During mitosis, the centromeres _____, and daughter chromosomes go into _________.
Fill in the blank(s) with the appropriate word(s).
divide
each new nucleus
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Chromatin is composed of:
A. DNA. B. protein. C. DNA and RNA. D. DNA and protein. E. RNA and protein.
Plant hormones bind specific cellular receptor molecules that trigger gene expression responses. Which statement is correct concerning these responses?
A. Only cells lacking receptors can bind hormones. B. Only cells in the meristem can respond. C. Only cells that express the appropriate receptors can bind hormones. D. Only cells that have been previously activated can bind hormones. E. None of these choices is correct.
Peptidoglycan is a polysaccharide found only in bacteria.
a. true b. false
The pH of your small intestines is around 7.5 and the pH of your large intestine can be 5.5. As substances travel from the small intestines to the large intestine, what would happen to the H+ ion concentration?
A. It increases by 100-fold. B. It decreases 100-fold. C. It decreases 10-fold. D. It increases 10-fold. E. It increases 2-fold.