can help right now Ryan K. 12. Through how many membranes would a molecule have

Question

can help right now Ryan K. 12. Through how many membranes would a molecule have to pass in going directly from: (3 pt s) A. the interior of the central vacuole to the cytoplasm B. the stroma of a chloroplast to the lumen of the SER C. matrix of the mitochondria to the outside of a cell D. the lumen of the lysosome to the outside of the cell E. the cystolic surface of the Golgi to the surface of a microtubule Questions 13-16 refer to the following This figure represents an experiment in which specific cells were incubated with radioactive, and traceable isotopes of amino acids for a brief period to establish a population of labeled proteins. Any labeled amino acids that were not incorporated into a protein were removed after 3 minutes. The dependent variable is, in effect, the amount of radioactivity detected in three cellular locations. Figure 1: rs Rough ER iolgi esicles Seerctory Vesicles 03 10 20 30 13. This type of experiment that allows for the labeling and suhsequent tracking of population of molecules is called a: experiment. (1pt) 14. In the graph below, draw the results you would expect if you tracked a Golgi-resident protein. Clearly draw the Rough ER data as a solid dark line, the Golgi data as a dashed line and the secretory vesicles as a dotted line, just as in the figure above. (2 Time af Chase imamites)

Explanation / Answer

12.

A. One.

The molecule has to cross the membrane of vacoule only.

B. Three.

Molecule has to cross 2 membranes of chloroplasts and one membrane of SER.

C. Two.

Molecule has to cross two membranes of mitochondria.

D. Two.

Molecule has to cross membrane of lysosome and cell membrane.

E. None.

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