Which of the following play(s) a role in root nodule formation?
a. rhicadhesin
b. lectins
c. oligosaccharide signaling molecules
d. all of the above
Answer: D
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A virus is surrounded by a protein coat known as a ____
Fill in the blank with the appropriate word.
Match the terms appropriately
a. nitrogen-containing base, sugar, phosphate group(s) b. copy of an organism c. chromosome that does not determine sex d. DNA wrapped around histones e. fills in gaps, seals breaks in a DNA strand f. two chromosomes copies of each g. adds nucleotides to a growing DNA strand________ nucleosome________ clone________ nucleotide________ diploid________ DNA ligase________ DNA polymerase________ autosome
The water and minerals absorbed by the roots
usually first enter the
a. xylem. b. pith. c. cortex. d. root hairs. e. endodermis
In alcoholic fermentation, the final product is ____
a. pyruvate b. ethanol c. acetaldehyde d. acetyl CoA e. lactate