The ossa coxae and the sacrum make up the
a. pelvis
b. cranium
c. foot
d. spine
Ans: a. pelvis
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Two oocytes released from the same ovary at the same time and fertilized by two sperm results in
A) monozygotic twins. B) dizygotic twins. C) blighted ova. D) cloned embryos.
Which statement describes a difference between meiosis I and meiosis II?
a. DNA is replicated during meiosis II but not during meiosis I. b. Homologous chromosomes separate during meiosis I; sister chromatids separate during meiosis II. c. Meiosis I produces diploid cells; meiosis II produces haploid cells. d. Chromosomes align along the equatorial plane of the cell in meiosis I but not in meiosis II. e. Crossing-over occurs during meiosis II but not during meiosis I.
Chemical/physical barriers in the first line of defense do NOT include ______.
A. stomach acid B. mucus in the trachea C. macrophages D. tears
When the electrons from reduced cofactors are transferred to oxygen in mitochondria, the process is coupled to the formation of _______ molecules of ATP.
a. 2 b. 10-12 c. 22-24 d. 32-34