Suppose, while out camping in a forest, you found a chordate with a long, slender, limbless body slithering across the ground near your tent. This critter could be _____
A) a lampreys
B) a lungfish
C) a mammal
D) an amphibian
E) a skate
Answer: D
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All of the following can pass through a healthy placenta EXCEPT which one?
A) water B) nutrients C) oxygen D) some antibodies E) blood cells
What is the network of nerves that radiates out from the brain and the spinal cord part of?
A) the central nervous system B) interneurons C) the peripheral nervous system D) neurotransmitters
Based on the data in the accompanying figure, an infant with 90% survival (or 10% death) would weigh:a
11 lbs. b. 9 lbs.
c. 7 lbs. d. 5 lbs. e. 3 lbs.
The presence of Gram-negative diplococci in pus from an inflamed penis is diagnostic for infection by
A) human herpesvirus 2. B) Treponema pallidum. C) Neisseria gonorrhoeae. D) Chlamydia trachomatis. E) Mycoplasma hominis.