Carbohydrates are stored in the liver and skeletal muscle cells in the form of
glucose
cholesterol
triglycerides
glycogen
The Correct Answer is D
A. Glucose: Glucose is the immediate form of sugar circulating in the blood and used by cells for energy. However, it is not stored in large amounts inside the liver or skeletal muscles, as excess glucose must be converted into a storage form.
B. Cholesterol: Cholesterol is a lipid molecule involved in cell membrane structure and hormone synthesis. It is not a storage form of carbohydrates and is handled differently in the body compared to sugars and glycogen.
C. Triglycerides: Triglycerides are the main storage form of fats found in adipose tissue. They serve as long-term energy reserves but are not the form in which carbohydrates are stored in the liver or muscles.
D. Glycogen: Glycogen is the storage form of carbohydrates in the body, primarily stored in the liver and skeletal muscle. It serves as a readily available energy reserve that can be broken down to glucose when blood sugar drops or energy demands increase.
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 B
Explanation
A. In their resting state, all body cells exhibit a resting membrane potential: Every living cell maintains an electrical charge difference across its plasma membrane. Even non-excitable cells display a resting membrane potential, though it is most significant in nerve and muscle cells.
B. The resting membrane potential is maintained solely by passive transport processes: Passive diffusion of ions contributes to membrane potential, but active transport is also required. The sodium-potassium pump actively moves sodium out and potassium in, counteracting passive leaks.
C. The resting membrane potential occurs due to active transport of ions across the membrane due to the sodium-potassium pump: The sodium-potassium pump is vital because it maintains the steep gradients of sodium and potassium. Without this active transport, the gradients would dissipate, eliminating the resting potential.
D. The resting membrane potential is determined mainly by the concentration gradients and differential permeability of the plasma membrane to K+ and Na+ ions: Potassium has the greatest influence since the membrane is more permeable to K+ at rest. Sodium also plays a role, but the relative permeability differences primarily shape the resting potential.
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