The letter "B" in the accompanying figure represents ____
a. pericycle
b. endodermis
c. xylem
d. root cortex
e. phloem
ANSWER: e
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The most common etiologic agent of septic arthritis in adults younger than 30 years of age is:
a. Neisseria gonorrhoeae. b. Staphylococcus aureus. c. Haemophilus influenzae. d. Streptococcus agalactiae.
An animal with a ladder-like nervous system is the
A. earthworm. B. hydra. C. planarian. D. cat. E. octopus.
A trinucleotide repeat refers to:
A) a nucleotide that is made of three subunits: a sugar, a phosphate, and a nitrogenous base. B) the same nucleotide repeating three times in a row. C) a nucleotide that contains three bases. D) a sequence of three nucleotides that repeats and can be involved in genetic diseases.
Goblet cell hyperplasia is associated with asthma. Based on their function, what is the likely outcome of an overabundance of goblet cells?
A. Excess O2 absorption B. Decreased mucus production C. Excess mucus production D. Decreased CO2 absorption