0071509674.pdf

(coco) #1

Cell Biology:


Cytoplasm


Questions


DIRECTIONS: Each item below contains a question or incomplete
statement followed by suggested responses. Select the one bestresponse to
each question.

37.A patient is diagnosed with a pleomorphic adenoma of the sub-
mandibular gland. The pathologist uses anti-vimentin antibodies with
immunocytochemistry to stain the biopsy tissue. One would expect to find
vimentin staining in which of the following structures?
a. Fibrous stromal connective tissue
b. Parasympathetic ganglia
c. Serous acini
d. Mucous acini
e. Striated ducts

38.Which of the following is the function of the large subunit of the
ribosome?
a. Bind messenger RNA (mRNA)
b. Bind transfer RNA (tRNA)
c. Catalyze peptide bond formation
d. Link adjacent ribosomes in a polyribosome
e. Initiate protein synthesis

39.The stability and arrangement of actin filaments as well as their prop-
erties and functions depend on which of the following?
a. The structure of the actin filaments
b. Microtubules
c. Intermediate filament proteins
d. Actin-binding proteins
e. Motor molecules, such as kinesin

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