The smallest part of an element that still exhibits the chemical characteristics of that element is
an electron
an atom
a chemical bond
a proton
an orbital
The Correct Answer is B
A. an electron: An electron is a subatomic particle; it doesn’t retain the chemical properties of the element.
B. an atom: The atom is the smallest unit of an element that maintains its chemical identity and properties.
C. a chemical bond: A bond is the interaction between atoms, not a part of an element.
D. a proton: A proton is also a subatomic particle; it contributes to identity (atomic number) but isn’t an element by itself.
E. an orbital: An orbital is a region around the nucleus where electrons are likely to be found-it is not a unit of matter.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. homozygous recessive: That would be written as ww - both alleles being recessive.
B. homozygous dominant: WW means both alleles are dominant-this is homozygous dominant.
C. heterozygous dominant: That would be Ww-one dominant and one recessive allele.
D. heterozygous recessive: There is no such term; heterozygous always means one dominant and one recessive.
Correct Answer is D
Explanation
A. Urinary – Includes kidney & bladder; removes wastes: The urinary system includes the kidneys and bladder, which remove nitrogenous waste and regulate water and electrolyte balance.
B. Endocrine – Includes the hormone-producing glands: The endocrine system includes pituitary, thyroid, adrenal glands, etc., involved in metabolism, growth, and reproduction.
C. Respiratory – Includes lungs, involved in gas exchange & pH balance: The lungs are central to the exchange of O₂ and CO₂, which also helps regulate blood pH.
D. Digestive – Includes blood vessels, transports nutrients and gases to organs and wastes (CO2) from organs: Blood vessels are primarily part of the circulatory system, not the digestive system. The digestive system includes the mouth, esophagus, stomach, intestines, liver, pancreas, etc., which process food and absorb nutrients-not gas transport.
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