Melatonin levels are associated with
a. onset of puberty.
b. body temperature.
c. sleep cycles.
d. seasonal affective disorder.
e. all of these
Answer: e
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Refer to the figure above. Suppose new molecular analyses indicated that the phylum Annelida had diverged from the arthropod lineage after Onychophora and Tardigrada. What would this imply about protostome evolution?
1) Segmentation evolved only once within protostomes. 2) The annelid lineage gained and then lost the ability to molt. 3) The annelid lineage gained and then lost jointed limbs. A) 1, 2, and 3 B) 2 and 3 C) only 3 D) 1 and 2 E) 1 and 3
Which species of Burkholderia is the one most commonly found in clinical specimens?
a. Burkholderia ralstonia b. B. pseudomallei c. B. mallei d. B. cepacia
What problems are associated with desalination?
What will be an ideal response?
A female child inherits one X chromosome from her mother and one from her father. What sex chromosome does a male child inherit from each of his parents?
What will be an ideal response?