Bearded irises are long-day plants, requiring a night length of less than 12 hours to flower. Under
which of the following conditions should bearded irises flower?
1: Night length 14 hours, day length 10 hours
2: Night length 10 hours, day length 14 hours
3: Night length 14 hours, day length 10 hours; night interrupted in the middle by an intense
red flash
4: Night length 10 hours, day length 14 hours; day interrupted in the middle by half an hour
of darkness
a. only 1
b. only 2
c. both 1 and 3
d. both 2 and 4
e. 2, 3, and 4
E
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The portion of the nervous system that is responsible for both increasing heart rate and increasing movement of the
intestines is the ____.
a. peripheral nervous system b. sympathetic nervous system c. parasympathetic nervous system d. somatic nervous system e. interaction between the somatic and autonomic nervous systems
A waxy cuticle is secreted by _____
a. ground tissue c. a stoma b. epidermal cells d. root hairs
What statement describes the present situation in Canada for boys regarding the HPV vaccine?
A. Health Canada had NOT yet approved the HPV vaccines for boys between the ages of 9 and 26. B. Health Canada approved the HPV vaccines for boys between the ages of 9 and 26 but NO provinces are offering the vaccine free to boys. C. Health Canada approved the HPV vaccines for boys between the ages of 9 and 26 but ONLY six provinces are offering the vaccine free to boys. D. Health Canada approved the HPV vaccines for boys between the ages of 9 and 26 and EVERY Canadian Provinces and Territory is offering the vaccine free to boys.
Scientists at the biotechnology company Genentech created the first recombinant DNA product for use in humans. Approved by the Food and Drug Administration in 1982, this product was ________
A) a gene chip B) chymosin C) insulin D) human growth hormone E) erythropoietin