mitosis.
If three molecules of a fatty acid that has the formula C16H22O2 are joined to a molecule of glycerol (C3H8O3), then the resulting molecule would have the formula:
a. C48H96O6 b. C48H98O8 c. C51H68O6 d. C51H106O8 e. C51H104O9
A small amount of antigen is injected under the skin of a patient. After 30 minutes there is no apparent change at the injection site, but 36 hours later the patient reports that the area is red and swollen. This type of response is due to
A) type I hypersensitivity. B) type II hypersensitivity. C) type III hypersensitivity. D) type IV hypersensitivity. E) immunodeficiency.