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

Biology & Microbiology

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A virus is surrounded by a protein coat known as a ____

Fill in the blank with the appropriate word.

Biology & Microbiology

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

Biology & Microbiology

The water and minerals absorbed by the roots

usually first enter the

a. xylem. b. pith. c. cortex. d. root hairs. e. endodermis

Biology & Microbiology

In alcoholic fermentation, the final product is ____

a. pyruvate b. ethanol c. acetaldehyde d. acetyl CoA e. lactate

Biology & Microbiology