Turtles are thought to be living representatives of which of the following lineages?
a. anapsids
b. archosaurs
c. lepidosaurs
d. synapsids
e. diapsids
A
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The bond in table salt (NaCl) is
a. polar. b. ionic. c. covalent. d. double. e. nonpolar.
In Drosophila, flies that are XXY but have a normal diploid set of autosomes have been found. Such XXY chromosome constitutions have also been found in humans. The sex of such individuals is expected to be:
A. female in both Drosophila and humans. B. male in Drosophila but female in humans. C. male in both Drosophila and humans. D. intersexes in Drosophila and males in humans. E. female in Drosophila but male in humans.
Which of the following cells is NOT infected by HIV?
A) helper T cells B) microglia C) B lymphocytes D) macrophages E) dendritic cells
Which of the following is an agent of the sexually transmitted disease chancroid?
A. Haemophilus aegyptius B. Haemophilus influenzae C. Haemophilus parainfluenzae D. Haemophilus ducreyi E. Haemophilus aphrophilus