All vertebrates have ________.
A. a skull and a backbone
B. four limbs and a backbone
C. hair and a backbone
D. scales and a backbone
Answer: A
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Protocol for testing susceptibility test systems include testing _____ consecutive days
a. daily for 7 b. bi-weekly for 30 c. every other day for 14 d. with use for 20
Some articular receptors, such as free nerve endings, are slow adapting. What does this mean?
a. They require a high threshold to become stimulated b. Once stimulated, they continue to send signals until the stimulus is removed c. Once stimulated, they send signals initially, but adapt to the stimulus and stop d. They require a low threshold to become stimulated
What is the difference between marsupial and placental mammals?
A. Placental mammals are fully developed before birth. Marsupials are born before they are fully developed and must complete their development in a pouch. B. Marsupials produce shelled eggs. C. Placentals nurse their young while marsupials do not. D. Marsupials do not produce milk and placentals do.
The specialized structure in a tube worm in which endosymbiotic, chemolithotrophic bacteria live is called a(n) ________.
Fill in the blank(s) with the appropriate word(s).