Cells found associated with connective tissue proper that ingest foreign substances, microorganisms, and dead and damaged cells are:
A) phagocytes. B) fibroblasts. C) mast cells. D) adipocytes.
Answer: A
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Some dogs may have ________________ that grows within the ear canal
Fill in the blank(s) with correct word
Why are neurons unable to undergo mitosis in adults?
A. Mature neurons lack centrioles. B. Neurons lack mitochondria. C. Mature neurons lack a nucleus. D. Mature neurons lack chromatophilic substance. E. Mature neurons lack adequate supplies of cytoplasm for cell division.
A high-energy bond in ATP is present between
A) adenine and ribose. B) adenine and a phosphate group. C) the first and second phosphate group. D) the second and third phosphate group. E) the first and second, and the second and third phosphate groups.
The process by which antibodies bind to specific sites on bacterial exotoxins (toxic chemicals secreted by bacteria) to block their harmful effects is called ________
A) agglutination B) chemotaxis C) complement fixation D) neutralization E) precipitation