Which one of the following annelid structures or events is not correctly paired with its role in locomotion?
A. circular muscles contract—segment becomes thin and long
B. longitudinal muscles contract—segment becomes thick and short
C. fluid in coelom—provides a hydrostatic skeleton
D. septum—allows each segment to move independently
E. chaetae—provides gas exchange surface for body muscles
E. chaetae—provides gas exchange surface for body muscles
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A deficiency of vitamin ____ may give rise to scurvy, a disorder in which skin and bones deteriorate and wounds are slow to heal
a. A b. B c. C d. E e. K
When the cap of an average gilled mushroom is cut off and placed on paper, a spoke-like print eventually appears on the paper under the cap. This powdery material would be
A. mycelia. B. basidiospores. C. sporangiospores. D. hyphae. E. conidiospores.
Which of the following diseases is not caused by a mutation in a mitochondrial gene?
A. myoclonic epilepsy B. neurogenic muscle weakness C. Turner syndrome D. Leber's Inherited Optic Neuropathy (LHON) E. cardiomyopathy
Which of the following pairs of traits represents analogous characteristics?
A) sparrow wings and penguin wings B) trout fins and frog legs C) bat wings and whale fins D) bat wings and dragonfly wings