Energy that is stored or inactive is
kinetic
effective
energy.
potential
The Correct Answer is D
A. Kinetic: Kinetic energy is the energy of motion, such as moving muscles or flowing blood, and is not stored energy.
B. Effective: “Effective energy” is not a standard classification in physics or biology; it does not specifically describe stored energy.
C. Energy: Energy is a general term and does not differentiate between stored and active forms.
D. Potential: Potential energy is stored energy that has the capacity to do work in the future, such as chemical energy in bonds, a stretched spring, or gravitational energy in elevated objects.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. They appear to be the molecular carriers of coded hereditary information: Proteins are not the carriers of hereditary information; that role belongs to nucleic acids like DNA and RNA. Proteins are synthesized based on genetic instructions, but they do not store genetic code themselves.
B. Their function depends on their three-dimensional shape: The specific three-dimensional conformation of a protein determines its functional properties, such as enzyme activity or receptor binding, making shape critical for proper function.
C. They may be denatured by heat or acidity: Proteins can lose their structure and function when exposed to extreme heat or changes in pH. Denaturation disrupts hydrogen and ionic bonds, altering the protein’s shape and activity.
D. They have both functional and structural roles in the body: Proteins serve multiple roles, including structural functions in connective tissues and functional roles such as enzymes, hormones, and antibodies, supporting diverse physiological processes.
Correct Answer is D
Explanation
A. 100-fold more: A 100-fold difference corresponds to a change of 2 pH units, but the pH difference here is only 1 unit (from 7 to 6).
B. 10-fold fewer: A lower pH indicates higher hydrogen ion concentration, not fewer.
C. 100-fold fewer: This also suggests a lower hydrogen ion concentration, which contradicts the fact that a pH of 6 is more acidic than neutral water.
D. 10-fold more: pH is a logarithmic scale, so each unit change represents a tenfold change in hydrogen ion concentration. A pH of 6 has ten times more H⁺ ions than neutral water at pH 7.
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