When extra juvenile hormone is experimentally administered to worker bees, they ____
a. revert to performing the duties of younger bees
b. live longer
c. begin laying eggs
d. produce more octopamine
e. develop impaired memories
D
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The p700 photosystem is designated as photosystem
“I” because it a. absorbs light energy first. b. absorbs more energy than photosystem II. c. is the primary photosystem. d. is thought to have evolved first. e. obtains electrons before photosystem II.
What is the most frequent cause of infertility in males?
A. body weight B. pelvic inflammatory disease C. low sperm count D. tubal ligation E. endometriosis
Activities such as fidgeting and the maintenance of posture and muscle tone collectively lead to what is known as:
(a) non-exercise activity thermogenesis (b) non-exercise activity-induced homeostasis (c) diet-induced thermogenesis (d) the fasting phase
The archenteron of the developing frog eventually develops into which structure?
A) reproductive organs B) the blastocoel C) heart and lung D) digestive tract E) brain and spinal cord