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CH. 11 BIo

Sean

QuestionAnswer
What is a difference between embryonic and adult stem cells? Embryonic stem cells are undifferentiated; adult stem cells are partially differentiated.
How is it that the cells in different body tissues are able to perform different functions? The cells exhibit different patterns of gene expression
You are now made of many cells; some of these cells function as liver cells, some as muscle cells, some as red blood cells, while others play different roles. What name is given to the process that is responsible for this? cellular differentiation
What is the first level of control of eukaryotic gene transcription? DNA packing and unpacking
The process by which genotype becomes expressed as phenotype is ______. gene expression
Bacterial RNA polymerase binds to the ______. promoter
While examining a human cell that functions normally, you determine that it has 45 functional chromosomes and one chromosome that is almost completely inactive. You immediately decide that it is very likely that this cell ______ came from a normal human female
The "master control genes" that regulate other genes, which determine what body parts will develop in which locations, are called ______. homeotic genes
Cells communicate with one another via ______. signal transduction pathways
What name is given to a gene that causes cancer? oncogene
Repressors act by blocking the binding of _____ to the operator. : RNA polymerase
In an operon, the ______ acts as an on/off switch operator
Introns are ______ noncoding DNA sequences
How can a single RNA transcript be translated into different polypeptides? There is more than one way to splice an RNA transcript.
More people die of ______ cancer than of any other cancer. lung
Which of the following turns off transcription by binding to the operator? repressor
Homeotic genes ______. are evidence of the common ancestry of eukaryotic organisms
______ is(are) responsible for more cancers than any other carcinogen. Tobacco
Many proto-oncogenes regulate ______. cell division
In eukaryotic cells, repressor proteins inhibit transcription by binding to ______. silencers
Possible uses of reproductive cloning include ______. A. the production of genetically identical animals for experimentation B. restocking populations of endangered animals C. the production of organs in pigs for transplant into humans D. all of the above.
Which of these is most likely to cause the development of a six-legged frog? mutation of homeotic genes
In bacteria, what name is given to a cluster of genes with related functions, along with their DNA control sequences? operon
Which of these lifestyle choices will increase cancer risk? a diet low in plant fiber
Which of these plays a role in the regulation of transcription in both prokaryotic and eukaryotic cells? attachment of RNA polymerase to the promoter
Created by: Addiejo
 

 



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