Studies of a soybean plant (Glycine max) and the bacterium Bradyrhizobium japonicum have shown that after the bacteria enter the root, cells of the root cortex begin to divide. What is this a response to?
a. to a flavonoid released by soybean roots
b. to nod gene products produced by soybean roots
c. to nod gene products produced by the bacterium
d. to nitrogen fixation by the bacterium
Ans: c. to nod gene products produced by the bacterium
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Mitochondrial and chloroplast genomes typically
A) are composed of primarily noncoding DNA. B) encode all of the proteins needed for aerobic respiration and photosynthesis, respectively. C) encode for ribosomal and transfer RNAs. D) encode some of the proteins needed for aerobic respiration and photosynthesis, respectively. E) encode some of the proteins needed for aerobic respiration and photosynthesis, respectively, as well as ribosomal and transfer RNA.
ATP is produced in conjunction with electron transport using a specific process. What is this process called?
A) dehydration synthesis B) Calvin cycle C) anabolism D) chemiosmosis
Which of the following provides taxonomic information that includes the information obtained in the others listed?
A) nucleic acid hybridization B) nucleic acid-base composition C) amino acid sequencing D) biochemical tests E) cladogram
How is methylation of DNA maintained following DNA replication?
What will be an ideal response?