Although some early amniotes developed endothermy, which amniote is an ectotherm?
a. armadillo
b. eagle
c. snake
d. platypus
e. roadrunner
ANSWER: c
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What is the main purpose of light-dependent reactions of photosynthesis?
A) to generate oxygen by "splitting" H2O B) to produce NADPH for use in respiration C) to produce NADPH and ATP D) to use ATP to make glucose
Nitrogen-bearing compounds that affect animal nervous systems and are often bitter tasting belong to which class of compounds?
A. terpenoids B. phenols C. alkaloids D. latex E. proteins
If you were designing a new insecticide absorbed via the respiratory system in arthropods, the killing chemical would enter the invertebrate through the
A. epidermis. B. tracheae. C. alveoli. D. bronchioles. E. gills.
The hormone ____ is involved in a positive feedback cycle that results in strong uterine contractions during labor
a. estrogen b. oxytocin c. cortisol
d. progesterone e. prolactin