Which of the following is NOT true of the
effects of UV light on DNA?
a. it breaks DNA into pieces
b. it causes kinks in the DNA molecule
c. it causes the formation of nucleotide dimers
d. it causes covalent bond formation between
adjacent thymines
e. it causes permanent mutations
A
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Organisms containing DNA from an outside source are called
A. transcribed organisms. B. compound organisms. C. hybrid organisms. D. plasmid organisms. E. transgenic organisms.
Earthworms show all of the following features except
A. containing segments with a mouth on the first and the anus on the last. B. containing touch-sensitive and light-sensitive organs in the segments. C. containing fewer setae than in polychaetes. D. containing distinct head regions and parapodia. E. being hermaphroditic.
Describe the general properties of each of the four major classes of organic molecules, including the
major roles of each of them in cells.
What will be an ideal response?Four of the five answers listed below are members of the B complex vitamins. Select the exception
a. ascorbic acid b. folic acid c. pantothenic acid d. riboflavin e. thiamine