The starting point for the ovarian cycle is a ____
a. primary oocyte arrested in meiosis I
b. primary oocyte arrested in meiosis II
c. primary oocyte having just completed meiosis I
d. secondary oocyte arrested in meiosis I
e. secondary oocyte arrested in meiosis II
ANSWER: a
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Amanda was studying turtles based on DNA analysis. Under the current classification scheme, which of the following turtle species are thought to be most closely related? (1) Graptemys ouachitensis, (2) Trachemys scripta, (3) Apalone spinifera, (4) Graptemys kohni
A. 1 and 3 due to inductive reasoning B. 1 and 3 due to deductive reasoning C. 2 and 3 due to inductive reasoning D. 1 and 4 due to inductive reasoning E. 2 and 3 due to deductive reasoning F. 1 and 4 due to deductive reasoning
Water molecules are polar with ends that exhibit partial positive and negative charges. These opposite charges allow water molecules to attract each other through:
A. ionic bonds. B. covalent bonds. C. hydrogen bonds. D. peptide bonds.
What feature(s) would you use to determine the age of a woody twig?
What will be an ideal response?
Which of the following elements is most likely to carry a +1 charge in its ionic state?
A. Silicon B. Barium C. Argon D. Nitrogen E. Potassium