The veins of leaves are _____
I) composed of xylem and phloem
II) continuous with vascular bundles in the stem and roots
III) finely branched to be in close contact with photosynthesizing cells
A) only I
B) only II
C) only III
D) I and III
E) I, II, and III
Answer: E
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The base analog, 5-bromouracil substitutes for the nucleotide base, _____________, in a DNA
molecule. Fill in the blank(s) with the appropriate word(s).
Match the pathway with the characteristic or example
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The leukocytes that are involved in nonspecifically killing altered self-cells, such as tumor cells and
virus infected cells, are the __________. a. monocytes b. natural killer cells c. neutrophils d. B cells e. eosinophils