Which of the following properties is (are) characteristic of a benign tumor?

a. well differentiated              b. localized to tissue of origin             c. metastatic               

d. promotes angiogenesis        e. surrounded by a fibrous capsule

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#Question id: 11553

#SCPH28 | Zoology

Tadpoles must undergo a major metamorphosis to become frogs. This change includes reabsorption of the tail, growth of limbs, calcification of the skeleton, increase in rhodopsin in the eye, development of lungs, change in hemoglobin structure, and reformation of the gut from the long gut of an herbivore to the short gut of a carnivore. Amazingly, all of these changes are induced by thyroxine. What is the most likely explanation for such a wide array of effects of thyroxine?

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#Question id: 11554

#SCPH28 | Zoology

What happens in a cell when adenylyl cyclase is activated?

TLS Online TPP Program

#Question id: 11555

#SCPH28 | Zoology

Nitric oxide and epinephrine ________.

TLS Online TPP Program

#Question id: 11556

#SCPH28 | Zoology

During mammalian labor and delivery, the contraction of uterine muscles is enhanced by oxytocin. This is an example of ________.

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#Question id: 11557

#SCPH28 | Zoology

Which of the following has both endocrine and exocrine activity?

TLS Online TPP Program

#Question id: 11558

#SCPH28 | Zoology

Analysis of a blood sample from a fasting individual who had not eaten for 24 hours would be expected to reveal high levels of ________.