Marble bone disease is a disease in which bone increases in mass and becomes abnormally hard. This disorder is most likely caused by the inactivity of which part of the body?
A) bone marrow
B) osteoblasts
C) osteoclasts
D) vertebrae
C
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A defective ribosome would have the MOST detrimental effect on
A. translation. B. replication. C. transcription. D. replication and transcription. E. replication and translation.
How is the Ti plasmid used to create transgenic plants?
a. The Ti plasmid allows all of the plant cells to host the bacteria Rhizobium radiobacter and thus express the foreign gene that was inserted into the bacterial chromosome. b. The Ti plasmid inserts the foreign gene directly into the plant's nuclear DNA. c. Once the Rhizobium radiobacter forms a tumor in the plant, the tumor cells can take up the foreign DNA and incorporate it into their chromosomes. d. The Ti plasmid inserts the foreign DNA into the DNA in the chloroplast. e. The Ti plasmid inserts the foreign DNA into the plant's mitochondrial DNA.
Proteins are one of the most ubiquitous, diverse, and functional types of molecule. Which of the following is one of the functions of protein?
a. insulation b. energy c. catalyzing reactions d. clarity
DNA replicates conservatively, which means that one of the two daughter double helices is "old" and the other is "new."
Indicate whether the statement is true or false