Compare and contrast characteristics of amphibians and reptiles. Include morphological structures, differences in
reproduction, respiration, circulation, and their habitats. What will be an ideal response?
Concepts to Consider: Most amphibians are tetrapods, and many have tails; the skin of
amphibians is moist and participates in gas exchange, whereas reptiles rely on lungs; many
amphibians lay eggs in water, and larvae known as tadpoles are free-swimming; reptiles lay
amniotic eggs; amphibians have a three-chambered heart, and some reptiles have a fourchambered
heart (the remainder have three chambers); because of their reproductive habits,
most amphibians must return to water to lay eggs; reptiles typically bury their shelled eggs
and may thrive in arid habitats. Many amphibians undergo metamorphosis during
development but reptiles do not.
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Which of the following correctly describes the path of a drop of blood leaving the human heart?
A. heart arteries arterioles capillaries venules veins heart B. heart veins venules capillaries arterioles arteries heart C. heart arterioles arteries capillaries veins venules heart D. heart venules veins capillaries arteries arterioles heart E. heart arteries veins capillaries arterioles venules heart
Clinicians should always be notified of "panic values," that is, potentially life-threatening results. An example of a panic value is a(n):
a. elevated thyroid level. b. positive urine culture. c. positive blood culture. d. elevated sodium level.
Evolution is defined as genetic change in populations over time
Indicate whether the statement is true or false
What is the purpose of regulatory proteins?
a. To store nutrients b. To defend against foreign invaders c. To catalyze a specific chemical reaction d. To control the expression of specific genes e. To strengthen and protect cells and tissues