What is the most significant factor in the formation of a covalent bond?
A. the attraction of a hydrogen atom's nucleus to the nucleus of another atom
B. the transfer of one or more protons from one atom to another
C. the complete transfer of one or more electrons from one atom to another
D. the sharing of electron pairs between two atoms
Ans: D. the sharing of electron pairs between two atoms
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Why are lungs segmented?
What will be an ideal response?
The peritoneal membrane of the abdominal cavity secretes fluid to reduce friction between adjacent organs in the body. The tissue best suited to this description and function is ________.
A. simple columnar B. simple squamous C. stratified squamous D. elastic connective tissue
The groove that separates the atria from the ventricles is called the coronary _________
Fill in the blank(s) with the appropriate word(s)
Where does fertilization usually occur?
A) ovary B) vesicular (Graafian) follicle C) uterine (fallopian) tubes D) uterus E) vagina