A distinctive feature of spirochaetes is the presence of
A. fimbriae
B. endoflagella
C. helically arranged pili
D. nucleosomes
E. variable surface antigens
Ans: B. endoflagella
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The chemoreceptors located in the aorta that detect change in the blood pH are the _______ bodies.
Fill in the blank(s) with the appropriate word(s).
Members of the class Bivalvia:A
have gills that secrete the shell. B. have a mantle that may form pearls. C. are all sessile. D. all have a radula. E. have a broad foot used for locomotion.
The honeycomb made by bees is made up primarily of ____.
A. carbohydrates B. nucleotides C. proteins D. lipids E. amino acids
Which statement regarding compound eyes is true?
A) They have one light-focusing lens. B) They are poor motion detectors. C) They can provide excellent color vision. D) They can perceive only visible light.