This protein structure results from the folding in of the alpha helix or pleated sheet.
quarternary
primary
secondary
tertiary
The Correct Answer is D
A. quaternary: Quaternary structure involves the interaction of multiple polypeptide chains, not folding of a single chain.
B. primary: Primary structure is the linear sequence of amino acids.
C. secondary: Secondary structure includes alpha helices and beta-pleated sheets, but not their 3D folding.
D. tertiary: Tertiary structure is the 3D shape formed by the folding of secondary structures, stabilized by hydrogen, ionic, and disulfide bonds.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. cellulose: Humans lack the enzyme cellulase, so we cannot break down cellulose, a plant polysaccharide, for energy.
B. starch: Starch is digestible; humans have amylase to break it down into glucose.
C. glycogen: Glycogen is stored in human liver and muscle and is easily digested.
D. monosaccharides: These are already single sugar units, like glucose, and require no digestion.
Correct Answer is B
Explanation
A. Organization:
Refers to the structured arrangement of parts from chemical to system level, not interaction with the environment.
B. Responsiveness:
Responsiveness is the ability to sense changes in the environment and react appropriately to maintain balance (homeostasis).
C. Growth and Development:
Refers to increase in size and complexity over time, not directly about environmental interaction.
D. Metabolism:
Involves internal chemical reactions but not necessarily interaction with external stimuli.
E. Waste Disposal:
A bodily process to remove waste, not primarily about environmental response.
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