ch 11 - control of gene expression - worksheet - class

ch 11 - control of gene expression - worksheet - class -...

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Worksheet for Chapter 11 – Control of Gene Expression 1. ___ is the turning off and on of genes. 2. What does the term “gene expression” mean? 3. In prokaryotes, a ___ is a cluster of genes with related functions. It includes ___, ____, and ____. 4. The ___ is the start sequence where the RNA polymerase binds. 5. The ___ is the switch (on/off) for the binding of RNA polymerase to the DNA molecule. 6. To stop gene expression, a ___ binds to the ___ (switch), stopping ____. 7. A ___ gene, located ___, codes for the repressor. 8. How does the lac operon work? 9. How does the trp operon work? 10. What is cellular differentiation? 11. Differentiated cells have ___ (more/less/the same number of) genes as undifferentiated cells. 12. A carrot root cell can give rise to an entire carrot plant and a salamander can regrow its leg. These examples demonstrate what? 13. ____ allows very long chromosome strands to fit into cells. 14. In DNA packing, ___ winds around clusters of ___, forming a string of bead-like ___.
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ch 11 - control of gene expression - worksheet - class -...

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