Which type of bond involves donating or accepting electrons?
lonic
Covalent
Peptide
Hydrogen
The Correct Answer is A
A. Ionic: Ionic bonds form when one atom donates electrons and another accepts them, producing oppositely charged ions that attract each other.
B. Covalent: Covalent bonds involve sharing pairs of electrons between atoms rather than full donation/acceptance.
C. Peptide: A peptide bond is a specific covalent linkage between amino acids (amide bond), formed by sharing electrons in a covalent framework.
D. Hydrogen: Hydrogen bonds are weak electrostatic attractions between a hydrogen atom bonded to an electronegative atom and another electronegative atom, not electron transfer.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. Muscle: Muscle tissue is specialized for contraction and producing movement, not for lining surfaces or forming glands.
B. Connective: Connective tissue provides structural support, stores energy, and binds tissues, but does not primarily line surfaces or form glands.
C. Epithelial: Epithelial tissue covers body surfaces, lines cavities and tubes, and forms glands through specialized epithelial cells.
D. Nervous: Nervous tissue conducts impulses and processes information, not lining surfaces or gland formation.
Correct Answer is A
Explanation
A. Gut: The gastrointestinal tract—especially the colon—harbors the densest and most diverse microbial community in the body.
B. Lungs: The lungs have a low-biomass microbiome in health and far fewer microbes than the gut.
C. Kidneys: Kidneys are normally sterile in healthy individuals; detection of microbes usually indicates infection.
D. Skin: The skin supports a rich microbiome at its surface but overall microbial load is lower than that of the gut.
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