Because oxygen is more electronegative than hydrogen, the water molecule is:
A. hydrophobic.
B. hydrophilic.
C. nonpolar.
D. ionic.
E. polar.
E. polar.
Biology & Microbiology
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Hydrogen, atomic number 1, has 3 isotopes, 1H, 2H, 3H. 1H is comprised of one proton, one neutron and one electron
Indicate whether the statement is true or false.
Biology & Microbiology
Dogs have a diploid chromosome number of 78 . How many chromosomes do their gametes have?
a. 39 b. 78 c. 156 d. 234
Biology & Microbiology
The olfactory epithelium is located in the roof of the mouth
____________________ Indicate whether the statement is true or false.
Biology & Microbiology
What percentage of species listed under the U.S. Endangered Species Act are threatened because of competition, predation, parasitism, and herbivory by introduced species?
A) 5% B) 10% C) 20% D) 40% E) 100%
Biology & Microbiology