Answer the following statements true (T) or false (F)
1. Phylogenetic analyses of some vertebrate mineralcorticoid and glucocorticoid receptors and their ligands has suggested that the hormones evolved prior to their receptors.
2. Vasotocin is present in non-mammalian vertebrates and shares structural and functional properties with mammalian antidiuretic hormone and oxytocin. Through these similarities it has been suggested that vasotocin could be the ancestral precursor to the posterior pituitary hormone in vertebrates.
3. Vitamin D is a hormone produced in part by exposure to sunlight.
4.
1. FALSE
2. TRUE
3.
4.
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A. PCR B. plaque C. hemagglutination D. direct (electron microscopic) count
The structures illustrated in the figure are found in the ____
a. mouth b. esophagus c. stomach d. small intestine e. colon
How did the control group differ from the
experimental group in the butterfly experiment? a. They were different species. b. Their native habitat area of the forest differed. c. They tasted worse. d. They were white-patterned. e. They preferred different flower species.
Which of these ecosystems has the lowest productivity?
A. temperate forest B. open ocean C. savanna D. lakes E. tropical forest