All of the following maternal nutritional conditions may cause congenital anomalies in the embryo, EXCEPT
A. Diabetes
B. Iodine Deficiency
C. Lack of GI Microbiome Diversity
D. Obesity
E. Vitamin Deficiency
Answer: C. Lack of GI Microbiome Diversity
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The diurnal or nocturnal behavior of animals is regulated - in a large part - by which of the following hormones?
A. calcitonin B. serotonin C. melatonin D. oxytocin E. epineprhine
During the snowball earth temperatures at the equator rarely exceeded -20 degrees Celsius. Why didn't heat from the sun melt the ice?
A. The high levels of atmospheric moisture created extensive cloud cover. B. Ice reflected most of radiant energy. C. The ozone layer absorbed all the heat. D. The earth's core was cooled and kept the ice frozen.
Your colleague is studying a newly discovered organism. She is becoming increasingly convinced that the organism is an arthropod. You find that you must respectfully disagree when you note that the organism has a set of distinctly nonarthropod characteristics. The features that cause you to exclude the organism from the arthropod grouping are
A. jointed legs, ecdysis, and an exoskeleton. B. antennae, six legs, and mandibles. C. compound eyes, book lungs, and a hemocoel. D. Malpighian tubules, ommatidia, and tagmata. E. pseudocoel, closed circulatory system, and ventral heart.
Which of the following is likely a symptom of exposure to the venom latrotoxin?
a. malfunction of sodium–potassium pumps b. paralysis c. constant muscular contractions d. continuous action potentials along axons