Oxidation and reduction states are relatively easy to determine for metal ions, because there is a measurable net charge. In the case of carbon compounds, oxidation and reduction depend on the nature of polar covalent bonds
Which of the following is the best way to describe these types of bond?
(a) hydrogen bonds in a nonpolar solution
(b) covalent bonds in an aqueous solution
(c) unequal sharing of electrons across a covalent bond
(d) equal sharing of electrons across a covalent bond
(c)
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The lower genitourinary tract is usually free of microorganisms.
Answer the following statement true (T) or false (F)
The term complex as used in the Mycobacterium tuberculosis complex:
a. means that the identification of the organ-ism is complex and is only performed in large reference laboratories. b. is used to describe two or more species whose distinction is complicated and of little or no medical importance. c. refers to a set of organisms that are genet-ically indistinguishable but are phenotyp-ically different. d. refers to different subtypes of the bacteria M. tuberculosis.
What is contained in vascular bundles in leaves?
a. only xylem b. only phloem c. both xylem and phloem d. either or none may be present
Do you think that the altered amino acid sequence in sickle-cell betaglobin could alter the overall structure of hemoglobin? a. No, a single amino acid substitution is too small of a change to affect a largeprotein
b. Yes, a single amino acid substitution could radically affect the overall structure ofhemoglobin.