Cells involved in the contractions of the heart are called
A. skeletal muscle cells.
B. cardiac muscle cells.
C. smooth muscle cells.
D. fibroblasts.
E. chondrocyte cells.
B. cardiac muscle cells.
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Which statement most aptly describes the body of a fungus?
A. Tiny threadlike septa collectively make up the mycelium. B. Tiny threadlike mycelia collectively make up the septa. C. Tiny threadlike mycelia collectively make up the hypha. D. Tiny threadlike hyphae collectively make up the mycelium. E. Tiny threadlike mycelia collectively make up the dikaryote.
Rods and cones are located in the ____
a. lens b. cornea c. pupil d. iris e. retina
Which of the following structures allows a bacterium to propel itself through its environment?
a. microfilaments
b. intermediate filaments
c. microvillus
d. flagellum
e. microtubule
Which of the following is not required for T cell activation?
A) involvement of CD4 or CD8 B) bound antigen C) MHC I or II D) antibody E) co-stimulatory proteins