Gluconeogenesis is the process in which
glucose is formed from noncarbohydrate molecules
glycogen is formed
glucose is converted into carbon dioxide and water
glycogen is broken down to release glucose
The Correct Answer is A
A. glucose is formed from noncarbohydrate molecules: Gluconeogenesis is the metabolic process in which glucose is synthesized from noncarbohydrate precursors such as amino acids, lactate, and glycerol. This process primarily occurs in the liver and helps maintain blood glucose levels during fasting or intense exercise.
B. glycogen is formed: The formation of glycogen from glucose is called glycogenesis, not gluconeogenesis. Glycogenesis stores glucose for later use rather than producing it from noncarbohydrate sources.
C. glucose is converted into carbon dioxide and water: The breakdown of glucose into carbon dioxide and water occurs during cellular respiration, specifically glycolysis, the Krebs cycle, and oxidative phosphorylation, not gluconeogenesis.
D. glycogen is broken down to release glucose: The breakdown of glycogen to release glucose is called glycogenolysis. This process provides glucose when energy is needed but does not involve the formation of glucose from noncarbohydrate sources.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. blood and hyaline cartilage:Blood contains plasma and cells but very few fibers, and hyaline cartilage is mostly composed of a smooth extracellular matrix with limited collagen fibers. These tissues do not have abundant collagen.
B. ligaments, bones, and the superficial portion of the skin:While ligaments and bones contain collagen, the superficial portion of the skin (epidermis) is mostly epithelial tissue with minimal collagen, making this pairing inaccurate.
C. tendons, ligaments, and the deeper portion of the skin:Tendons and ligaments are rich in collagen fibers, which provide tensile strength. The deeper portion of the skin, the dermis, also contains abundant collagen, supporting skin structure and elasticity.
D. areolar tissue, tongue, and bones:Areolar tissue has loosely arranged collagen fibers, and the tongue contains muscle tissue interspersed with connective tissue, so collagen is present but not as abundant as in tendons and ligaments.
E. blood, adipose tissue, and osseous tissue:Blood and adipose tissue contain very few collagen fibers, while osseous tissue contains collagen within its mineralized matrix, making this combination inaccurate for abundant collagen.
Correct Answer is D
Explanation
A. Cytokinesis:Cytokinesis is the process where the cytoplasm divides after mitosis, resulting in two separate daughter cells. It follows nuclear division but is not the division of the nucleus and DNA itself.
B. Transcription:Transcription is the process of copying genetic information from DNA into messenger RNA (mRNA). It is part of protein synthesis, not cell division.
C. Interphase:Interphase is the phase of the cell cycle where the cell grows, performs normal functions, and duplicates its DNA in preparation for division. However, it is not the stage where the nucleus and DNA actually divide.
D. Mitosis:Mitosis is the process of nuclear division where replicated chromosomes are separated into two nuclei. This ensures that each daughter cell receives an identical set of genetic material.
E. Translation:Translation is the process where ribosomes synthesize proteins using mRNA as a template. It occurs in protein production, not during nuclear or DNA division.
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