During S phase, chromosomes are converted to what form?
A) chromatin B) karyotypes C) centrosomes D) sister chromatids
Answer: D
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The coelacanth is an example of a species that
is in
a. isolation. b. stasis. c. change. d. turmoil. e. sympatry
Involves study designs used to answer why? and how?
a. analytic epidemiology b. descriptive epidemiology c. differential epidemiology d. none of the above
Forms of the Ras protein found in tumors usually cause which of the following?
A) DNA replication to stop B) DNA replication to be hyperactive C) cell-to-cell adhesion to be nonfunctional D) cell division to cease E) excessive cell division
An effective vaccine does all of the following
EXCEPT a. produce a mild case of the disease. b. stimulate the production of effector T cells. c. cause memory cells to be formed. d. stimulate the production of effector B cells. e. produce passive immunity.