Humans belong to which phylum?
A. Primates
B. Chordata
C. Mammalia
D. Eukarya
E. Animalia
Answer: B
Biology & Microbiology
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Is Nakano's quote from Science consistent with the textbook's claim that RNA is a good candidate for the first life form?
A) yes B) no
Biology & Microbiology
Which of the following respiratory tract defenses is mismatched?
A. Ciliary escalator - first line of defense B. IgA antibody - third line of defense C. Mucous membranes - third line of defense D. Nasal hairs - first line of defense E. Complement - second line of defense
Biology & Microbiology
____________________ is a condition characterized by increased mucus secretions in the bronchioles. Fill in the blank(s) with the appropriate word(s)
Biology & Microbiology
In a(n) monocot stem, vascular bundles are arranged in a circle. Indicate whether the statement is true or false
Biology & Microbiology