________ are found on all nucleated cells and can signal viral infection
a. MHC I
b. MHC II
c. Both MHC I and MHC II
d. Antigens
Answer: A
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Cells called ____ are a type of vascular tissue that join end to end in tubelike columns. They develop
thick, lignified cell walls and die at maturity, leaving a water-conducting tube. At maturity the ends of the cells are open or have large openings, allowing for enhanced water flow compared to other types of vascular tissue.
a. sclerenchyma b. tracheids c. collenchyma d. parenchyma e. vessel members
In systematics, a group of organisms consisting of a common ancestor and some, but not all, of its descendents is defined as a
A. None of the answer choices is correct. B. clade. C. polyphyletic group. D. cladogram. E. paraphyletic group.
Freely movable joints are ______ joints.
a) bony b) catilaginous c) synovial d) elastic e) fibrous
Amphotericin B, nystatin, and the imidazoles are all
A. fungal enzymes. B. antifungal drugs. C. culture media supplements for fungi. D. mycotoxins. E. None of the choices are correct.