During which stage of the cell cycle does the M checkpoint occur?
A. telophase
B. metaphase
C. S phase
D. G1
E. prophase
Answer: B
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The sub-atomic particle with a positive charge is _____.
A. a neutron B. an isotope C. an electron D. a proton E. an ion
Which of the following is true about stem cells?
a. All stems cells can develop into any other type of cell. b. Stem cells are unspecialized cells. c. Stem cells are undifferentiated cells derived from embryonic cells. d. Stems cells undergo meiosis to repair damaged tissue.
A type of genetic flow called the founder effect occurs when a small number of individuals from a
large population form a new colony. _________ Indicate whether the statement is true or false.
Polar molecules
A) have an equal distribution of electric charge. B) are always ions. C) have an overall negative electric charge. D) have an unequal distribution of electric charge. E) have an overall positive electric charge.