An acid is
a compound that removes H+ ions from a solution
a compound that releases OH- ions into a solution
a compound that releases H+ ions into a solution
The Correct Answer is C
A. A compound that removes H+ ions from a solution: This describes a base, since bases decrease hydrogen ion concentration by binding or neutralizing H+ ions, which is the opposite of what acids do.
B. A compound that releases OH- ions into a solution: This also characterizes a base, such as sodium hydroxide, which increases hydroxide ion concentration rather than contributing hydrogen ions.
C. A compound that releases H+ ions into a solution: Acids are substances that increase the hydrogen ion concentration in a solution by releasing H+ ions, making the solution more acidic and lowering its pH.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. Bacteria: Most bacteria reproduce by binary fission, where the cell divides evenly into two identical daughter cells. Budding is not a typical method of bacterial reproduction.
B. Algae: Algae generally reproduce through binary fission, fragmentation, or sexual reproduction, but budding is not their main reproductive mechanism.
C. Yeast: Yeast, a type of fungus, often reproduce by budding, where a small outgrowth develops on the parent cell, enlarges, and eventually separates as a new individual cell.
D. Protozoa: Protozoa usually reproduce by binary fission or multiple fission, with some species reproducing sexually, but they do not reproduce by budding.
Correct Answer is B
Explanation
A. yeasts and molds: These are classified as fungi, not protists. They reproduce by spores and have distinct cellular structures different from protists.
B. algae and protozoa: Protists are a diverse group of mostly unicellular eukaryotes, and this category includes algae, which perform photosynthesis, and protozoa, which are animal-like and often motile.
C. helminths: Helminths are multicellular parasitic worms such as tapeworms and roundworms. They are not protists because they are much more complex organisms.
D. bacteria: Bacteria are prokaryotic microorganisms lacking a nucleus, while protists are eukaryotic and contain membrane-bound organelles.
E. viruses: Viruses are acellular entities that require a host to replicate, and they are not considered part of the protist kingdom.
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