During a brain surgery, a surgeon passes an instrument through the dura mater. Which one of the following does the surgeon pass through next?
A) bones of the skull
B) vertebrae
C) cerebrospinal fluid
D) pia mater
E) arachnoid
E
Biology & Microbiology
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The tissue that regrows a leaf from its base is the
A. intercalary meristem. B. lateral meristem. C. vascular bundle. D. apical meristem. E. tracheid.
Biology & Microbiology
Binding of one oxygen molecule to hemoglobin facilitates binding of the next two molecules; thus oxygen binding shows positive _______.
Fill in the blank(s) with the appropriate word(s).
Biology & Microbiology
Which of the following is a polymer?
A) wax B) steroid C) nucleic acid D) fat
Biology & Microbiology
The name of the "tailbone" is the
A. coccyx. B. lumbar. C. sphinoid. D. sacrum. E. axis.
Biology & Microbiology