Which of the following cell structures uses energy released by enzymes to recharge adenosine triphosphate molecules?
Endoplasmic reticulum
Ribosome
Mitochondria
Lysosome
The Correct Answer is C
a. Endoplasmic reticulum: The ER is involved in protein and lipid synthesis but is not the primary site of ATP synthesis.
b. Ribosome: Ribosomes are involved in protein synthesis but do not play a direct role in ATP production.
c. Mitochondria: Mitochondria are known as the powerhouses of the cell because they generate ATP through cellular respiration. Enzymes in the mitochondria facilitate the release of energy from nutrients, which is then used to recharge ATP molecules.
d. Lysosome: Lysosomes contain digestive enzymes that break down waste materials and cellular debris, but they do not produce ATP.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
a. Reabsorption: Reabsorption is the process by which the kidneys reabsorb water and other needed solutes from the filtrate back into the bloodstream.
b. Incontinence: Incontinence is the involuntary loss of urine.
c. Micturition: Micturition is the voluntary process of emptying the urinary bladder. Urine is produced by the kidneys, stored in the bladder, and released through the urethra when the bladder muscles contract and the sphincter relaxes.
d. Filtration: Filtration is the process by which the kidneys remove waste products and excess water from the blood to form urine
Correct Answer is C
Explanation
a. Neutral feedback: This term is not typically used in the context of endocrine regulation.
b. Stimulating feedback: This is not a standard term in endocrine homeostasis mechanisms.
c. Negative feedback: Correct. Negative feedback is the primary mechanism by which endocrine systems maintain homeostasis. It involves reducing the output or activity of any organ or system back to its normal range of functioning.
d. Positive feedback: Positive feedback amplifies changes rather than stabilizing them, and is less common in maintaining homeostasis
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