Down syndrome is a trisomy that involves
chromosome number
a. 3.
b. 5.
c. 15.
d. 19.
e. 21.
E
Biology & Microbiology
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Exposure of purified phospholipids to water results in the spontaneous formation of:
A. lipid bilayers. B. triacylglycerols. C. steroids. D. polypeptides. E. carbohydrates.
Biology & Microbiology
Repeating DNA regions of at least 1000 base pairs known as ____________________ can affect gene expression. Fill in the blank(s) with the appropriate word(s)
Biology & Microbiology
In Figure 43-3, the vestibular canal is labeled:a
1
b. 2
c. 3
d. 7
e. 8
Biology & Microbiology
The surface of a Paramecium is covered with thousands of short, hair-like ____
a. plasmadesmata b. pseudopods c. trichomes d. flagella e. cilia
Biology & Microbiology