What is the function of kinetochores?
a. Kinetochores anchor spindle fibers to the centrioles.
b. Kinetochores are the site of DNA synthesis.
c. Kinetochores regulate the length of the cell cycle.
d. Kinetochores attach to microtubules during mitosis.
e. Kinetochores are involved in cytokinesis.
d
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In two-dimensional nano-liquid chromatography, a complex mixture of peptides is separated first by charge and then by solubility.
Answer the following statement true (T) or false (F)
All of the following are true statements about life zones EXCEPT:
a. Life zones are very broad geographical regions with similar physical characteristics. b. Terrestrial life zones are typically described by the dominant type of vegetation. c. Animals typically moved readily between different life zones in a geographical area. d. Each continent is made up of many different life zones
Polyclonal antibodies in serum contain
A. At least three different kinds of antigens B. A mixture of vaccines C. A mixture of antibodies D. At least three different kinds of cells
In sporadic cases of retinoblastoma, only two gene mutations are thought to be necessary in the same cell for a tumor to develop. This happens when an organism inherits a mutant allele and a wild-type allele forms the parents. When the wild-type allele
is mutated, resulting in tumorigenesis, this process is called, ________. A) gain of heterozygosity B) metastasizing C) attenuation D) loss of heterozygosity E) recombination