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Biology 161 mastering biology @ msu
Terms in this set (12)
Beginning within the nucleus, the first step leading to the synthesis of a polypeptide is _____.
transferring of information from DNA to messenger RNA
Which organelle plays a role in intracellular digestion?
Where are proteins secreted from the cell most likely to be found?
Proteins that will be secreted from the cell are likely to be found in closed spaces bounded by membranes of the endomembrane system.
Which molecules do not normally cross the nuclear membrane?
What is the nuclear envelope composed of?
two lipid bilayers
What are nuclear pores made up of?
a group of proteins that are collectively called the nuclear pore complex.
How do molecules pass into and out of the nucleus?
True or false? Large proteins containing a nuclear localization signal (NLS) bind to the nuclear pore and enter the nucleus without any expenditure of energy.
A small protein is injected into a cell and observed in the nucleus a short time later. What type of transport has taken place?
In experiments to test whether a protein can enter the nucleus, why would proteins be labeled with fluorescent molecules?
To make the proteins easy to see
Name 3 cell structures found only in plant cells
chloroplast, cellulose cell wall, central vacuole
Name a cell structure found only in animal cells
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