Which of these statements is false concerning
covalent bonds?
a. Atoms share electrons.
b. Molecules may possess many covalent
bonds.
c. Water contains polar covalent bonds.
d. Covalent bonds may be "double bonds."
e. In polar covalent bonds, electrons are
shared equally
E
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One finding of the Human Genome Project was that mutations in _____ can cause mutations in distant regions of the genome, which can result in cancer
a. DNA repair genes b. promoter regions c. introns d. SNPs e. open reading frames
The chains of an antibody molecule are bonded to one another by
A. disulfide bonds. B. hydrogen bonds. C. ionic bonds. D. oxygen bonds.
Monotremes differ from the other mammals in their
A. laying of shelled eggs. B. carnivorous nature. C. fur. D. containing a pouch for young to live. E. lack of milk-producing glands.
Cystic fibrosis is the result of:
A) an abnormal sodium channel protein. B) no sodium channel protein. C) cysts in the lungs. D) no sodium-potassium pump. E) an abnormal chloride channel protein.