Chondroblasts
within the cartilage divide and secrete new matrix
remain in compact bone even after the epiphyseal plate closes
are mature cartilage cells located in spaces called lacunae
never lose their ability to divide
The Correct Answer is A
A. within the cartilage divide and secrete new matrix: Chondroblasts are immature cartilage cells responsible for producing and secreting the extracellular matrix, including collagen and proteoglycans. They actively divide and contribute to cartilage growth, especially at the periphery (appositional growth).
B. remain in compact bone even after the epiphyseal plate closes: This description more closely matches osteocytes in bone, not chondroblasts. Chondroblasts are specific to cartilage and do not persist in compact bone after growth plates close.
C. are mature cartilage cells located in spaces called lacunae: This describes chondrocytes, the mature form of cartilage cells that reside in lacunae and maintain the matrix, rather than actively secreting it like chondroblasts.
D. never lose their ability to divide: Chondroblasts can divide while immature, but once they mature into chondrocytes, their division is very limited. Therefore, they do lose much of their proliferative capacity after maturation.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
False:Cellular respiration is a catabolic reaction because it breaks down glucose into carbon dioxide and water while releasing ATP. The breakdown of molecules to generate usable energy is characteristic of catabolic processes, not anabolic ones.
Correct Answer is C
Explanation
A. G1 (gap 1):During G1, the cell grows and performs normal metabolic activities. Organelles are duplicated, but DNA replication does not occur in this phase.
B. G2 (gap 2):G2 follows DNA synthesis and involves further cell growth and preparation for mitosis, including the production of proteins needed for cell division. DNA replication has already been completed by this point.
C. S (synthesis):The S phase is dedicated to DNA replication. Each chromosome is duplicated to ensure that the resulting daughter cells receive an identical copy of the genetic material.
D. metaphase:Metaphase is a stage of mitosis, not interphase. During metaphase, replicated chromosomes align at the cell’s equatorial plane in preparation for separation.
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