Which of the three cytoskeletal fibers contribute to the structural integrity and strength of epithelial tissues in animals?
A. intermediate filaments and microfilaments
B. intermediate filaments and microtubules
C. microtubules and microfilaments
A
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How do cells use the ATP cycle shown in the figure?
A) Cells use the cycle to recycle ADP and phosphate. B) Cells use the cycle to recycle energy released by ATP hydrolysis. C) Cells use the cycle to recycle ADP, phosphate, and the energy released by ATP hydrolysis. D) Cells use the cycle to generate or consume water molecules as needed. E) Cells use the cycle primarily to generate heat.
An epithelial tissue formed by more than one layer of cells and with column-like cells at the surface is called
a. simple squamous. b. stratified squamous. c. simple columnar. d. stratified columnar.
The genome of most plant viruses consists of what kind of RNA?
a. rRNA b. mRNA c. ssRNA d. dsRNA e. SRP RNA
Similar genera are grouped into a(n)
A.) family B.) class C.) phylum D.) order