The bones and cartilage in animals serve the same function as ________ in plants?
A. leaves
B. phloem
C. capillaries
D. wood
E. xylem
D. wood
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If 0.08 mol of phenol and 0.03 mol of NaOH are combined in a total volume of 0.1 L, what would be the pH of the solution? The pKa of phenol is 9.9
A. 10.5 B. 8.5 C. 9.5 D. 9.7 E. 9.9
Why can an infection in the brain's ventricles usually be detected in spinal fluid obtained from the lower back (lumbar region)?
A. Cerebrospinal fluid (CSF) originates in the ventricles, but percolates over and around the brain and spinal cord. B. There is a high degree of vascularity that exists, allowing easy transfer of bacteria in the cerebrospinal fluid (CSF) and the blood. C. There is a set of lymph nodes specifically in place to drain the cerebrospinal fluid (CSF) from the ventricles. They are housed in the lumbar region of the spinal column, adjacent to the spinal cord. D. This is an incorrect statement. Since the central nervous system (CNS) is a protected site due to the blood-brain barrier, there can never BE an infection in the ventricles.
Which type of plant hormone was first discovered in experiments to define the nutrient media required
for plant tissue culture?
a. gibberellins b. cytokinins c. salicylic acid d. auxins e. brassinosteroids
Charles Darwin was the first person to discover the hormone auxin
Indicate whether the statement is true or false.