Hypoparathyroidism leads to a dramatic drop in blood calcium, which causes
A. tetany (convulsions).
B. cretinism.
C. sleepiness.
D. mental retardation.
E. lethargy and hair loss.
Answer: A
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Ecotourism measures ecosystem services such as carbon dioxide processing or water retention and purification
a. True b. False
Which features are commonly found in the Arthropods?
a. Endoskeleton, antennae and metamorphosis b. Endoskeleton, proglottids and molting c. Exoskeleton, antennae and proglottids d. Exoskeleton, antennae and nematocysts e. Exoskeleton, antennae and metamorphosis
In the phospholipase C signal transduction pathway, which two second messengers are produced?
a. IP3 and DAG b. PIP2 and IP3 c. cAMP and IP3 d. phospholipase C and protein kinase A e. phospholipase C and G protein
Antibiotic resistance evolves in bacteria when ________
A) the presence of antibiotics favors bacteria that already have genes for resistance B) farmers do not use enough antibiotics in animal feed C) the antibiotics create resistance genes in bacteria D) none of the above