Choanoflagellates are:
A. fungi.
B. protists.
C. plants.
D. animals.
B
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The cell membranes of wall-less archaeons are strengthened by
A. glycoprotein or protein layers. B. diglycerol ethers. C. pseudomurein. D. diglycerol tetraethers.
Indifferent gonads develop
A) during the first two weeks of prenatal development. B) during the fifth week of prenatal development. C) during the ninth week of prenatal development. D) when the embryo becomes a fetus.
In the human male, sperm are produced in the
a. bulbourethral glands. b. prostate. c. seminiferous tubules. d. vas deferens. e. epididymis.
The ________ bones are two small bones found at the corner of the eyes that have a duct system that drains tears from the eyes into the nasal chambers
A) lacrimal B) frontal C) occipital D) temporal