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Use the Following Information When Answering the Corresponding Questions)

question 29

Multiple Choice

Use the following information when answering the corresponding questions) .
The mechanism of cell crawling in protist species is not well defined. The textbook states that pseudopodia extension involves interactions between actin and myosin the same molecules that are involved in mammalian muscle contraction) . However, p the study described below, no one had provided convincing data that actin and myosin were actually involved in cell crawlin protists. Anatomical studies had identified the cytoskeletal protein actin just below the surface of the cell membrane in severa of protist, but physiological studies had failed to show a functional link between actin, myosin, and cell crawling.
In a study by N. Poulsen et al. Diatom gliding is the result of an actin- myosin motility system, Cell Motility and the Cytoskeleto 1999) :23- 22) , researchers tested whether motility in a particular species of diatom involves interactions between actin and myosin.
Figure 27.3
-The data graphed in Figure 27.3 could be an artifact if latrunculin A kills this species of diatoms i.e., that may be why the cells are not moving) . Which of the following would be the best evidence that latrunculin A is not killing the cells?

Definitions:

Realizable

Refers to assets that can be easily converted into cash or are expected to be sold without significant delay or loss in value.

Modified Accrual Accounting

An accounting method that recognizes revenues when they become available and measurable and expenses when they are incurred, used often by government entities.

Revenue Recognition

An accounting principle that determines the specific conditions under which income becomes realized or realizable, and thus recognized as revenue.